Alismatidae: A plant subclass of the class Liliopsida (monocotyledons) in the Chronquist classification system. This is equivalent to the Alismatales order in the APG classification system. It is a primitive group of more or less aquatic plants.East Timor: A country in Southeastern Asia, northwest of Australia in the Lesser Sunda Islands at the eastern end of the Indonesian archipelago. It includes the eastern half of the island of Timor, the Oecussi (Ambeno) region on the northwest portion of the island of Timor, and the islands of Pulau Atauro and Pulau Jaco. On May 20, 2002, East Timor was internationally recognized as an independent state. This followed its declared independence from Portugal on November 20, 1975 and a period of armed conflict with Indonesia.Equilibrative Nucleoside Transport Proteins: A class of sodium-independent nucleoside transporters that mediate the facilitative transport of NUCLEOSIDES.Angiosperms: Members of the group of vascular plants which bear flowers. They are differentiated from GYMNOSPERMS by their production of seeds within a closed chamber (OVARY, PLANT). The Angiosperms division is composed of two classes, the monocotyledons (Liliopsida) and dicotyledons (Magnoliopsida). Angiosperms represent approximately 80% of all known living plants.Euthanasia, Passive: Failing to prevent death from natural causes, for reasons of mercy by the withdrawal or withholding of life-prolonging treatment.Plants, Genetically Modified: PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.Equilibrative Nucleoside Transporter 1: A subtype of equilibrative nucleoside transporter proteins that is sensitive to inhibition by 4-nitrobenzylthioinosine.History, 20th Century: Time period from 1901 through 2000 of the common era.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)EncyclopediasDictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Gymnosperms: Gymnosperms are a group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit), in contrast to ANGIOSPERMS whose seeds are surrounded by an ovary wall. The seeds of many gymnosperms (literally, "naked seed") are borne in cones and are not visible. Taxonomists now recognize four distinct divisions of extant gymnospermous plants (CONIFEROPHYTA; CYCADOPHYTA; GINKGOPHYTA; and GNETOPHYTA).Molecular Sequence Annotation: The addition of descriptive information about the function or structure of a molecular sequence to its MOLECULAR SEQUENCE DATA record.ArizonaProstheses and Implants: Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.Birds: Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.Plant Leaves: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)MedlinePlus: NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.Color: The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.Tradescantia: A plant genus of the family COMMELINACEAE that is used in genotoxic bioassays.Commelinaceae: A plant family of the order Commelinales, subclass Commelinidae, class Liliopsida (monocotyledons) that are often somewhat succulent. The leaves are alternate, simple, parallel-veined, and usually with a closed sheathing base. The flowers are often in cymes and have 3 petals and 3 sepals.Botany: The study of the origin, structure, development, growth, function, genetics, and reproduction of plants.Clusia: A plant genus of the family CLUSIACEAE. Members contain benzophenones.Beijerinckiaceae: A family of aerobic gram-negative rods that are nitrogen fixers. They are highly viscous, and appear as a semitransparent slime in giant colonies.DNA, Chloroplast: Deoxyribonucleic acid that makes up the genetic material of CHLOROPLASTS.Plant Weeds: A plant growing in a location where it is not wanted, often competing with cultivated plants.MuseumsInterlibrary LoansAlaskaLibraries, MedicalAnimal Feed: Foodstuff used especially for domestic and laboratory animals, or livestock.Laburnum: A plant genus of the family FABACEAE named after the drooping clusters of flowers.National Library of Medicine (U.S.): An agency of the NATIONAL INSTITUTES OF HEALTH concerned with overall planning, promoting, and administering programs pertaining to advancement of medical and related sciences. Major activities of this institute include the collection, dissemination, and exchange of information important to the progress of medicine and health, research in medical informatics and support for medical library development.Inflorescence: A cluster of FLOWERS (as opposed to a solitary flower) arranged on a main stem of a plant.Meristem: A group of plant cells that are capable of dividing infinitely and whose main function is the production of new growth at the growing tip of a root or stem. (From Concise Dictionary of Biology, 1990)Biological Science Disciplines: All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.Flowers: The reproductive organs of plants.Flowering Tops: Tops of plants when in flower, including the stems, leaves and blooms.Plant Stems: Parts of plants that usually grow vertically upwards towards the light and support the leaves, buds, and reproductive structures. (From Concise Dictionary of Biology, 1990)Zingiberaceae: A plant family of the order Zingiberales, subclass Zingiberidae, class Liliopsida. It includes plants which have both flavoring and medicinal properties such as GINGER; turmeric (CURCUMA), and cardamom (ELETTARIA).Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Curcuma: A plant genus of the family ZINGIBERACEAE that contains CURCUMIN and curcuminoids.Zingiberales: This plant order includes 8 families, 66 genera, and about 1,800 species. These herbaceous perennials are mainly found in the wet tropics. Members include the banana family (MUSACEAE) and GINGER family (ZINGIBERACEAE).Alpinia: A plant genus of the family ZINGIBERACEAE. Members contain galangin, yakuchinone-A, and diarylheptanoids.Ginger: Deciduous plant rich in volatile oil (OILS, VOLATILE). It is used as a flavoring agent and has many other uses both internally and topically.Araceae: A plant family of the order Arales, subclass Arecidae, class Liliopsida (monocot). Many members contain OXALIC ACID and calcium oxalate (OXALATES).PortugalFossils: Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.Oleaceae: A plant family of the order Lamiales. The leaves are usually opposite and the flowers usually have four sepals, four petals, two stamens, and two fused carpels that form a single superior ovary.Pollen: The fertilizing element of plants that contains the male GAMETOPHYTES.

Posidonia oceanica meadow: a low nutrient high chlorophyll (LNHC) system? (1/38)

BACKGROUND: In spite of very low nutrient concentrations in its vicinity - both column and pore waters-, the Posidonia oceanica of the Revellata Bay displays high biomass and productivity. We measured the nutrient fluxes from the sediment into the water enclosed among the leaf shoots ("canopy water") to determine if it is possible source of nutrients for P. oceanica leaves. RESULTS: During the summer, the canopy water appears to act as a nutrient reservoir for the plant. During that period, the canopy water layer displays both a temperature 0.5 degrees C cooler than the upper water column, and a much higher nutrient content, as shown in this work using a very simple original technique permitting to sample water with a minimal disturbance of the water column's vertical structure. Despite low nutrient concentrations in pore water, mean net fluxes were measured from the sediment to the canopy water. These fluxes are sufficient to provide 20% of the mean daily nitrogen and phosphorus requirement of the P. oceanica shoots. CONCLUSION: An internal cycling of nutrients from P. oceanica senescent leaves was previously noted as an efficient strategy to help face low nutrient availability. The present study points out a second strategy which consists in holding back, in the canopy, the nutrients released at the water-sediment interface. This process occurs when long leaves, during poor nutrient periods in the water column, providing, to P. oceanica, the possibility to develop, high biomass, high chlorophyll quantities in low nutrient environment (a Low Nutrients High Chlorophyll system).  (+info)

Occurrence of sulfated galactans in marine angiosperms: evolutionary implications. (2/38)

We report for the first time that marine angiosperms (seagrasses) possess sulfated polysaccharides, which are absent in terrestrial and freshwater plants. The structure of the sulfated polysaccharide from the seagrass Ruppia maritima was determined. It is a sulfated D-galactan composed of the following regular tetrasaccharide repeating unit: [3-beta-D-Gal-2(OSO3)-1-->4-alpha-D-Gal-1-->4-alpha-D-Gal-1-->3-beta-D-Gal-4(OSO3 )-1-->]. Sulfated galactans have been described previously in red algae and in marine invertebrates (ascidians and sea urchins). The sulfated galactan from the marine angiosperm has an intermediate structure when compared with the polysaccharides from these two other groups of organisms. Like marine invertebrate galactan, it expresses a regular repeating unit with a homogenous sulfation pattern. However, seagrass galactan contains the D-enantiomer of galactose instead of the L-isomer found in marine invertebrates. Like red algae, the marine angiosperm polysaccharide contains both alpha and beta units of D-galactose; however, these units are not distributed in an alternating order, as in algal galactan. Sulfated galactan is localized in the plant cell walls, mostly in rhizomes and roots, indicative of a relationship with the absorption of nutrients and of a possible structural function. The occurrence of sulfated galactans in marine organisms may be the result of physiological adaptations, which are not correlated with phylogenetic proximity. We suggest that convergent adaptation, due to environment pressure, may explain the occurrence of sulfated galactans in many marine organisms.  (+info)

Assessing genetic diversity in clonal organisms: low diversity or low resolution? Combining power and cost efficiency in selecting markers. (3/38)

The increasing use of molecular tools to study populations of clonal organisms leads us to question whether the low polymorphism found in many studies reflects limited genetic diversity in populations or the limitations of the markers used. Here we used microsatellite datasets for two sea grass species to provide a combinatory statistic, combined with a likelihood approach to estimate the probability of identical multilocus genotypes (MLGs) to be shared by distinct individuals, in order to ascertain the efficiency of the markers used and to optimize cost-efficiently the choice of markers to use for deriving unbiased estimates of genetic diversity. These results strongly indicate that conclusions from studies on clonal organisms derived using markers showing low polymorphism, including microsatellites, should be reassessed using appropriate polymorphic markers.  (+info)

An accurate fluorescent assay for quantifying the extent of RNA editing. (4/38)

Recent data suggest that small differences in editing efficiency can have significant functional consequences. Here we present a fluorescent poisoned primer extension assay that is capable of distinguishing editing efficiency differences as low as 5%. For a poison-primer extension assay to be accurate, the extension product must stop at the intended base. Sometimes, however, it runs beyond. We tested the effect of specific enzyme-terminator combinations on the amount of run through. In the worst cases it accounted for 70% of the total signal, and in the best cases <5%. In addition, the specific base can affect run through, with G producing the least. The accuracy of the assay was demonstrated on templates derived from mixed plasmids and then verified on two biological substrates. Using either a K(+) channel mRNA that contains a site for adenosine deamination or an ndhB mRNA that contains a site for cytidine deamination, the editing efficiency predicted by the assay closely matched that predicted by bulk sequencing of individual cDNA clones. This assay should prove useful for analyzing small changes in editing efficiency or for quantifying single nucleotide polymorphisms.  (+info)

Trace metal concentrations in Posidonia oceanica of North Corsica (northwestern Mediterranean Sea): use as a biological monitor? (5/38)

BACKGROUND: Within semi-closed areas like the Mediterranean Sea, anthropic wastes tend to concentrate in the environment. Metals, in particular, are known to persist in the environment and can affect human health due to accumulation in the food chain. The seagrass Posidonia oceanica, widely found in Mediterranean coastal waters, has been chosen as a "sentinel" to quantify the distribution of such pollutants within the marine environment. Using a technique similar to dendrochronology in trees, it can act as an indicator of pollutant levels over a timeframe of several months to years. In the present study, we measured and compared the levels of eight trace metals (Cr, Ni, Cu, Zn, As, Se, Cd, and Pb) in sheaths dated by lepidochronology and in leaves of shoots sampled from P. oceanica meadows collected from six offshore sites in northern Corsica between 1988 and 2004; in the aim to determine 1) the spatial and 2) temporal variations of these metals in these areas and 3) to compared these two types of tissues. RESULTS: We found low trace metal concentrations with no increase over the last decade, confirming the potential use of Corsican seagrass beds as reference sites for the Mediterranean Sea. Temporal trends of trace metal concentrations in sheaths were not significant for Cr, Ni, Cu, As or Se, but Zn, Cd, and Pb levels decreased, probably due to the reduced anthropic use of these metals. Similar temporal trends between Cu levels in leaves (living tissue) and in sheaths (dead tissue) demonstrated that lepidochronology linked with Cu monitoring is effective for surveying the temporal variability of this metal. CONCLUSION: Leaves of P. oceanica can give an indication of the metal concentration in the environment over a short time period (months) with good accuracy. On the contrary, sheaths, which gave an indication of changes over long time periods (decades), seem to be less sensitive to variations in the metal concentration in the environment. Changes in human consumption of metals (e.g., the reduction of Pb in fuel) are clearly reflected in both organs. These results confirm that P. oceanica is a good bioindicator of metals and a good biomonitor species for assessing Cu in the environment.  (+info)

Flower-like terminal structures in racemose inflorescences: a tool in morphogenetic and evolutionary research. (6/38)

Terminal flower-like structures (TFLS) occur in many angiosperms that possess indeterminate inflorescences such as spikes, racemes, or spadices. We describe and review TFLS in early-divergent angiosperms, especially the magnoliid order Piperales and the monocot order Alismatales, in which floral interpretation is controversial. Essentially similar TFLS occur in a wide range of taxa. Among magnoliids, they occur in some Piperales (Saururaceae and a few Piperaceae), but are absent from Chloranthaceae. Among monocots, they occur in some early-divergent families such as Acoraceae, Aponogetonaceae, Juncaginaceae, Potamogetonaceae, and Ruppiaceae. Similar TFLS with obscure organ identity are recorded in mutants of Arabidopsis. TFLS can often be interpreted as pseudanthia (close aggregations of reduced flowers), but in some cases the entire terminal pseudanthium is very similar to a true flower. In some cases, elaborated TFLS could therefore have given rise to what are normally termed 'true' (i.e. euanthial) flowers. Data presented here on terminal pseudanthia in Potamogeton and Ruppia support a pseudanthial evolutionary origin of reproductive units in the alismatid families Zannichelliaceae and Cymodoceaceae. Furthermore, in some alismatid species, either the entire inflorescence apex or an individual primordium at or near the inflorescence tip can be transformed into a filamentous or tubular (or intermediate) structure. A tubular structure enclosing stamens and carpels is described in Piper. This indicates that pseudanthium formation can provoke morphological novelties, perhaps due to new patterns of overlap between expression zones of regulatory genes and/or new spatial constraints.  (+info)

Spectrum of genetic diversity and networks of clonal organisms. (7/38)

Clonal reproduction characterizes a wide range of species including clonal plants in terrestrial and aquatic ecosystems, and clonal microbes such as bacteria and parasitic protozoa, with a key role in human health and ecosystem processes. Clonal organisms present a particular challenge in population genetics because, in addition to the possible existence of replicates of the same genotype in a given sample, some of the hypotheses and concepts underlying classical population genetics models are irreconcilable with clonality. The genetic structure and diversity of clonal populations were examined using a combination of new tools to analyse microsatellite data in the marine angiosperm Posidonia oceanica. These tools were based on examination of the frequency distribution of the genetic distance among ramets, termed the spectrum of genetic diversity (GDS), and of networks built on the basis of pairwise genetic distances among genets. Clonal growth and outcrossing are apparently dominant processes, whereas selfing and somatic mutations appear to be marginal, and the contribution of immigration seems to play a small role in adding genetic diversity to populations. The properties and topology of networks based on genetic distances showed a 'small-world' topology, characterized by a high degree of connectivity among nodes, and a substantial amount of substructure, revealing organization in subfamilies of closely related individuals. The combination of GDS and network tools proposed here helped in dissecting the influence of various evolutionary processes in shaping the intra-population genetic structure of the clonal organism investigated; these therefore represent promising analytical tools in population genetics.  (+info)

Phenols content and 2-D electrophoresis protein pattern: a promising tool to monitor Posidonia meadows health state. (8/38)

BACKGROUND: The endemic seagrass Posidonia oceanica (L.) Delile colonizes soft bottoms producing highly productive meadows that play a crucial role in coastal ecosystems dynamics. Human activities and natural events are responsible for a widespread meadows regression; to date the identification of "diagnostic" tools to monitor conservation status is a critical issue. In this study the feasibility of a novel tool to evaluate ecological impacts on Posidonia meadows has been tested. Quantification of a putative stress indicator, i.e. phenols content, has been coupled to 2-D electrophoretic protein analysis of rhizome samples. RESULTS: The overall expression pattern from Posidonia rhizome was determined using a preliminary proteomic approach, 437 protein spots were characterized by pI and molecular weight. We found that protein expression differs in samples belonging to sites with high or low phenols: 22 unique protein spots are peculiar of "low phenols" and 27 other spots characterize "high phenols" samples. CONCLUSION: Posidonia showed phenols variations within the meadow, that probably reflect the heterogeneity of environmental pressures. In addition, comparison of the 2-D electrophoresis patterns allowed to highlight qualitative protein expression differences in response to these pressures. These differences may account for changes in metabolic/physiological pathways as adaptation to stress. A combined approach, based on phenols content determination and 2-D electrophoresis protein pattern, seems a promising tool to monitor Posidonia meadows health state.  (+info)

When you have the scientific name of a plant, you should easily find information on it with internet search engines, such as google.com. Posidonia oceanica or neptunegrass is a type of seagrass. It is an important native flowering plant forming vast underwater meadows in the Mediterranean Sea. It provides habitat, oxygen, and food for many other organisms. It can grow at a water depth of up to 40 meters. It is endangered by pollution, construction, drag netting, and an introduced algae, Caulerpa taxifolia. Neptunegrass has rhizomes, roots, ribbonlike leaves up to 1.5 meters long, and ball-like fruit. Its fruit and leaves often wash up on beaches. The fruit have air spaces allowing them to float. References Natural habitat (Posidonia oceanica L. Del.) Neptunegrass (Posidonia oceanica) Posidonia oceanica Simulation Posidonia oceanica photo Posidonia oceanica fruit "balls" ...
With this aim, the density of Paracentrotus lividus was estimated at six different locations around the Gulf of Alghero (Northwestern Sardinia, Italy). At each location, two areas were considered and within each area the number of P. lividus individuals was counted in 10 plots of dimensions 1 × 1 m each. The abundance of P. lividus and Sarpa salpa grazing marks was estimated on two shoots harvested at random in each plot. The number of P. lividus individuals varied greatly among the locations and between areas within each location. A sigmoid function was found to better describe the relation between P. lividus density and the number of its grazing marks. The distance class-frequency distribution of P. lividus grazing marks from the leaf base showed that this herbivore affected the length of the Posidonia oceanica leaf for about 700 mm, and that the attacks were concentrated at the lower portion of the leaf near the base. Conversely, a larger number of the S. salpa grazing bites were more ...
The increasing use of molecular tools to study populations of clonal organisms leads us to question whether the low polymorphism found in many studies reflects limited genetic diversity in populations or the limitations of the markers used. Here we used microsatellite datasets for two sea grass species to provide a combinatory statistic, combined with a likelihood approach to estimate the probability of identical multilocus genotypes (MLGs) to be shared by distinct individuals, in order to ascertain the efficiency of the markers used and to optimize cost-efficiently the choice of markers to use for deriving unbiased estimates of genetic diversity. These results strongly indicate that conclusions from studies on clonal organisms derived using markers showing low polymorphism, including microsatellites, should be reassessed using appropriate polymorphic markers.
Poster (2009, November 27). Posidonia oceanica is a seagrass endemic to the Mediterranean Sea, and is able to form large monospecific areas, called meadows. These meadows are critical features of the Mediterranean coastal zones, and ... [more ▼]. Posidonia oceanica is a seagrass endemic to the Mediterranean Sea, and is able to form large monospecific areas, called meadows. These meadows are critical features of the Mediterranean coastal zones, and are of great ecologic and economic importance. Posidonia oceanica meadows shelter high biomasses and biodiversities of amphipod crustaceans. In other temperate meadows, such as Atlantic Zostera marina meadows, the amphipods play an important part in the functioning of the ecosystem, notably in organic matter transfers from producers to higher level consumers. However, the situation in Posidonia oceanica meadows remains unclear, due to the lack of precise studies, and little is known about the trophic ecology of amphipods. In this context, our ...
Temporal variability in species composition and abundance may enhance coexistence in ecological communities, especially when subjected to strong seasonal patterns. Species distribution through time may be related to many factors, such as changes in the structure and functioning of preferred habitats, variations in ecological interactions or asynchronous patterns in species life cycles. Here, data from a one-year survey of amphipod assemblages from a nearly undisturbed Posidonia oceanica meadow are used to investigate the seasonal patterns in species abundance and identity. Our results highlight the presence of a core group of species inhabiting the meadow throughout the year, although an in depth analysis reveals three differentiated seasonal assemblages corresponding to autumn, winter, and a warm season clustering of both spring and summer. The observed patterns suggest the interplay between different mechanisms drives the coexistence of amphipods over the whole year, including niche partitioning,
Poster (2012, August 20). In the Mediterranean Sea, Posidonia oceanica meadows produce a huge amount of detritus, evaluated up to 300 to 2000 g dry wt m-2 yr-1. This litter is mainly composed of dead leaves but also of uprooted P ... [more ▼]. In the Mediterranean Sea, Posidonia oceanica meadows produce a huge amount of detritus, evaluated up to 300 to 2000 g dry wt m-2 yr-1. This litter is mainly composed of dead leaves but also of uprooted P.oceanica shoots and drift macro-algae from adjacent rocky bottoms. Although rich in refractory materials (lignin) and poor in P and N, these underwater accumulations of leaves are colonised by fungi, micro-algae (like diatoms), bacteria, but also by micro and macrofauna assemblages. These organisms could play an important role in leaf litter degradation and enrichment, but also in energy and carbon transfer from P.oceanica to higher trophic levels in adjacent coastal ecosystems. In this study we focus on the vagile macro-fauna (invertebrates with a size ...
Seagrass are among the most important natural carbon sinks on Earth with Posidonia oceanica (Mediterranean Sea) considered as the most relevant species. Yet, the number of direct measurements of organic carbon burial rates in P. oceanica is still scarce and the effect of local environmental factors remains largely unexplored. In addition, P. oceanica meadows are declining due to the increase in anthropogenic pressure in coastal areas during the last century. The aim of this study is to assess the recent carbon sink capacity of P. oceanica and particularly the effect of human pressure and two environmental factors, water depth and exposure to wave energy (based on a fetch index), on the carbon burial rate since 1900. We conducted an extensive survey of sediment cores in meadows distributed across a gradient of depth, fetch, and human pressure around The Balearic Islands. Sediment and carbon accumulation rates were obtained from 210Pb concentrations profiles. Top-30 centimeters carbon stocks (6.1 ...
In this study, we investigated Cd, Cr, Cu, Pb, and Zn in the seagrass Posidonia oceanica (L.) Delile leaves and in the brown algae Cystoseira sp. sampled along a 280-km transect in the Tyrrhenian Sea, from the Ustica to Linosa Islands (Sicily, Italy) with the aim to determine their control charts (baseline levels). By applying the Johnsons (Biometrika 36:149-175, 1949) probabilistic method, we de ...
Araceae are herbs with leaves that are usually divided into a petiole and expanded blade. They have a distinctive inflorescence of a more or less petal-like spathe plus a spadix made up of densely-packed, sessile, ebracteate flowers - in many taxa the spadix has a large, terminal, sterile part. The fruit is a berry. Evolution: Divergence & Distribution. Mayoa pollen grains that look very like those of Monsteroideae have been found in Early Cretaceous deposits of the late Barremian-early Aptian of some 120-110 Ma in Portugal (Friis et al. 2004; see also Hesse & Zetter 2007). Although the identity of some of these grains has been questioned (Hoffmann & Zetter 2010), macrofossils apparently of staminate flowers belonging to Aroideae (a decidedly non-basal clade) have been discovered in slightly younger deposits ca 112 Ma and also in Portugal (Friis et al. 2010: c.f. pollen; Friis et al. 2011; Isles et al. 2015). Thus the fossil record would suggest that all eight subfamilies of Araceae may have ...
The sole species of Butomaceae (the flowering rush family) is the aquatic Eurasian plant Butomus umbellatus, which is listed as moderately invasive in New York. Its first appearance in North America was in the St. Laurence River in 1897, and it is now a problem weed in the Great Lakes.[1]. Studies by L. C. Anderson in 1974 found that the naturalized North American Butomus populations had separate sources. Those east of Niagara Falls, introduced near the St. Lawernce River, originated in eastern Asia. Those west of the Falls were introduced near Detroit, and were from western Euraasia. R. L. Stuckey, in 1994, recognized these two groups as separate species, with B. umbellatus, from western Eurasia, found west of the Falls, and B. junceus, from eastern Asia, found east of the falls.[2] B. junceus is not widely accepted as a separate species at this time, but if it were to be accepted, New Yorks populations would probably be considered to be B. junceus.[3][4]. ...
Posidonia oceanica (Neptune grass) grows at depths varying from 5 to 40-50meters, depending on water clarity. It is endemic to the Mediterranean Sea and forms extensive underwater meadows which can be considered as the Mediterranean underwater equivalent of the tropical forests in land. It sustains a large variety of commercially important species. Both the meadows & the dead leaves of P. oceanica that one can find in the shore are protecting the coastline against erosion. It is particularly sensitive to organic pollution and to bottom trawling. Τhe protection and conservation of P. oceanica habitat is a top priority (EU Habitat Directive 92/43) and everyones responsibility. ...
The Poaceae (cried Gramineae or true grasses an aw) is a lairge an nearly ubiquitous faimily o monocotyledonous flouerin plants. Wi mair nor 10,000 domesticatit an wild species, the Poaceae represents the fift-lairgest plant faimily, follaein the Orchidaceae, Asteraceae, Fabaceae, an Rubiaceae.[2] Tho commonly cried "gresses", seagresses, rashes, an segs faw ootside this faimily. The rashes an segs is sib tae the Poaceae, bein members o the order Poales, but the seagresses is members o order Alismatales. Gresslands is estimated tae compone 20% o the vegetation kiver o the Yird. Poaceae leeves in mony ither habitats, includin weetlands, wids, an tundra. Domestication o poaceous cereal craps sic as maize (corn), wheat, rice, baurley, an millet lies at the foondation o sedentary leevin an ceevilization aroond the warld, an the Poaceae still constitutes the maist economically important plant faimily in modren times, providin forage, biggin materials (bamboo, thack) an fuel (ethanol), as weel as ...
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2 Dokuz Eylül University, Faculty of Sciences, Department of Chemistry, Division of Biochemistry, Kaynaklar Campus, İzmir, Turkey DOI : 10.4194/1303-2712-v17_6_50 Viewed : 262 - Downloaded : 217 Importance of the artificial intelligence in the chemical processes has been increased in the recent studies. Although biosorption is widely studied topic in chemistry, modelling of biosorption data is based on very old equations. However, use of artificial intelligence in the biosorption based studies can give important clues to researchers. For this purpose, the biosorption of tetracycline by using Posidonia oceanica from the Mediterranean Sea was studied in this study. According to classical evaluation, the data were well in line with pseudo-second order kinetic and Langmuirs isotherm. In the artificial neural network modelling, the best back propagation algorithm, optimum number of hidden neuron and optimum training:validation:testing ratio were found as Bayesian Regulation, 16 and 70:10:20, ...
The Protected Area is characterised by a variety of habitats, of European interest including sand dunes, Posidonia oceanica beds, the critically endangered Sea daffodil, submerged reefs, as well as hundreds of species of flora and fauna, some of which are of great importance. ...
Els cefalaspídeus generalment són habitants de substrats tous, on viuen enterrats a diversos centímetres de profunditat a la recerca daliment. Algunes espècies habiten en fons de fang o pedres que són caladors darrossegament de vaixells de pesca i per això solen aparèixer entre les restes dels descarts no comercials de la pesca, com passa amb Scaphander lignarius, que pot arribar a 80 mm de longitud i que salimenta de foraminífers, poliquets, gasteròpodes i petits bivalves. En fons similars viuen Philine quadripartita i Ph. Catena, que salimenten de poliquets, foraminífers i bivalves. Les espècies de Retusa i Cylichna viuen en fons de sorra i fang o praderies de Posidonia oceanica alimentant-se de foraminífers i petits gasteròpodes. Les espècies del gènere Haminoea i Bulla són herbívores i viuen en fons fangosos de linterior de ports o fons de petites badies amb fanerògames marines, alimentant-se dalgues verdes, brunes i vermelles i fanerògames com Cymodocea nodosa, a ...
Highly magnified image (100,000 times magnification) showing a metal injected carbonate fossil in Posidonia Shale. The bright part is the metal which indicates the connected porosity. Width of the picture is 3 µm, see Klaver et al., (2016, http://dx.doi.org/10.1016/j.coal.2016.03.003) for further information. ...
The maintenance of mobile DNA sequences in clonal organisms has been seen as a paradox. If selfish mobile sequences spread through genomes only by overreplication in transposition, then sexuality is necessary for their spread through populations. The persistence of bacterial transposable elements without obvious dominant selectable markers has previously been explained by horizontal transfer. However, advantageous insertions of mobile DNAs are known in bacteria. Here we model maintenance of an otherwise selfish mobile DNA element in a clonal species in which selection for null mutations occurs during one of two temporally alternating environments. Large areas of parameter space permit maintenance of mobile DNAs where, without selection, they would have gone extinct. Horizontal transfer diminishes, rather than enhances, mean copy number. In finite populations, effective population sizes are greatly reduced by selective sweeps, and mean copy number can be increased as the reduced variance in copy ...
Motivation: Sequencing projects increasingly target samples from non-clonal sources. In particular, metagenomics has enabled scientists to begin to characterize the structure of microbial communities. The software tools developed for assembling and analyzing sequencing data for clonal organisms are, however, unable to adequately process data derived from non-clonal sources.Results: We present a new scaffolder, Bambus 2, to address some of the challenges encountered when analyzing metagenomes. Our approach relies on a combination of a novel method for detecting genomic repeats and algorithms that analyze assembly graphs to identify biologically meaningful genomic variants. We compare our software to current assemblers using simulated and real data. We demonstrate that the repeat detection algorithms have higher sensitivity than current approaches without sacrificing specificity. In metagenomic datasets, the scaffolder avoids false joins between distantly related organisms while obtaining ...
genomes of accumulated deleterious changes (Muller, 1964) and to create or spread bene locial combinations of mutations in an efficient manner (Fisher, 1930;Muller, 1932), two processes which are not available to clonal organisms. Two distinct but not mutually exclusive types of genetic exchange operate in RNA viruses. The first, reassortment ...
genomes of accumulated deleterious changes (Muller, 1964) and to create or spread bene locial combinations of mutations in an efficient manner (Fisher, 1930;Muller, 1932), two processes which are not available to clonal organisms. Two distinct but not mutually exclusive types of genetic exchange operate in RNA viruses. The first, reassortment ...
Bay Mouth Bar is a seagrass bed off of Alligator Point, Florida. It is home to an incredible diversity of predatory snails and bivalves.
Hello, I am wondering if anyone here can help me to find a clear up to date phylogeny and tree of early diverging/basal monocots? From Acorus- Alismatales. Kind regards, Mark ...
... _1 mesh miron conversion_20111226little squares across one linear inch of screenSieve Mesh Inches Micrsno Typical Material 14 Pollen (1200) 0005 12 Red Blood Cell 2Alismatales(2011b), for si
Male Jayakars seahorse camouflaged in seagrass habitat - View amazing Jayakars seahorse photos - Hippocampus jayakari - on Arkive
Kirk, Paul M. (2009). Haloguignardia oceanica (Ferd. & Winge) Kohlm., 1971. In: Index Fungorum Partnership (2017). Index Fungorum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=177917 on 2017-12- ...
Looking for Hydrocharitales? Find out information about Hydrocharitales. A monofamilial order of aquatic monocotyledonous plants in the subclass Alismatidae Explanation of Hydrocharitales
Odyssey Marine Exploration, Inc. (Nasdaq:OMEX), a pioneer in the field of deep-ocean exploration, provides an update on the Environmental
Obesity is a serious health concern which triggers other ailments like heart diseases, diabetes, joint ailments, sleep apnea, etc. Obesity is troublesome and its cause goes down to a low nutrient diet and lack of physical activity. For some, it is genetic and hard to control while others develop it with age. Many children become obese while growing up and this is a result of lack of adult guidance during childhood and adolescent years.. Therefore, to keep your child away from this life-threatening medical condition, you need to take steps rather than ignoring the slow transition of your kids towards obesity.. Keep your kids body regulated by incorporating these simple tips:. 1) Inculcate in your kids a habit of eating salad and having some water right before their meals. The good part of this activity is that half their hunger will be fulfilled in eating fibre rich fruits and veggies and having water will keep them hydrated and promote to eat less.. 2) Foster a habit of eating in small ...
Growth and Vegetative Development. Gunawardena, Arunika N. [1], Voicu, Laura [2], Dengler, Nancy G. [2]. Are caspases and ethylene involved in PCD-remodeling of lace place leaves?. The lace plant, Aponogeton madagascariensis, uses programmed cell death (PCD) during leaf development in a quite different way than other plants. PCD remodels the leaves of the lace plant, forming a lattice pattern of equidistantly-positioned perforations at a set time in development. Therefore, lace plant is an attractive model system for studying developmentally-regulated PCD in plants. In this system, discrete populations of cells undergo a disruption of cytoplasmic streaming and loss of anthocyanin, indicators of tonoplast rupture, as well as DNA degradation and other cytoplasmic changes such as formation of vesicles, shrinkage and invagination of the membrane, and degradation of other organelles. Concurrently, adjacent cells are unaffected by these processes and develop normally. Unlike many other forms of plant ...
Perforation formation in Aponogeton madagascariensis (Mirb.) H.Bruggen (lace plant) is an excellent model for studying developmentally regulated programmed cell death (PCD). In this study, we isolated and identified two lace plant vacuolar processing enzymes (VPEs) and investigated their involvement in PCD and throughout leaf development. Lace plant VPE transcript levels were determined during sev ...
BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...
BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...
r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...
r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...
Molecular dating was performed using a Bayesian method (Beast 1.4.8; Drummond & Rambaut 2007; see electronic supplementary material for methodological details). Two to three calibration points were specified. In each case, a normal prior was used, and its mean and standard deviations were set in such a way that 95 per cent confidence intervals corresponded to the upper and lower bounds of each calibration point. In this way, uncertainty concerning the exact dates of the calibration points could be accounted for. The age of the oldest syngnathid fossils (Monte Bolca formation, Early Eocene) (Patterson 1993; Bellwood 1996) was used as the first calibration point. These fossils date from the boundary between the Ypresian and Lutetian ages (approx. 48-50 Myr). To account for the possibility that they are younger than the origin of the family, we specified the beginning of the Eocene as an upper bound (mean = 52.2, s.d. = 2.3, 95% confidence interval: 48-56). The other two calibration points were ...
Satellite remote sensing is an advanced tool used to characterize seagrass biomass and monitor changes in clear to less-turbid waters by analyzing multi-temporal satellite images. Seagrass information was extracted from the multi-temporal satellite datasets following a two-step procedure: (i) retrieval of substrate-leaving radiances; and (ii) estimation of seagrass total aboveground biomass (STAGB). Firstly, the substrate leaving radiances is determined by compensating the water column correction of the pre-processed data because of the inherent errors associated with the geometric and radiometric fidelities including atmospheric perturbations. Secondly, the seagrass leaving radiances were correlated to the corresponding in situ STAGB to predict seagrass biomass. The relationship between STAGB and cover percentage was then established for seagrass meadows occurring in Merambong, Straits of Johor, Malaysia. By applying the above-mentioned approach on Landsat Thematic Mapper (TM) acquired in 2009 and
Seagrasses play a vital role in the survival of many marine animals, which use their meadows as habitat and feeding areas. But environmental pollution, such heavy metal, is contributing to the decline of seagrasses in some areas.. PhD candidate, Ms Nasim Shah Mohammadi from the UTS Climate Change Cluster (C3), is investigating Zostera mulleri, an endangered species of seagrass native to the southern half of Australia, and found mostly in the protected waters of NSW.. "My study aims to estimate the gene diversity and resilience of the remaining Z. mulleri so as to better understand the decline of seagrass meadows in Australia," Ms Shah Mohammadi said.. All seagrasses, including Zostera muuleri, are crucial to biodiversity as they contribute organic matter to food chains and help maintain water quality by stabilising sediment.. Ms Shah Mohammadi was recently awarded a $1000 grant from the Linnean Society of NSW, which will help further her research into the molecular investigation of Z. ...
Natural disturbances, such as grazing, storms, ice-scouring, and desiccation, are an inherent part of seagrass ecosystem dynamics. Seagrasses display an extraordinarily high degree of phenotypic plasticity, adapting rapidly to changing environmental conditions.. Seagrasses are in global decline, with some 30,000 km2 (12,000 sq mi) lost during recent decades. The main cause is human disturbance, most notably eutrophication, mechanical destruction of habitat, and overfishing. Excessive input of nutrients (nitrogen, phosphorus) is directly toxic to seagrasses, but most importantly, it stimulates the growth of epiphytic and free-floating macro- and micro-algae. This weakens the sunlight, reducing the photosynthesis that nourishes the seagrass and the primary production results.. Decaying seagrass leaves and algae fuels increasing algal blooms, resulting in a positive feedback. This can cause a complete regime shift from seagrass to algal dominance. Accumulating evidence also suggests that ...
Algae live inside marine animals. Coral tissues host several million algae per square inch, and these marine plants provide 90 percent of nutrients needed by the coral. The symbiotic relationship is based on a cycle of coral enzymes which cause algae to release carbohydrates and algae to receive nitrogen from coral waste. Algae are shaded from intense sunlight by coral pigments ...
APG IV Classification: Domain: Eukaryota • (unranked): Archaeplastida • Regnum: Plantae • Cladus: angiosperms • Cladus: monocots • Ordo: Alismatales • Familia: Potamogetonaceae • Genus: Potamogeton • Species: Potamogeton spirillus ...
My research focuses on marine ecology and fisheries science, specifically on the: (1) trophic connectivity within and between habitats in the marine environment; (2) interactions of fauna with coastal habitats, such as seagrass meadows and surf zones; and (3) fisheries interactions with the environment and management. My major focus on connectivity within and between habitats in the marine environment, seeks to understand the importance of the movement of material from one habitat to another in coastal seascapes. This program is directed towards examining the movement of nutrients via detritus from reefs to seagrass meadows and detritus from reefs and seagrass meadows to surf zones and beaches.. A large part of my research focuses on using stable isotopes as a tool for understanding ecological interactions. This has focused on: testing the assumptions of bulk stable isotopes in food web studies and comparing this approach to other biomarker tools; using novel enriched stable isotopes to test for ...
Although often overlooked, seagrasses provide coastal zones with a number of ecosystem goods and services. Seagrasses are considered ecosystem engineers.[6][3][2] This means that the plants alter the ecosystem around them. This adjusting occurs in both physical and chemical forms. Many seagrass species produce an extensive underground network of roots and rhizome which stabilizes sediment and reduces coastal erosion.[7] This system also assists in oxygenating the sediment, providing a hospitable environment for sediment-dwelling organisms.[8] Seagrasses also enhance water quality by stabilizing heavy metals, pollutants, and excess nutrients[9][3][2] The long blades of seagrasses slow the movement of water which reduces wave energy and offers further protection against coastal erosion and storm surge. Furthermore, because seagrasses are underwater plants, they produce significant amounts of oxygen which oxygenate the water column. These meadows account for more than 10% of the oceans total ...
Wells, F.E., McDonald, J.I. and Huisman, J.M. (2009) Introduced Marine Species in Western Australia. Department of Fisheries, Perth, Australia. Huisman, J.M., Abbott, I.A. and Smith, C.M. (2007) Hawaiian reef plants. University of Hawaii Sea Grant College Program, Honolulu, Hawaii. Huisman, J.M. (2006) Algae of Australia: Nemaliales. CSIRO Publishing, Collingwood, Victoria. Huisman, J., Phillips, J. and Parker, C. (2006) Marine plants of the Perth region. Department of Environment and Conservation, Kensington, Australia. Huisman, J. and Parker, C. (2005) How to collect and document marine plants. Western Australian Herbarium. Huisman, J.M. (2000) Marine plants of Australia. University of Western Australia Press in association with Australian Biological Resources Study, Nedlands, Australia. ...
They found that when boats appeared, the turtles turned tail. The arrival of harvest season saw turtle hotspots shift away from the congregated scalloping vessels and closer to the coast.. These human-driven shifts in the distribution of turtles may mean theyre spending less time in areas that are likely to be of better quality, which could in turn affect their nutritional intake and energy budgets, said study lead author Natalie Wildermann, a postdoctoral researcher at FSU. When forced to share limited space with fleets of scallop harvesters, Wildermann said, the turtles might need to expend greater effort in finding the food they need. Crowded waters could also breed increased competition among individual turtles for scarce resources. And then theres the basic environmental effects of the scalloper flotillas.. The thousands of vessels - and their oil leaks and chemicals - could have a considerable impact on the overall water and seagrass habitat in the region, Wildermann said. While a ...
Field and laboratory experiments were performed to investigate the palatability to predatory fishes of organic extracts of the Caribbean ascidian Didemnum conchyliatum. This tan-colored compound ascidian grows as an epibiont on seagrass blades. A dichloromethane/methanol extract of the ascidian incorporated into carrageenan food strips at the same volumetric concentration as the extract occurred in the ascidian tissues deterred feeding of a natural assemblage of consumers in the same seagrass beds from which the ascidians were collected. Bioassay-directed fractionation of this extract revealed that the deterrent property was restricted to fractions containing novel indole-maleimide-imidazole alkaloids, didemnimides A to D. Laboratory assays of purified metabolites revealed that didemnimides C and D deterred feeding by a generalist predatory reef fish, but that didemnimides A and B were not deterrent. Only didemnimide D deterred feeding in the field; neither didemnimide C nor the fraction ...
Microenvironmental Ecology of Seagrasses:. My research has so far focussed on how seagrasses alter the biogeochemical processes and chemical conditions in their rhizosphere via release of O2 and DOC to e.g. detoxify the surrounding sediment and mobilize essential nutrients. Future research interest are aiming at resolving important seagrass/microbe interactions in the seagrass rhizosphere and leaf microenvironment to elucidate potential mutually beneficial relationships between the seagrass host and their microbial community. For further information about my research please visit: elgetti.wordpress.com. ...
The majority of the stored carbon is in the soil anchoring seagrasses, where it can be several meters deep and could be storing carbon for thousands of years.... | Vertical Farm - Food Factory
Due to widespread and continuing seagrass loss, restoration attempts occur worldwide. This article presents a geospatial modeling technique that ranks the suitability of sites for restoration based on light availability and boating activity, two factors cited in global studies of seagrass loss and restoration failures. The model presented here was created for Estero Bay, Florida and is a predictive model of light availability and boating pressure to aid seagrass restoration efforts. The model is adaptive and can be parameterized for different locations and updated as additional data is collected and knowledge of how factors impact seagrass improves. Light data used for model development were collected over one year from 50 sites throughout the bay. Coupled with high resolution bathymetric data, bottom mean light availability was predicted throughout the bay. Data collection throughout the year also allowed for prediction of light variability at sites, a possible indicator of seagrass growth and ...
Felisberto P, Jesus SM, Zabel F, et al. Acoustic monitoring of O2 production of a seagrass meadow. Journal of Experimental Marine Biology and Ecology. 2015;464:75 - 87. doi:10.1016/j.jembe.2014.12.013 ...
Alismatidae superorder 1. Butomanae order 1. Butomales family 1. Butomaceae superorder 2. Alismatanae order 1. Alismatales ...
... subclass Alismatidae order Cyclanthales order Arales subclass Commelinidae order Commelinales order Eriocaulales order ... Alismatidae superorder 1. Butomanae superorder 2. Alismatanae subclass 2. Triurididae subclass 3. Aridae superorder 1. Acoranae ... superorder Hydatellanae superorder Juncanae superorder Poanae subclass Arecidae superorder Arecanae subclass Alismatidae ...
New combinations in North American Alismatidae. Novon 6(4): 370-371 Jepson Manual Treatment Photo gallery. ...
... alismatidae (wd , gwp gwe g , in it p) MeSH B06.388.100.025.033 --- alismataceae (wd , gwp gwe g , in it p) MeSH B06.388. ...
Class Liliatae (Monocotyledoneae) Subclass Alismatidae 4 orders Order Alismatales ... Order Triuridales Subclass Commelinidae 8 ... Subclass Alismatidae Order Alismatales Butomaceae Limnocharitaceae Alismataceae Order Hydrocharitales Hydrocharitaceae Order ...
"Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Flora of North America. 22. Oxford University ...
Subclass Alismatidae 4 orders *Order Alismatales. *.... *Order Triuridales. *Subclass Commelinidae 8 orders *Order Commelinales ...
1760) (Monocotyledons) p. 595 Subclass I: Alismatidae p. 589 Subclass II: Liliidae Takht. (1966) p. 625 Superorder Lilianae ...
azpiklasea Alismatidae ordena Alismatales. ordena Hydrocharitales. ordena Najadales. ordena Triuridales. azpiklasea Arecidae ...
Alamklass Alismatidae *Selts Alismatales *Butomaceae. *Limnocharitaceae. *Alismataceae. *Selts Hydrocharitales * ...
Flora of North America: North of Mexico Volume 22: Magnoliophyta: Alismatidae, Arecidae, Commelinidae(in Part), and ...
Alismatidae, Arecidae, Commelinidae(in Part), and Zingiberidae. Oxford University Press, USA. p. 186. ISBN 9780195137293. ...
However, Cronquist assumed a much smaller order and assigned the order to subclass Alismatidae, in class Liliopsida [= ...
Flowering plants Dicotyledons Magnoliidae Hamamelidae Caryophyllidae Dilleniidae Rosidae Asteridae Monocotyledons Alismatidae ...
Thorne, R. F. The classification and geography of the monocotyledon subclasses Alismatidae, Liliidae and Commelinidae, pp. 75- ...
The Cronquist system of 1981 placed the family in order Najadales of subclass Alismatidae in class Liliopsida [=monocotyledons ...
22, Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford University Press, New York, NY, USA ...
... that used this name for an order in subclass Alismatidae with this circumscription: order Najadales family Aponogetonaceae ...
... was an order of flower plants that was used in the Cronquist system, in the subclass Alismatidae, with this ...
A well-known system that used this name is the Cronquist system (1981), for an order in subclass Alismatidae, with this ...
Alismatidae Liliidae - 3 superorders Pandananae Dioscoreanae Lilianae - 3 orders Liliales - 12 families Orchidales Iridales ...
Subclassis Alismatidae *Ordo Alismatales *Alismataceae. *Butomaceae. *Hydrocharitaceae. *Juncaginaceae. *Potamogetonaceae. * ...
... is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system ... see Alismatidae info). The APG II system does not use formal botanical names above the rank of order; it assigns most of the ... subclass Alismatidae order Alismatales order Hydrocharitales order Najadales order Triuridales This subclass comprises less ... subclass Alismatidae superorder Alismatanae order Butomales order Hydrocharitales order Najadales order Alismatales order ...
Alismatidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system ... see Alismatidae info). The APG II system does not use formal botanical names above the rank of order; it assigns most of the ... subclass Alismatidae order Alismatales order Hydrocharitales order Najadales order Triuridales This subclass comprises less ... subclass Alismatidae superorder Alismatanae order Butomales order Hydrocharitales order Najadales order Alismatales order ...
Alismatidae - Aquatic herbs. Arecidae - Palms, aroids. Commelinidae - Spiderworts, papyrus.. Zingiberidae - Banana, bromeliads ...
Alismatidae. A relatively primitive subclass of the class Liliopsida (monocotyledons) of the division Magnoliophyta ( ... A small order of flowering plants, division Magnoliophyta (Angiospermae), which gives its name to the subclass Alismatidae of ...
Alismatidae Order. Alismatales Family. Alismataceae - Water-plantain family Genus. Sagittaria L. - arrowhead ...
Alismatidae Order. Alismatales Family. Alismataceae - Water-plantain family Genus. Damasonium Hill - damasonium ...
"Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Flora of North America. 22. Oxford University ...
Zidorn C (2016) Secondary metabolites of seagrasses (Alismatales and Potamogetonales; Alismatidae): chemical diversity, ...
Alismatidae superorder 1. Butomanae order 1. Butomales family 1. Butomaceae superorder 2. Alismatanae order 1. Alismatales ...
Subclass Alismatidae. Order Alismatales. Family Zosteraceae. Genus Zostera. *References. *Submit Feedback. *Submit Reference ...
Subclass Alismatidae. Order Alismatales. Family Zosteraceae. Genus Zostera. *Taxonomy. *References. *Submit Feedback ...
Subclass Alismatidae 4 orders *Order Alismatales. *.... *Order Triuridales. *Subclass Commelinidae 8 orders *Order Commelinales ...
Subclass/Sottoclasse: Alismatidae. Order/Ordine: Najadales. Family/Famiglia: Scheuchzeriaceae Genera/Generi: 1) Scheuchzeria L ... Subclass/Sottoclasse: Alismatidae. Order/Ordine: Najadales. Family/Famiglia: Scheuchzeriaceae Genus/Genere: Scheuchzeria L.. ...
Systematics of subclass Alismatidae: A synthesis of approaches. pp 353-377 in: PJ Rudall, PJ Cribb, DF Cutler & CJ Humphries ( ...
Subclass Alismatidae. Order Najadales. Family Potamogetonaceae - Pondweed family. Contains 2 Genera and 77 accepted taxa ...
azpiklasea Alismatidae ordena Alismatales. ordena Hydrocharitales. ordena Najadales. ordena Triuridales. azpiklasea Arecidae ...
Subclass Alismatidae. Order Alismatales. Family Butomaceae - Flowering Rush family. Genus Butomus L. - butomus P. ...
Alamklass Alismatidae *Selts Alismatales *Butomaceae. *Limnocharitaceae. *Alismataceae. *Selts Hydrocharitales * ...
1997) Phylogenetic studies in Alismatidae. II. Evolution of marine angiosperms (seagrasses) and hydrophily. Syst Bot 22: 443- ...
The monocots were similarly divided into subclasses: Alismatidae, Arecidae, Commelinidae, Zingiberidae, and Liliidae. Although ...
Thorne RF (2000) The classification and geography of the monocotyledon subclasses Alismatidae, Liliidae and Commelinidae. In: ...
Flora of North America: North of Mexico Volume 22: Magnoliophyta: Alismatidae, Arecidae, Commelinidae(in Part), and ...
A generic treatment of Alismatidae in the Neotropics. Acta Amazon. 15(suppl.): 153--193. Phillips, R. C. and C. P. McRoy, eds. ...
Volume 22: Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. New York, NY. ...
22, Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford University Press, New York. 352 ...
22, Magnoliophyta: Alismatidae, Arrecidae, Commelinidae (in part), and Zingiberidae. Oxford University Press, New York. 352 pp ...