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Zooxanthella Nutricula
Zooxanthellae (; zooxanthella) is a colloquial term for single-celled photosynthetic organisms that are able to live in symbiosis with diverse marine invertebrates including corals, jellyfish, demosponges, and nudibranchs. Most known zooxanthellae are in the dinoflagellate genus ''Symbiodinium'', but some are known from the genus '' Amphidinium'', and other taxa, as yet unidentified, may have similar endosymbiont affinities. "Zooxanthella" was originally a genus name (meaning literally "little yellow animal") given in 1881 by Karl Brandt to '' Zooxanthella nutricula'' (a mutualist of the radiolarian '' Collozoum inerme'') which has been placed in the Peridiniales. Another group of unicellular eukaryotes that partake in similar endosymbiotic relationships in both marine and freshwater habitats are green algae zoochlorellae. Zooxanthellae are photosynthetic organisms, which contain chlorophyll a and chlorophyll c, as well as the dinoflagellate pigments peridinin and diadinoxanthi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peridiniales
Peridiniales is an order of dinoflagellates. Families Species accepted by the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ... as of December 2023: *'' Archaesphaerodiniopsidaceae'' *'' Centrodiniaceae'' *'' Ceratocorythaceae'' *'' Ceratoperidiniaceae'' *'' Congruentidiaceae'' *'' Crypthecodiniaceae'' *'' Deflandreaceae'' *'' Dinosphaeraceae'' *'' Glenodiniaceae'' *'' Glenodiniopsidaceae'' *'' Heterocapsaceae'' *'' Kolkwitziellaceae'' *'' Kryptoperidiniaceae'' *'' Lessardiaceae'' *'' Oxytoxaceae'' *'' Peridiniaceae'' *'' Peridiniopsidaceae'' *'' Phthanoperidiniaceae'' *'' Podolampaceae'' *'' Podolampadaceae'' *'' Protoperidiniaceae'' *'' Thecadiniaceae'' References External linksPicture of a Peridiniale Dinophyceae Dinofl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prorocentrales
The Prorocentrales are a small order of dinoflagellates. They are distinguished by having their two flagella inserted apically, rather than ventrally as in other groups. One flagellum extends forward and the other circles its base, and there are no flagellar grooves. This arrangement is called desmokont, in contrast to the dinokont arrangement found in other groups. Accordingly, the Prorocentrales may be called desmoflagellates, and in some classifications were treated as a separate class Desmophyceae. All members have chloroplast A chloroplast () is a type of membrane-bound organelle, organelle known as a plastid that conducts photosynthesis mostly in plant cell, plant and algae, algal cells. Chloroplasts have a high concentration of chlorophyll pigments which captur ...s and a theca, which is composed of two large plates joined by a sagittal suture. This structure is shared with the Dinophysiales, and they are probably sister groups. This does not show up on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyrodinium
''Gyrodinium'' is a genus of dinoflagellates belonging to the order Gymnodiniales within class Dinophyceae. The genus has cosmopolitan distribution. World Register of Marine Species lists 141 species, with many synonyms. They are heterotrophic (cannot produce its own food) and feed on diatoms (such as ''Chaetoceros debilis'') that can be up to 12 times their length. They are 'naked' dinoflagellates, meaning they lack armor (or cellulosic plates). Species 54 species, as accepted by the GBIF: *'' Gyrodinium aciculatum'' *'' Gyrodinium ascendans'' *'' Gyrodinium aureum'' *'' Gyrodinium britannicum'' *'' Gyrodinium calyptoglyphe'' *''Gyrodinium calyptroglyphe'' *'' Gyrodinium capsulatum'' *'' Gyrodinium carteretensis'' *'' Gyrodinium caudatum'' *''Gyrodinium citrinum'' *''Gyrodinium cochlea'' *''Gyrodinium complanatum'' *''Gyrodinium corallinum'' *''Gyrodinium crassum'' *''Gyrodinium dominans'' *''Gyrodinium estuariale'' *''Gyrodinium falcatum'' *''Gyrodinium ferrugineum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnodinium
''Gymnodinium'' is a genus of dinoflagellates, a type of marine and freshwater plankton. It is one of the few naked dinoflagellates, or species lacking armor known as cellulosic plates. Since 2000, the species which had been considered to be part of ''Gymnodinium'' have been divided into several genera, based on the nature of the apical groove and partial LSU rDNA sequence data. '' Amphidinium'' was redefined later. Gymnodinium belong to red dinoflagellates that, in concentration, can cause red tides. The red tides produced by some ''Gymnodinium'', such as '' Gymnodinium catenatum'', are toxic and pose risks to marine and human life, including paralytic shellfish poisoning. Segregate genera *''Gymnodinium'' sensu stricto *'' Akashiwo'' *'' Amphidinium'' *'' Gyrodinium'' *'' Karenia'' *'' Karlodinium'' *'' Katodinium'' Former species ''Torodinium'' (with ''Torodinium robustum'' and the type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Algae
Red algae, or Rhodophyta (, ; ), make up one of the oldest groups of eukaryotic algae. The Rhodophyta comprises one of the largest Phylum, phyla of algae, containing over 7,000 recognized species within over 900 Genus, genera amidst ongoing taxonomic revisions. The majority of species (6,793) are Florideophyceae, and mostly consist of multicellular, ocean, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, no terrestrial species exist, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. Red algae form a distinct group characterized by eukaryotic cells without flagella and centrioles, chloroplasts without external endoplasmic reticulum or unstack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinophyceae
Dinophyceae is a class of dinoflagellates. Taxonomy * Class Dinophyceae Pascher 1914 [Peridinea Ehrenberg 1830 stat. nov. Wettstein; Blastodiniphyceae Fensome et al. 1993 orthog. emend.] ** Order Haplozoonales [Haplozooidea Poche 1913] *** Family Haplozoonaceae Chatton 1920 ** Order Akashiwales *** Family Akashiwaceae ** Order Blastodiniales Chatton 1906 [Blastodinida Chatton 1906] *** Family Blastodiniaceae Cavers 1913 ** Order Apodiniales *** Family Apodiniaceae Chatton 1920 ** Order Dinotrichales Pascher 1914 *** Family Crypthecodiniaceae Biecheler 1938 ex Chatton 1952 *** Family Dinotrichaceae Pascher 1914 ** Order Phytodiniales T. Christ. 1962 ex Loeblich 1970 [Dinococcales Pascher 1914; Suessiales Fensome & al. 1993; Dinamoebales] *** Family †Suessiaceae Fensome et al. 1993 *** Family Phytodiniaceae Klebs 1912 [Dinococcaceae Fott 1960; Hemidiniaceae Bourrelly 1970; Borghiellaceae Moestrup, Lindberg & Daugbjerg 2009] *** Family Symbiodiniaceae Fensome & al. 1993 [Zooxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptophyceae
The cryptophyceae are a class of algae, most of which have plastids. About 230 species are known, and they are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, with an anterior groove or pocket. At the edge of the pocket there are typically two slightly unequal flagella. Some exhibit mixotrophy. Characteristics Cryptophytes are distinguished by the presence of characteristic extrusomes called ejectosomes or ejectisomes, which consist of two connected spiral ribbons held under tension. If the cells are irritated either by mechanical, chemical or light stress, they discharge, propelling the cell in a zig-zag course away from the disturbance. Large ejectosomes, visible under the light microscope, are associated with the pocket; smaller ones occur underneath the periplast, the cryptophyte-specific cell surrounding. Except for '' Chilomonas'', which has leucoplasts, cryptophytes have one or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatom
A diatom (Neo-Latin ''diatoma'') is any member of a large group comprising several Genus, genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of Earth's Biomass (ecology), biomass. They generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion tonnes of silicon each year from the waters in which they live, and constitute nearly half of the organic material found in the oceans. The Protist shell, shells of dead diatoms are a significant component of marine sediment, and the entire Amazon basin is fertilized annually by 27 million tons of diatom shell dust transported by transatlantic winds from the African Sahara, much of it from the Bodélé Depression, which was once made up of a system of fresh-water lakes. Diatoms are unicellular organisms: they occur either as solitary cells or in Colony (biology), colonies, which can take the shape of ribb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Applied And Environmental Microbiology
''Applied and Environmental Microbiology'' is a biweekly peer-reviewed scientific journal published by the American Society for Microbiology. It was established in 1953 as ''Applied Microbiology'' and obtained its current name in 1975. Articles older than six months are available free of cost from the website, however, the newly published articles within six months are available to subscribers only. According to the ''Journal Citation Reports'', the journal has a 2023 impact factor of 3.9. The journal has been ranked as one of the top 100 journals over the past 100 years in the fields of biology and medicine. Special Libraries Association100 Journals in last 100 years/ref> The editor-in-chief is Gemma Reguera (Michigan State University Michigan State University (Michigan State or MSU) is a public university, public Land-grant university, land-grant research university in East Lansing, Michigan, United States. It was founded in 1855 as the Agricultural College of the State o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diadinoxanthin
Diadinoxanthin is a pigment found in phytoplankton. It has the formula C40H54O3. It gives rise to the xanthophylls diatoxanthin and dinoxanthin. Diadinoxanthin is a plastid pigment. Plastid pigments include chlorophylls a and c, fucoxanthin, heteroxanthin, diatoxanthin, and diadinoxanthin. Diadinoxanthin is a carotenoid. It is found in diatoms, along with other carotenoids like fucoxanthin and beta-carotene. Diatoms are referred to as golden-brown microalgae because of the color of their plastids and because the carotenoids mask chlorophyll-a and chlorophyll-c. Diadinoxanthin is a xanthophyll. Xanthophyll pigments are photoprotective pigments that help protect cells from harmful effects of too much light energy (light saturation). It is present in cells along with diatoxanthin (another xanthophyll). Diadinoxanthin is stockpiled in the cell to become available when needed. Thus it is the inactive precursor of diatoxanthin, which is the active energy dissipator. See also * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peridinin
Peridinin is a light-harvesting apocarotenoid, a pigment associated with chlorophyll and found in the peridinin-chlorophyll-protein (PCP) light-harvesting complex in dinoflagellates, best studied in '' Amphidinium carterae''. Biological significance Peridinin is an apocarotenoid pigment that some organisms use in photosynthesis. Many photosynthetic dinoflagellates use peridinin, which absorbs blue-green light in the 470–550 nm range, outside the range accessible to chlorophyll molecules. The peridinin-chlorophyll-protein complex is a specialized molecular complex consisting of a boat-shaped protein molecule with a large central cavity that contains peridinin, chlorophyll, and lipid molecules, usually in a 4:1 ratio of peridinin to chlorophyll. Spectral characteristics * Absorption maximum: 483 nm * Emission maximum: 676 nm * Extinction coefficient (ε): 1.96 x 106 M−1cm−1 * A483/A280 ≥ 4.6 Applications Peridinin chlorophyll (PerCP) is commonly used in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
