In vitro bioaccessibility of proteins and lipids of pH-shift processed Nannochloropsis oculata microalga

The pH-shift process fractionates biomass into soluble proteins and insoluble fractions, followed by precipitation and recovery of the solubilized proteins. Nannochloropsis oculata in seawater was subjected to the pH-shift process, followed by digestion of various intermediates and product fractions of the process, using the Infogest in vitro digestion model (Minekus et al., 2014) with added gastric lipase. As measures for protein and lipid accessibility, degrees of protein hydrolysis and fatty acid liberation were assessed post-digestion and compared to the amounts of peptide bonds and total fatty acids present in the raw materials. Results showed that neither proteins nor lipids of intact Nannochloropsis cells were accessible to the mammalian digestive enzymes used in the digestion model. Cell disruption, and to a lesser extent, further pH-shift processing with protein solubilisation at pH 7 or pH 10, increased the accessibility of lipids. For proteins, differences amongst the pH-shift processed

Investigation of mechanisms modulating photosynthetic efficiency in Nannochloropsis gaditana - [email protected]

La fotosintesi ossigenica è un processo fondamentale per la vita sulla terra in quanto consente a piante e alghe di convertire la luce solare in energia chimica generando ossigeno molecolare come sottoprodotto. La luce può anche essere dannosa e quando è in eccesso può portare alla sovreccitazione dei fotosistemi e alla produzione di specie reattive dellossigeno (ROS) con un conseguente calo dellefficienza fotosintetica. In un ambiente naturale estremamente dinamico gli organismi fotosintetici hanno evoluto meccanismi sofisticati in grado di modulare la loro efficienza per catturare e sfruttare al meglio la luce. Per esempio il cosiddetto quenching non fotochimico della fluorescenza (NPQ) agisce dissipando lenergia in eccesso sotto forma di calore ed è utilizzato come sistema di risposta a breve termine agi stress luminosi col fine di evitare danni ossidativi. Il carotenoide zeaxantina appartenente al ciclo delle xantofille partecipa attivamente a questa risposta di dissipazione termica ...

Most recent papers with the keyword Biodiesel | Read by QxMD

Thraustochytrids isolated from hot tropical and sub-tropical waters have been well studied for DHA and biodiesel production in the last decades. However, little research has been performed on the oils of cold water thraustochytrids, in particular from the North Sea region. In this study, thraustochytrid strains from British waters showed high relative levels of omega-3 long-chain (≥C20) polyunsaturated fatty acids (LC-PUFA), including docosahexaenoic acid (DHA, 22:6ω3). The relative levels of DHA (as % of total fatty acids, TFA) in the different British strains are hitherto amongst the highest recorded from any thraustochytrid screening study, with strain TL18 reaching up to 67% DHA in modified Glucose-Yeast Extract-Peptone (GYP) medium ...

Regulation of the cholesterol biosynthetic pathway and its integration with fatty acid biosynthesis in the oleaginous microalga...

Sterols are vital structural and regulatory components in eukaryotic cells; however, their biosynthetic pathways and functional roles in microalgae remain poorly understood. In the oleaginous microalga Nannochloropsis oceanica, the sterol biosynthetic pathway produces phytosterols as minor products and cholesterol as the major product. The evidence together with their deduced biosynthetic pathways suggests that N. oceanica exhibits features of both higher plants and mammals. Temporal tracking of sterol profiles and sterol-biosynthetic transcripts in response to changes in light intensity and nitrogen supply reveal that sterols play roles in cell proliferation, chloroplast differentiation, and photosynthesis. Furthermore, the dynamics of fatty acid (FA) and FA-biosynthetic transcripts upon chemical inhibitor-induced sterol depletion reveal possible co-regulation of sterol production and FA synthesis, in that the squalene epoxidase inhibitor terbinafine reduces sterol content yet significantly elevates

Biomass production by N. gaditana.(a) N. gaditana produ | Open-i

Biomass production by N. gaditana.(a) N. gaditana production of biomass, lipids, protein and sugars quantified during continuous growth over a period of 3 month

Surfactant-assisted direct biodiesel production from wet Nannochloropsis occulata by in situ transesterification/reactive...

This article reports an in situ transesterification/reactive extraction of Nannochloropsis occulata for fatty acid methyl ester (FAME) production using H2SO4, sodium dodecyl sulphate (SDS) plus H2SO4 and zirconium dodecyl sulphate (ZDS). A maximum 67 % FAME yield was produced by ZDS. Effect of inclusion of sodium dodecyl sulphate (SDS) in H2SO4 for FAME enhancement and water tolerance was also studied by hydrating the algae with 10 % - 30 % distilled water (w/w) dry algae. Treatment with SDS in H2SO4 increases the FAME production rate and water tolerance of the process. Inclusion of SDS in H2SO4 produced a maximum 98.3 % FAME yield at 20 % moisture in the algae. The FAME concentration began to diminish only at 30 % moisture in the algae. Furthermore, the presence of a small amount of water in the biomass or methanol increased the lipid extraction efficiency, improving the FAME yield, rather than inhibiting the reaction.

Fluorescence spectroscopy and chemometrics for simultaneous monitoring of cell concentration, chlorophyll and fatty acids in...

TY - JOUR. T1 - Fluorescence spectroscopy and chemometrics for simultaneous monitoring of cell concentration, chlorophyll and fatty acids in Nannochloropsis oceanica. AU - Sá, Marta. AU - Bertinetto, Carlo G.. AU - Ferrer-Ledo, Narcís. AU - Jansen, Jeroen J.. AU - Wijffels, Rene. AU - Crespo, João G.. AU - Barbosa, Maria. AU - Galinha, Claudia F.. N1 - info:eu-repo/grantAgreement/EC/H2020/745754/EU# Associate Laboratory for Green Chemistry - LAQV which is financed by national funds from FCT/MCTES (UID/QUI/50006/2019), PhD grant SFRH/BD/108894/2015 of FCT/MCTES.. PY - 2020/12/1. Y1 - 2020/12/1. N2 - Online monitoring of algal biotechnological processes still requires development to support economic sustainability. In this work, fluorescence spectroscopy coupled with chemometric modelling is studied to monitor simultaneously several compounds of interest, such as chlorophyll and fatty acids, but also the biomass as a whole (cell concentration). Fluorescence excitation-emission matrices (EEM) ...

Cellular Identification of a Novel Uncultured Marine Stramenopile (MAST-12 Clade) Small-Subunit rRNA Gene Sequence from a...

Identifying the organisms behind novel environmental lineages has been one of several major targets in microbial biodiversity research (9, 23, 38, 41). This is especially important in the case of evolutionarily interesting lineages at higher taxonomic levels and in the case of lineages that occur frequently in different environmental systems and whose morphological diversity and ecological function are unknown. The uncultured MAST clades identified recently (23, 44) meet all of these criteria and therefore deserve further study. Due to the information obtained as a result of the research that we conducted, we were able to determine the morphotype for the 18S rRNA gene sequence that branches within the MAST-12 clade which we retrieved from a Norwegian estuarine microbial mat sample.. Our phylogenetic reconstruction of stramenopiles using 18S rRNA gene signatures is consistent with previous analyses. The previous analyses confirmed the monophyly of phototrophic stramenopiles, resulting in ...

Development of direct conversion method for microalgal biodiesel production using wet biomass of Nannochloropsis salina. |...

Sigma-Aldrich offers abstracts and full-text articles by [Tae-Hyoung Kim, William I Suh, Gursong Yoo, Sanjiv K Mishra, Wasif Farooq, Myounghoon Moon, Anupama Shrivastav, Min S Park, Ji-Won Yang].

Home - Dr Giorgio Perin

Bellan A, Bucci F, Perin G, et al.Bellan A, Bucci F, Perin G, Alboresi A, Morosinotto T close, 2020, Photosynthesis regulation in response to fluctuating light in the secondary endosymbiont alga Nannochloropsis gaditana, Plant and Cell Physiology, Vol:61, ISSN:0032-0781, Pages:41-52. ...

Vaucheria - Wikipedia

Vaucheria is a genus of Xanthophyceae or yellow-green algae. It is one of only two genera in the family Vaucheriaceae. The type species of the genus is Vaucheria disperma. Vaucheria exhibits apical growth from the tip of filaments forming mats in either terrestrial or freshwater environments. Its filaments form coenocytes with a large central vacuole pushing against the surrounding cytoplasm; the vacuole extends along the entire filament except for the growing tip. The chloroplasts are located on the periphery of the cytoplasm with the nuclei aggregating toward the center near the vacuole. It has a diplontic life cycle, previously thought to be haplontic. Vaucheria disperma Vaucheria litorea Guiry, M.D.; Guiry, G.M. (2008). "Pseudodichotomosiphon". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Guiry, M.D.; Guiry, G.M. (2008). "Vaucheria". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Lee, Robert Edward (2008). ...

OPUS at UTS: Stramenopile microorganisms associated with the massive coral Favia sp. - Open Publications of UTS Scholars

The surfaces of massive corals of the genus Favia from Eilat, Red Sea, and from Heron Island, Great Barrier Reef, are covered by a layer of eukaryotic microorganisms. These microorganisms are embedded in the coral mucus and tissue. In the Gulf of Eilat, the prevalence of corals covered by patches of eukaryotic microorganisms was positively correlated with a decrease in water temperatures (from 25-28 degrees C in the summer to 20-23 degrees C in winter). Comparisons carried out using transmission and scanning electron microscopy showed morphological similarities between the microorganisms from the two geographically distant reefs. The microorganisms found on and in the tissues were approximately 5-15 microm in diameter, surrounded by scales in their cell wall, contained a nucleus, and included unique auto-florescent coccoid bodies of approximately 1 mum. Such morphological characters suggested that these microorganisms are stramenopile protists and in particular thraustochytrids. Molecular ...

Schizochytrium - Wikipedia

Schizochytrium is a genus of unicellular eukaryotes in the family Thraustochytriaceae, which are found in coastal marine habitats. They are assigned to the Stramenopiles (heterokonts), a group which also contains kelp and various microalgae. Several stages occur in its lifecycle. The feeding form has a stiff, rounded body with cellular extensions used in feeding. Cells can transform into mobile flagellated cells with stiff tripartite hairs typical of the Stramenopiles. Cells can also grow and divide to form a cluster of cells which may become a sorus that produces biflagellated zoospores. Certain species produce large amounts of docosahexaenoic acid (DHA) and are grown commercially for production of this oil for animal feeds, biomass, biofuels and direct human consumption in supplements and additives. In 2016, juvenile Nile tilapia were given a feed containing dried Schizochytrium in place of fish oil. When compared to a control group raised on regular feed, they exhibited higher weight gain and ...

OPUS at UTS: A new Thraustochytrid, strain Fng1, isolated from the surface mucus of the hermatypic coral Fungia granulosa. -...

OPUS (Open Publications of UTS Scholars) is the UTS institutional repository. It showcases the research of UTS staff and postgraduate students to a global audience. For you, as a researcher, OPUS increases the visibility and accessibility of your research by making it openly available regardless of where you choose to publish.. Items in OPUS are enhanced with high quality metadata and seeded to search engines such as Google Scholar as well as being linked to your UTS research profile, increasing discoverability and opportunities for citation of your work and collaboration. In addition, works in OPUS are preserved for long-term access and discovery.. The UTS Open Access Policy requires UTS research outputs to be openly available via OPUS. Depositing your work in OPUS also assists you in complying with ARC, NHMRC and other funder Open Access policies. Providing Open Access to your research outputs through OPUS not only ensures you comply with these important policies, but increases opportunities ...

Molecular analysis of microbial community structure in open ponds for algal biodiesel production

Algal farming in open ponds can be done with simple technology and low capital expenditures. However, in relatively uncontrolled ponds the likelihood that microbial contamination that could affect algal yield is high. We are interested in understanding natural contamination as an ecological process to better control the trajectory of microbial community assembly. Nannochloropsis salina was grown in small outdoor open ponds (100 L; 10 cm deep) through three cycles of batch culture using a simplified brackish growth medium. Time-course samples were monitored via pigment analyses, and direct microscopic counts. Extracted metagenomic DNA was subjected to touchdown PCR for amplification of 16S rRNA genes with universal bacterial primers and 18S rRNA genes with algae-specific primers, both using GC-clamps. PCR products of similar lengths were separated by melting characteristics using denaturing gradient gel electrophoresis (DGGE). Contamination of the open ponds by algae was not observed over three ...

Gnswamy23's Home

Got an informative article about Nannochloropsis salina when i was surfing at Cleantick.The article discusses various characteristics of the strain such as lipid productivity,photosynthetic efficiency,growth rate etc... Read at:http://www.cleantick.com/users/amandaleah/projects/analysis-of-marine-algae-strains-for-biofuel-production-nannochloropsis-salina more. ...

Ultrastructure of Thraustochytrium sp. zoospores | SpringerLink

The kinetosome-flagellum base of Thraustochytriumsp. has several ultrastructural features that are unique among the fungi studied thus far. Within the lumen formed by the kinetosome fibrils are two...

Vegan Omega-3, 60ct - Zenwise Health

Description: Zenwise Health Vegan Omega-3 are dietary supplements that feature a vegan friendly source of Omega-3 fatty acids derived from Nannochloropsis sp. marine algae. With a high concentration of EPA and DHA, this formula supports joint mobility, immune function, skin care, cognitive activity, and cardiovascular

Milium effusum Aureum Seeds

|div id=full-description| |p class=description| E A Bowles is revered for his knowledge of plants and gardening, and for his ability to spot a worthwhile plant - whether a sport or an unusual variation in the wild. Among the best of the finds that

Microalga Nannochloropsis sp. Biomass for Biodiesel Production: Conventional (Cell Disruption) and in situ Transesterification...

The potential of Nannochloropsis sp. microalga to biodiesel production was assessed. The work deals with the optimization of the cell disruption, a required step when the..

Multimodular type I polyketide synthases in algae evolve by module duplications and displacement of AT domains in trans | BMC...

Clades 4 and 5 contain sequences from protists that are both photosynthetic (algae) and non-photosynthetic. Like clade 3, clade 4 contains iterative type I PKSs with cis-AT domains. It is interesting to note that iterative PKSs from chlorophytes in clade 4 are distant from noniterative PKSs from the same algal phylum (clade 9). Similarly, photosynthetic heterokonts contribute to separate clades: While clade 4 includes iterative PKSs from Nannochloropsis oceanica, clade 8 contains sequences from A. anophagefferens that phylogenetically resemble noniterative PKSs from the haptophyte E. huxleyi, including Aan-sKS5 that is encoded on scaffold 46 (annotated as free-standing KS). This finding further supports the idea that A. anophagefferens contains several type I PKSs. Similar to the clear separation of iterative and noniterative PKSs from algae observed here, iterative and noniterative PKSs from bacteria and fungi also form separate clades [31].. PKSs from the dinoflagellate S. minutum are found in ...

Effect of freshwater microalgae Nannochloropsis limnetica on the rumen fermentation in vitro

It was hypothesised that Nannochloropsis limnetica due to the specific chemical composition and fatty acids profile, may positively affect rumen fermentation. To confirm this hypothesis the batch culture experiment was conducted to evaluate N. limnetica supplemented at 0, 2, 4 and 6% of the...

Effect of freshwater microalgae Nannochloropsis limnetica on the rumen fermentation in vitro

It was hypothesised that Nannochloropsis limnetica due to the specific chemical composition and fatty acids profile, may positively affect rumen fermentation. To confirm this hypothesis the batch culture experiment was conducted to evaluate N. limnetica supplemented at 0, 2, 4 and 6% of the...

FAME Production and Fatty Acid Profiles from Moist Chlorella sp. and Nannochloropsis oculata Biomass | SpringerLink

In the present study, we investigated the production of fatty acid methyl esters (FAME) from moist Chlorella sp. and Nannochloropsis oculata biomass using a hydrolysis-esterification process. Addition

DIGITAL.CSIC: Distribution and abundance of uncultured heterotrophic flagellates in the world oceans

Heterotrophic flagellates play fundamental roles in marine ecosystems as picoplankton grazers. This recognized importance contrasts with our ignorance of the taxonomic composition of this functional group, which remains mostly unidentified by microscopical and culturing approaches. Recent molecular marine surveys based on 18S rDNA genes have retrieved many sequences unrelated to cultured organisms and marine stramenopiles were among the first reported uncultured eukaryotes. However, little is known about the organisms corresponding to these sequences. Here we determine the abundance of several marine stramenopile lineages in surface marine waters using molecular probes and fluorescent in situ hybridization. We show that these protists are free-living bacterivorous heterotrophic flagellates. They were widely distributed, occurring in the five world oceans, and accounted for a significant fraction (up to 35%) of heterotrophic flagellates in diverse geographic regions. A single group, MAST-4, ...

Harmful algae found in Northport waters | Newsday

Researchers studying the waters of Northport Harbor say theyve found a type of harmful algae in the water never seen before at these levels in New York. The algae, Dinophysis acuminata, produces a to

Screening of Microalgae for Feasible Mass Production in Industrial Hypersaline Wastewater Using Disposable Bioreactors - Menke ...

200 g L−1). A successful algal biotechnology mainly depends on choosing and screening the adequate algae for a specific application along with the design of optimal culture conditions with comparable photo bioreactor technologies. Therefore, a high throughput screening technology was developed. In comparison to glass flasks or flat panel reactors this system was eligible for screening applications because of disposable characteristics and the equability of each culture tube. Dunaliella salina, Tetraselmis tetrathele, and Nannochloropsis salina grew in the presence of hypersaline wastewater where T. tetrathele grew best to a wastewater concentration of 75% by salt shock experiments. D. salina tolerates a wastewater level up to 80% by gradual increase. Intracellular ion contents of lyophilized algae samples were measured. They feature special transporter to either exclude ions, i.e., sodium from the cell, or to include ions like potassium and magnesium in order to secure functionality of ...

Biochemical engineering: Waste not, want not

The researchers have pioneered a two-step biochemical process that converts lipid-depleted biomass into lactic acid. This substance is in increasing demand as a feedstock for polylactic acid (PLA), a biopolymer with numerous medical applications, ranging from surgical sutures to orthopedic implants. The high cost of raw materials used in the manufacture of lactic acid currently limits PLA use. Thus, producing an alternative source from algal lipid-extraction waste is proving attractive. Generating two valuable products from the algae, specifically the microalgae Nannochloropsis salina, would spread the costs of microalgae production, making the biofuel more cost-competitive with conventional fuels ...

Internasional

A. Yuniarti, N. B. Arifin, M. Fakhri and A, M. Hariati. Biomass and pigment production of microalga Nannochloropsis sp. under different salinities and light intensities. The 9th Asia-Pacific Conference on Algal Biotechnology: Algae for Food, Feed, Fuel and Beyond, 15-18 November 2016, Bangkok, Thailand ...

Harmful algae and their potential impacts on the coastal ecosystem: growth and toxin production dynamics

The main goal of the present thesis was to study some harmful algal species which cause blooms in Italian coastal waters, leading to consequences for human health, coastal ecosystem, fishery and tourism. In particular, in the first part of this thesis the toxicity of Adriatic strains of the raphidophyte Fibrocapsa japonica was investigated. Despite several hypotheses have been proposed for the toxic mechanism of the raphidophytes, especially for the species Chattonella antiqua and C. marina, which have been studied more extensively, just a few studies on the toxic effects of these species for different organisms were reported. Moreover, a careful reading of the literature evidenced as any ichthyotoxic events reported worldwide can be linked to F. japonica blooms. Although recently several studies were performed on F. japonica strains from the USA, Japan, Australia, New Zealand, the Netherlands, Germany, and France in order to characterize their growth and toxicity features, the work reported in ...

Methionine synthesis in Ochromonas malhamensis | Biochemical Journal

Thank you for your interest in spreading the word about Biochemical Journal.. NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.. ...

Marine Parasitology by Klaus Rohde - Lanzhieron Books

5 µm wide) with two laterally attached flagella. The anterior flagellum (about 12 µm in length) has a brush of mastigonemes along one side and the posterior flagellum (5-10 µm in length) is glabrous and has a tapered tip (Bower 1987a). The most characteristic feature of thraustochytrids is a unique organelle called the sagenogenetosome (bothrosome or sagenogen) on the cell surface from which arises the ectoplasm net consisting of a unit membrane tube containing no cell organelles (Fig. 3C). In the sagenogenetosome an electron-dense plug separates the cell cytoplasm from the ectoplasmic network. Inset: Scanning electron micrograph of spore of H. pickfordi illustrating the spore lid and spore ornamentation originating from the aboral end. Scale bar = 2 µm. Reproduced from Burreson, EM, Spore ornamentation of Haplosporidium pickfordi Barrow, 1961 (Haplosporidia), a parasite of freshwater snails in Michigan, USA, Journal of Eukaryotic Microbiology 48(6): 622-626, with permission of the ...

Inter Research » AME » v81 » n1 » p83-94

ABSTRACT: High-throughput sequencing techniques have been increasingly used in biodiversity estimates and in the detection of rare species within prokaryotic and eukaryotic assemblages in different habitats. In studies of protists, the V4 region of the 18S rRNA gene is the genetic marker most often used. However, established primers for the variable region V4 show several mismatches when used to examine protist groups important in oxygen-deficient aquatic systems, such as euglenozoans, some stramenopiles, and ciliates (e.g. mesodiniids). In this study, we designed new general primers covering the V4 and V5 region and used them in combination with a primer mix in a 2-step PCR approach to improve our understanding of eukaryotic diversity in oxygen-deficient zones. Prior to amplification of environmental samples from oxygen-deficient water layers of the Black Sea, we tested and improved the protocol on a protist mock community (1 ciliate and 5 flagellate species). With the developed approach, we ...

CAZy - Bacteria

Lineage: cellular organisms; Eukaryota; Sar; Stramenopiles; Oomycota; Peronosporales; Peronosporaceae; Phytophthora; Phytophthora ...

Deep-Sea Environmental Sample Processor | MBARI

At prearranged times or when triggered by another sensor, the ESP filters 2-L (a half-gallon) of seawater into its metal-alloy housing. The sample is washed and treated with chemicals that break down cell membranes. The freed cell contents are then washed over a wafer and passed to a series of robotic devices.. Within these devices is where the molecular chemistry happens. Standard tests detect gene products and answer specific questions: By detecting specific RNA sequences, the system can find out which organisms are present. Or, by testing for particular proteins, it can ask what those organisms are doing. (For example, an RNA test can look for a particular kind of harmful algae; a protein test can learn how much toxin it is producing.). In surface waters, these tests are useful for monitoring algae and bacteria populations. They can also identify larger creatures such as mussel and barnacle larvae, helping biologists piece together normally hidden parts of these animals life cycles.. The ...

https://www.bionews.org.uk/page 95416

Researchers have found that mimiviruses, a class of giant viruses, have an immune system reminiscent of the CRISPR system used by bacteria to evade infection.. As CRISPR has been adapted by scientists as a powerful genome-editing tool, the finding raises the possibility that this newly discovered system - dubbed MIMIVIRE - could be harnessed in a similar way.. Mimiviruses were first discovered by the same team of researchers 13 years ago. They are around four times the size of other viruses like HIV or influenza and can contain hundreds more genes.. A few years ago, the researchers, led by Professor Didier Raoult of Aix-Marseille University in France, found that a type of virophage (a virus that infects other viruses) could infect mimiviruses and stop them replicating. However, some types of mimivirus were resistant to virophage infection.. Professor Raoult and his team suspected this resistance might have its origins in an immune system similar to that found in bacteria. CRISPR sequences are a ...

tex-live] getnonfreefonts

We are talking about fonts that have already been packaged - this is about installation and not packaging for TeX. Paulo Ney On Tue, Apr 12, 2016 at 5:38 PM, Norbert Preining ,preining at logic.at, wrote: , , elsewhere) which are not available on TL. This is vexing because the , , technology to make these installs a single command line like ... , , , , font-install Antiqua , , $ font-install Antiqua , bash: font-install: command not found , , I dont know what you are talking about that super simple font , installation, but I can guarantee you - and I have packaged a lot of , fonts - that font installation cross platform is not trivial. , , Norbert , , ------------------------------------------------------------------------ , PREINING, Norbert http://www.preining.info , JAIST, Japan TeX Live & Debian Developer , GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13 , ------------------------------------------------------------------------ , -------------- next part -------------- ...

TWiV 125: TWiV infects FiB | This Week in Virology

This Week in Virology and Futures in Biotech join together in a science mashup to talk about a virophage at the origin of DNA transposons, and unintended spread

Altruistic viruses

A virophage called mavirus has been found to integrate into the genome of its host and behaves like an inducible antiviral defense system.

sputnik - Living the Scientific Life (Scientist, Interrupted)

tags: virology, mimivirus, sputnik, virophage, microbiology, molecular biology Now heres an astonishing discovery thats hot off the presses: a virus that infects other viruses! This amazing finding is being published tomorrow in the top-tier peer-reviewed journal, Nature.. ...

Millarium | OpenBuildings

Coordinates: 41°53′33″N 12°29′04″E / 41.8925°N 12.48444°E / 41.8925; 12.48444The Milliarium Aureum (Classical Latin: , golden milestone) was a monument, probably of gilded bronze, erected by the Em…

BJP National committee member dead | india | Hindustan Times

BJP National Council member, T M V Shenoy, died in Kochi on Tuesday, family sources said. He was 83 and leaves behind wife,four daughters and son.

Turkish Journal of Fisheries and Aquatic Sciences

2 Pusan National University, School of Medicine, Department of Parasitology, Yangsan-si Gyeongsangnam-do 626-870, Republic of Korea DOI : 10.4194/1303-2712-v18_4_08 Viewed : 1516 - Downloaded : 225 Two experiments were conducted to investigate the effects on growth, survival and anti-inflammatory cytokine (Interleukin-10) using with Nannochloropsis concentration in diets of sea cucumber Apostichopus japonicus. In the first experiment, 60 days feeding trail was conducted to evaluate the growth performance and survival of the sea cucumber fed on six experimental diets containing different inclusion level of Nannochloropsis oculata (0%, 2%, 4%, 6%, 8%, 10%) in recirculating aquaculture system. Specific growth rate (SGR) and food conversion efficiency (FCE) of sea cucumber fed diet containing 8% Nannochloropsis oculata algae was significantly higher than that of other diets ( ...

Researchers predict smaller harmful algae bloom on Lake Erie - Urbana Daily Citizen

PUT-IN-BAY, Ohio (AP) - Potentially toxic algae is expected to form again this summer in western Lake Erie but should be considerably less severe than the blooms that blanketed the lake and threatened drinking water supplies the previous two years, scientists said Thursday.. After three wet springs, the regions rainfall was more normal this year, said Richard Stumpf of the National Oceanographic and Atmospheric Administration. That means less phosphorus from farms and sewage treatment plants has washed into the Maumee River and other tributaries that discharge into the lake, feeding harmful algae.. "With a return to average spring discharge, and much lower river flow in June than in the recent years, the western basin should look better," said Stumpf, of NOAAs National Centers for Coastal Ocean Science and the agencys top Lake Erie algae forecaster.. Even so, a bloom of mild to moderate size is likely to show up late this month, reach its peak size in August and possibly linger into October, ...

ICHA - The 17th International Conference on Harmful Algae Brasil 2016

The 17th edition of the International Conference on Harmful Algae (ICHA) will be held in the city of Florianópolis, state of Santa Catarina, Brazil from October 9th to 15th 2016. Registrations and Abstract submissions are open. Get ready!

Streptomyces Alboflavus RPS and its Novel and High Algicidal Activity Against Harmful Algal Bloom Species Phaeocystis globosa |...

Due to these severe negative effects, a number of strategies have been proposed to control HABs, involving ultraviolet light, microwave, clay, modified sand, plants, protozoan, and Chinese traditional medicines. However, only a few of these are feasible and applicable in case of emergencies due to the high cost or side effects. In recent years, microbial agents mitigating HABs, especially naturally occurring algicidal bacteria have attracted global attention.. Algicidal bacteria play a potentially important role in regulating the growth, metabolism, and toxin production of harmful algae. Factually, relationships between algicidal bacteria and harmful algae are quite complex and have been extensively researched, of which the most conspicuous and important is the inhibition or lysis of harmful algae by algicidal bacteria. Consequently, plenty of algicidal bacteria which mainly belong to genera Pseudoalteromonas, Alteromonas, Vibrio, Cytophaga, and Saprospira were isolated. The negative effects of ...

Getting to the point (mutations) in re-engineering biofuel-producing bacterial enzymes | Science Codex

WASHINGTON, D.C., Sept. 13, 2017 -- Converting fibrous plant waste, like corn stalks and wood shavings, into fermentable simple sugars for the production of biofuel is no simple process. Bacteria must break down tough leaves, stems and other cellulosic matter resistant to degradation to turn them into usable energy.. Helping bacteria become more efficient in this process could result in more affordable biofuels for our gas tanks and sustainable products such as bioplastics. One way to achieve this goal is to re-engineer the bacterial enzyme complexes, called cellulosomes, which serve as catalysts in the degradation process. In an effort to produce these so-called designer cellulosomes, the international research consortium CellulosomePlus is developing methods to enhance the efficiency of this complex engineering process to make it economically feasible and effective. Consortium researchers from Spain, Poland and Ireland reported their findings for one method recently in The Journal of Chemical ...

facts around us: Sea slugs facts | Australia slugs picture | Sea slug species

Sea slug name for a marine gastropod mollusk that lacks a shell as an adult and is usually brightly colored. Australias Sea slugs, or nudibranchs, are distributed throughout the world, with the greatest numbers and the largest kinds found in tropical waters. They creep along the bottom or cling to submerged vegetation, usually in water just below the low tide line. Members of a few species swim on the surface in open ocean. Most sea slugs are under 1 in. (2.5 cm) long, although the largest, found in the Great Barrier Reef of Australia, reaches 12 in. (30 cm). Regarded by many people as the most beautiful of marine animals, sea slugs display a great array of solid colors and patterns. Many have feathery structures (ceratia) on the back, often in a contrasting color. Australia sea slugs have two pairs of tentacles on the head, used for tactile and chemosensory reception, with a small eye at the base of each tentacle. Sea slugs graze on small sessile animals such as coelenterates, sponges, and ...

PRIME PubMed | Replacement of fish oil with a DHA-rich algal meal derived from Schizochytrium sp. on the fatty acid and...

PubMed journal article: Replacement of fish oil with a DHA-rich algal meal derived from Schizochytrium sp. on the fatty acid and persistent organic pollutant levels in diets and flesh of Atlantic salmon (Salmo salar, L.) post-smolts. Download Prime PubMed App to iPhone, iPad, or Android

carbon flux

Last week we discussed the second known virophage, but we didnt have any explanation of why such viruses might evolve. This week we have the discovery of a third virophage, hints of many more, and a hypothesis for what they might be doing in the global ecosystem.. The newest virus eater is called Organic Lake virophage (OLV), for the body of water in Antarctica where it was identified. Antarctic Lakes are well suited for metagenomic analyses (nucleotide sequences produced from environmental samples) because they are dominated by microbes and typically sustain few multicellular eukaryotes. For example, a metagenomic study of Lake Limnopolar, another Antarctic lake, revealed many novel eukaryotic and ssDNA viruses.Nucleotide sequence analysis of water samples taken from Organic Lake in 2006 and 2008 revealed the presence of three abundant phycodnaviruses. These are large, dsDNA-containing viruses that infect algae. Among the sequences was a novel virophage, called Organic Lake virophage (OLV), ...

Nutrient pollution: Voluntary steps are failing to shrink algae blooms and dead zones - Gulf Hypoxia

Summer is the season for harmful algae blooms in many U.S. lakes and bays. They occur when water bodies become overloaded with nitrogen and phosphorus from farms, water treatment plants and other sources. Warm water and lots of nutrients promote rapid growth of algae that can be toxic and potentially fatal to aquatic life and people.. Eventually algae settle to the bottom and decay, depleting dissolved oxygen in the water, creating hypoxia - "dead zones" where oxygen levels are low enough to kill fish.. As a senior scientist at the National Oceanographic and Atmospheric Administration between 1975 and 2003, I developed annual hypoxia forecasts for the Chesapeake Bay and the Gulf of Mexico - two of our nations water bodies most harmed by these blooms. At the University of Michigan, I helped develop harmful algae bloom forecasts for Lake Erie and continue to work with public and private organizations on these issues.. States around Lake Erie and in the Mississippi River basin, which drains to the ...

Discover the cause of the harmful algae bloom impacting the gulf | WHNT.com

Beaches in Mississippi have closed because of an algae outbreak. Now it could be impacting people in Alabama too. Its important to note that the bloom has not shut down beaches or fishing along the Alabama coast, but officials are warning against eating fish and seafood from surrounding areas.

Department of Biological and Environmental Sciences, University of Gothenburg, 2015 - nordicsouthasianet.eu

The second PhD candidate, Alin Kadfak, supervised by Dr. Per Knutsson, School of Global Studies, and focus on societal changes taking place along the Indian west coast due to effects of the blooming of toxic algae and bacteria in the sea.Sri Lanka projectIn November 2012 Dr. Godhe together with collaboration partner Darshanee Ruwandeepika, Sabaragamuwa University of Sri Lanka, received a Swedish Research Links (Asian-Swedish research partnership programme) grant on SEK 750 000 for the project "Climate induced changes in the pelagic microbial communities: assessing the response of harmful algae and pathogenic bacteria in coastal water of Sri Lanka".See the full list of South Asia related projects given Swedish Research Links grants 2012.Abstract: The project aims to understand how climate-induced changes in hydrography will affect species of harmful algae, pathogenic bacteria and the inter-relation between those. This will be done by initially isolating relevant species from Sri Lankan coastal ...

Western CEDAR - Salish Sea Ecosystem Conference: A dangerous mix: Strain, dosage, and environment increase virulence of...

Seagrass wasting disease, caused by the opportunistic marine pathogen Labyrinthula zosterae, has the potential to devastate important eelgrass habitats worldwide, yet little is known about the host-pathogen interaction and how the disease will be impacted by climate change. L. zosterae is part of a diverse taxon of opportunistic invertebrate and plant pathogens, which directly threaten fisheries and critical fisheries habitat. An area of particular concern is the role of virulence, the degree of host damage caused by a pathogen, often the product of its growth rate. Recent data suggests that temperature increases the virulence of Labyrinthulas, providing a mechanism for climate sensitivity. In this study we investigate the effect of L. zosterae strain, pathogen dosage, and temperature on the pathogen virulence. We tested L. zosterae virulence in Zostera marina by inoculating plant tissue with strains collected from a range of eelgrass populations. The 11 strains tested displayed qualitatively different

Self-Destructing Bacteria Could Be the Key to Better Biofuels | Inhabitat - Green Design, Innovation, Architecture, Green...

Normally we dont advocate self-destruction, but in the case of biofuel-producing bacteria, it might be a good thing. Researchers at Arizona State University have genetically engineered cyanobacteria

Parasitic Protists

Many of the parasites which have the greatest effect on our collective health and economy, and which have influenced the fates of nations, are protists. Most significantly, they include the agents of sleeping sickness and malaria. Sleeping sickness is caused by a kinetoplastid flagellate. The direct impact of sleeping sickness on humans is now much reduced, but in the 19th century, it wreaked destruction in Africa, facilitated by ill-informed moralistically motivated colonialists (Ford 1971). Malaria, caused by Plasmodium - an apicomplexan alveolate - remains the number one infectious disease affecting people.. Protists embrace many species which are found within invertebrate and vertebrate animals, within plants, or even within other protists. Some of these endobionts are clearly pathogenic, but the nature of the relationship between others seem to be more benign. At one end of the spectrum Phytophthora, a stramenopile, levels large tracts of native woodlands of Australia by invading the ...

WoRMS - World Register of Marine Species - Clausia antiqua Kim I.H., 2001

Walter, T. Chad (2009). Clausia antiqua Kim I.H., 2001. In: Walter, T.C. & Boxshall, G. (2017). World of Copepods database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=361864 on 2017-11- ...

Mutina Ars Antiqua egyptian art, etruscan art, roman art, near east, greek art, ancient art, antiquities, antiquities sell,...

Mutina Ars Antiqua deals with the antiquities sector and, in particular, offers artefacts of archaeological interest directly on the Internet. We offer our services in authentication , appraisals, professional restoration and Scientific analysis test

WoRMS - World Register of Marine Species - Haloguignardia oceanica (Ferd. & Winge) Kohlm., 1971

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- ...

Anke Kremp - Publications - IOW

Sildever, S., J. Jerney, A. Kremp, H. Oikawa, S. Sakamoto, M. Yamaguchi, K. Baba, A. Mori, T. Fukui, T. Nonomura, A. Shinada, H. Kuroda, N. Kanno, L. Mackenzie, D. M. Anderson and S. Nagai (2019). Genetic relatedness of a new Japanese isolates of Alexandrium ostenfeldii bloom population with global isolates. Harmful Algae 84: 64-74, doi: 10.1016/j.hal.2019.02.005 ...

Synonyms for Acrostichum aureum | Synonym.com

stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides. ...

Application of the microalga Plagioselmis prolonga for the assessment of water quality in the Amursky and Nakhodka Bays (Sea of...

Read "Application of the microalga Plagioselmis prolonga for the assessment of water quality in the Amursky and Nakhodka Bays (Sea of Japan), Russian Journal of Marine Biology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

ABRAU ANTIQUA | Horses of Hillfeet

Despite the fact that among the kitchen waste in the settlements of the peninsula the horse bones are found in a minimal amount, arheozoologists find these

FAO Fisheries & Aquaculture - Publications

http://www.fao.org/fi/eims_search/simple_s_result_1252.asp?querystring=Sturisomatichthys%20aureum&owner=fi&xml=y&xml_no_subject=y&FORM_C=AND&sortorder=3 ...

The Sea Slug Forum - Tylodina perversa

While preparing Ferdas message I thought this summary of research on chemical defence in tyloperv.htm Tylodina perversa and its food sponge would be of interest.Prof. Prokschs group at the Heinrich-Heine-Universi

The Sea Slug Forum - Chromodoris naiki

chronaik.htm Chromodoris naiki is characterized internally by having the buccal mass divided evenly into an anterior glandular portion and a posterior muscular one. At the posterior end of the mass there are a pair of large, elongate salivar

Radio Študent

Nvm, začetne predpostavke so bolj kr neki, al kaj. A zdej ne smem imet mnenja proti vladi, če ni moja omiljena opcija al kaj. ...

Kivvi Body Marmalade Yellow Rose kehamarmelaad 120 ml

Kivvi looduskosmeetika kehamarmelaad kollane roos niisutab nahka sügavuti, toidab ja tugevdab seda. Sisaldab kookoseõli, mis parendab naha loomulikku päevitumisvõimet. Sobib igapäevaseks nahahoolduseks

Docman files - Lymphoma Coalition

The Lymphoma Coalition is a global network of worldwide not for profit lymphoma patient organizations with a Vision to free the world of lymphomas.