Characeae
Chara
Characterization of MADS-box genes in charophycean green algae and its implication for the evolution of MADS-box genes. (1/5)
The MADS-box genes of land plants are extensively diverged to form a superfamily and are important in various aspects of development including the specification of floral organs as homeotic selector genes. The closest relatives of land plants are the freshwater green algae charophyceans. To study the origin and evolution of land plant MADS-box genes, we characterized these genes in three charophycean green algae: the stonewort Chara globularis, the coleochaete Coleochaete scutata, and the desmid Closterium peracerosum-strigosum-littorale complex. Phylogenetic analyses suggested that MADS-box genes diverged extensively in the land plant lineage after the separation of charophyceans from land plants. The stonewort C. globularis mRNA was specifically detected in the oogonium and antheridium together with the egg and spermatozoid during their differentiation. The expression of the C. peracerosum-strigosum-littorale-complex gene increased when vegetative cells began to differentiate into gametangial cells and decreased after fertilization. These expression patterns suggest that the precursors of land plant MADS-box genes originally functioned in haploid reproductive cell differentiation and that the haploid MADS-box genes were recruited into a diploid generation during the evolution of land plants. (+info)The GapA/B gene duplication marks the origin of Streptophyta (charophytes and land plants). (2/5)
Independent evidence from morphological, ultrastructural, biochemical, and molecular data have shown that land plants originated from charophycean green algae. However, the branching order within charophytes is still unresolved, and contradictory phylogenies about, for example,the position of the unicellular green alga Mesostigma viride are difficult to reconcile. A comparison of nuclear-encoded Calvin cycle glyceraldehyde-3-phosphate dehydrogenases (GAPDH) indicates that a crucial duplication of the GapA gene occurred early in land plant evolution. The duplicate called GapB acquired a characteristic carboxy-terminal extension (CTE) from the general regulator of the Calvin cycle CP12. This CTE is responsible for thioredoxin-dependent light/dark regulation. In this work, we established GapA, GapB, and CP12 sequences from bryophytes, all orders of charophyte as well as chlorophyte green algae, and the glaucophyte Cyanophora paradoxa. Comprehensive phylogenetic analyses of all available plastid GAPDH sequences suggest that glaucophytes and green plants are sister lineages and support a positioning of Mesostigma basal to all charophycean algae. The exclusive presence of GapB in terrestrial plants, charophytes, and Mesostigma dates the GapA/B gene duplication to the common ancestor of Streptophyta. The conspicuously high degree of GapB sequence conservation suggests an important metabolic role of the newly gained regulatory function. Because the GapB-mediated protein aggregation most likely ensures the complete blockage of the Calvin cycle at night, we propose that this mechanism is also crucial for efficient starch mobilization. This innovation may be one prerequisite for the development of storage tissues in land plants. (+info)Caterpillar regurgitant induces pore formation in plant membranes. (3/5)
Formation of channel-like pores in a plant membrane was induced within seconds after application of an aqueous solution containing regurgitant of the insect larvae Spodoptera littoralis. Gated pore currents recorded on the tonoplast of the Charophyte Chara corallina displayed conductances up to several hundred pS. A voltage-dependent gating reaction supports the assumption that pore-forming molecules have amphipathic properties. Regurgitant samples separated into masses smaller or larger than 3kDa were evaluated by patch-clamp and mass spectroscopy. Fractions containing peptides larger than 3kDa constituted pores of large conductances, peptides smaller than 3kDa constituted pores of small conductances. Peptide-free eluates did not constitute conducting pores, indicating that pore-forming components in regurgitant are membrane-spanning oligopeptides. (+info)Microfossils in micrites from Serra da Bodoquena (MS), Brazil: taxonomy and paleoenvironmental implications. (4/5)
(+info)Exogenous melatonin affects photosynthesis in characeae Chara australis. (5/5)
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N.H.L. Wont Punish Chara Over Hit That Caused Concussion - The New York Times
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2015 in paleobotany
Characeae)". Phytotaxa. 226 (2): 199-200. doi:10.11646/phytotaxa.226.2.11. Bruno Granier; Dany Azar; Sibelle Maksoud; Raymond ...
Sphacelariales
Rhodophyceae, Phaeophyceae, Characeae. Verlag Friedriech von Zezschwitz. Guiry, M.D.; G.M. Guiry (2009). "AlgaeBase". World- ...
Kelp
Rhodophyceae, Phaeophyceae, Characeae. Gera: Verlag Friedriech von Zezschwitz. pp. i-iv, 1-382, 122 (41 col.) pls. Bolton, John ...
Alexander Clifford Beauglehole
Wood, R.D. (1972). "Characeae of Australia". Nova Hedwigia. 22: 1-120. Filson, R.B. (1978). "A Revision of The Genus Heterodea ...
Ruth Mason
R.D. Wood; R. Mason (March 1977). "Characeae of New Zealand". New Zealand Journal of Botany. 15 (1): 87-180. doi:10.1080/ ... R.D. Wood; R. Mason (March 1977). "Characeae of New Zealand". New Zealand Journal of Botany. 15 (1): 87-180. doi:10.1080/ ...
Lindley system
... or Moss-like plants Musci Hepaticae Characeae 3. Aphyllae Lichenes Fungi Algae (pages refer to 1853 edition) p. 5 3 Alliances ... Algales p. 8 Diatomaceae ... Characeae Fungales, Fungi p. 29 Hymenomycetes ... Physomycetes Lichenales, Lichens p. 45 ...
Alexander Braun
on directional conditions involving juice flow in the cell of Characeae). 1853: Das Individuum der Pflanze in seinem Verhältnis ... African Characeae). 1867: "Conspectus systematicus Characearum europaearum". 1870: Neuere Untersuchungen über die Gattungen ...
Stephan Endlicher
Characeae Ordo V. Ulvaceae Ordo VI. Floridae Ordo VII. Fucaceae Classis II. Lichenes Sectio II. Hysterophyta Classis III. Fungi ...
LMO7
Iwabuchi K, Kaneko T, Kikuyama M (2006). "Ionic mechanism of mechano-perception in Characeae". Plant Cell Physiol. 46 (11): ...
Nitellopsis
Others place it in the family Characeae. As of February 2022[update], AlgaeBase listed the following species: Extant ...
Smith system
Siphonocladiales Family 1. Valoniaceae Family 2. Dasycladaceae Class 2. Charophyceae Order Charales Family Characeae Order 1. ...
François Crépin
Les Characées de Belgique, 1863 - Characeae native to Belgium. La nomenclature botanique au congrès international de botanique ...
Llano Estacado
Proctor, Vernon W. (January 1990). "Characeae of Llano Estacado (Texas and Adjacent New Mexico) Playas". Journal of ...
Lepidocaris
It is frequently found in association with the charophyte Palaeonitella (Characeae); if the ecology of Palaeonitella resembled ...
Johannes Müller Argoviensis
He then published works on Euphorbiaceae, Characeae, Apocynaceae, mosses and fungi. His annotated catalog of lichens, published ...
Nitella opaca
... is a species of algae in the family Characeae. Nitella opaca is a dioecious species very similar to Nitella ...
William Richardson Linton
Flora of Derbyshire: Flowering Plants, Higher Cryptogams, Mosses and Hepatics, Characeae. London: Bemrose & Sons Ltd., 1903. ...
Lychnothamnus
... is a genus of stoneworts belonging to the family Characeae. The species of this genus are found in Europe, ...
Joseph Whittaker
Characeae. London: Bemrose & Sons Ltd. Retrieved 17 June 2011. Painter, W. H. 1889 A contribution to the flora of Derbyshire, ...
Nitella tenuissima
... is a species of alga belonging to the family Characeae. It has cosmopolitan distribution. "Nitella ...
Nitella capillaris
... is a species of stonewort belonging to the family Characeae. It is native to Europe and Northern America. " ...
Nitella translucens
... is a species of stonewort belonging to the family Characeae. It has cosmopolitan distribution. "Nitella ...
Nitella gracilis
... is a species of stonewort belonging to the family Characeae. It has cosmopolitan distribution. "Nitella ...
Chara baltica
... is a species of stonewort belonging to the family Characeae. It is native to Europe. "Chara baltica Bruzelius". ...
Nitella
... is a genus of charophyte green algae in the family Characeae. The species in the genus include: Nitella abyssinica A. ...
Chara canescens
... is a species of stonewort belonging to the family Characeae. Its native range is Europe and Northern America. " ...
Laguna del Negro Francisco
In sediments remnants of characeae, diatoms, ostracods and Ruppia have been found; today only one ostracod species persists in ...
Chara baueri
... is a species of alga belonging to the family Characeae. It has almost cosmopolitan distribution. "Chara baueri A. ...
Masashi Tazawa
"Influence of intracellular and extracellular tonicities on water permeability in Characeae cells". Protoplasma. 74: 57-270.{{ ...
Tolypella
... is a genus of green algae belonging to the family Characeae. The genus was described in 1857 by Alexander Braun. The ...
Characeae - Wikipedia
Characeae is a family of freshwater green algae in the order Charales, commonly known as stoneworts. They are also known as ... Characeae are the principal photosynthesizers of some of the volcanic crater lakes of Nicaragua, and can be found in excess of ... As a result, the Characeae have the most complex structure of all green algae. Genera that include extant species and are ... In some treatments, the Characeae includes all the living (extant) species of Charales; this circumscription is followed here. ...
Biomass from the Sea | IntechOpen
Nonindigenous Aquatic Species
Names from Index Nominum Algarum
Nitella C.Agardh, 1824
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E-Flora BC Atlas Page
Chara species are filamentous, mat forming green algae. They can be recognised by their whorls of simple branchlets, general stiffness and/or calcification. Common stonewort is a monecious species of charophyte that is commonly found in calcareous freshwater sites (lakes and rivers) where it may grow in thick populations or carpets in shallow water. It can resemble some species of submerged aquatic vascular plants. Although plants are smooth, stems are commonly encrusted in lime. Identification of Chara vulgaris is considered difficult because of great variation in morphology. Wood (1967) states that it has "considerable ecological and great genetic variation". Several forms of Chara vulgaris have been given varietal names. However, these varieties appear to represent ecological plasticity. Proper identification of Chara species is dependent on features of the stem and reproductive structures, and usually requires microscopic work. Wood (1967) maps Chara vulgaris as widespread in the US, Central ...
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Timothy Field Allen 1837 - 1902 | Sue Young Histories
Characeae. He is commemorated by the grass Danthonia Alleni Austin, Eriogonuum Alleni S. Watson, and by Sundrops of eastern ... Allen was a specialist in the Characaea family and he donated his collection of Characeae to the New York Botanical Garden. He ... His interest in algae led him to specialize in the family Characeae. Allen wrote many scientific papers on these plants and ... wrote The Characaea of America, Contributions to Japanese Characeae, Development of the Cortex in Chara, Characeæ Americanæ, ...
Species profile-Nitella tasmanica | Environment, land and water | Queensland Government
Anton Eleutherius Sauter
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Chara4
- Genera that include extant species and are placed in a broad circumscription of the family are: Chara L. Lamprothamnium J.Groves Lychnothamnus (F.J.Ruprecht) A.Braun Nitella C.A.Agardh Nitellopsis Hy (placed in Feistiellaceae by some sources) Tolypella (A.Braun) A.Braun Most extant Characeae are found in fresh water, usually in still, clear water where they attach to the substrate by rhizoids. (wikipedia.org)
- Characeae - Chara sp. (stanford.edu)
- and Gloeobacter violaceus (Cyanophyceae) against Aphanothece caldariorum, Gloeothece coerulea, and Gloeothece linearis, while two names are recommended for conservation with a conserved type: Chara hispida (Characeae) and Gloeothece (Cyanophyceae). (vliz.be)
- Chara is a genus of blue-green algae in the family Characeae. (ufl.edu)
Algae4
- Characeae is a family of freshwater green algae in the order Charales, commonly known as stoneworts. (wikipedia.org)
- As a result, the Characeae have the most complex structure of all green algae. (wikipedia.org)
- His interest in algae led him to specialize in the family Characeae . (sueyounghistories.com)
- This is the case, among others, for the sand martin, lizards, wall lizards, natterjack toads or typical algae typical of poor environments such as characeae. (lifeinquarries.eu)
Freshwater1
- Living members of the Characeae sensu lato grow in freshwater and brackish environments worldwide, and have large, macroscopic thalli growing up to 120 cm long, they are branched, multicellular, and use chlorophyll to photosynthesize. (wikipedia.org)
Family2
- Allen was a specialist in the Characaea family and he donated his collection of Characeae to the New York Botanical Garden . (sueyounghistories.com)
- She is a specialist researcher on family Characeae and seed banks. (edu.au)
Taxonomy1
- Charophytes (Characeae, Charophyta) in the Czech Republic: taxonomy, autecology and distribution. (algaebase.org)
Family1
- The algae, Starry stonewort (scientific name: Nitellopsis obtusa), a member of the Characeae family, was first detected in Michigan lakes in 2006. (lakeofthewoodsmi.org)
Nitella1
- The ammonium concentration in the vacuoles of single internodal cells of Characeae alga Nitella flexilis was carried out. (bsu.by)
Species1
- We propose a robust model of streaming emergence that combines motor dynamics with both micro- and macroscopic hydrodynamics to explain how several independent processes, each ineffectual on its own, can reinforce to ultimately develop the patterns of streaming observed in the Characeae and other streaming species. (cam.ac.uk)
Form1
- Characeae form a carpet deep under water and their presence is a sign of good water quality. (living-with-rivers.com)