Pelagophyceae
Pelagophycidae is a subclass (biology), class of heterokont algae.It is the sister group of the axodines. Together, they form the class Dictyochophyceae. All known species are marine. They can be single-celled (Coccus, coccoid or flagellate), palmelloid or filamentous. Some members (''Pelagomonas'') belong to picoplankton, and some other (''Sarcinochrysis'') are macroscopic attached organisms. The subclass contains 13 genera, 3 families and 2 orders (2017): * Order Pelagomonadales Andersen & Saunders 1993 ** Family Pelagomonadaceae Andersen & Saunders 1993 *** genus ''Ankylochrysis'' Billard 1995 *** genus ''Aureococcus'' Hargraves & Sieburth 1988 *** genus ''Chrysophaeum'' Lewis & Bryan 1941 non Taylor 1951 *** genus ''Pelagococcus'' Norris 1977 *** genus ''Pelagomonas'' Andersen & Saunders 1993 * Order Sarcinochrysidales Gayral & Billard 1977 ** Family Chrysocystaceae Melkonian, Yoon & Andersen 2018 *** genus ''Chrysocystis'' Lobban, Honda & Chihara 1995 *** genus ''Chrysoreinh ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Pelagomonas
''Pelagomonas'' is a genus of heterokont algae. It is a monotypic genus and includes a single species, ''Pelagomonas calceolata'' which is a unicellular flagellate organism, an ubiquitous constituent of marine picoplankton. It is an ultra-planktonic marine alga. Description ''Pelagomonas calceolata'' is flagellum, uniflagellate, about 1.5 × 3 micrometre, μm in size. Microtubular roots, striated roots and a second basal body are absent. A thin organic theca surrounds most of the cell. There is a single chloroplast with a girdle Lamella (cell biology), lamella and a single, dense mitochondrion with tubular cristae. A single Golgi body with swelled cisternae lies beneath the flagellum, and each cell has an ejectile organelle that putatively releases a cylindrical structure. A vacuole, or cluster of vacuoles, contains the putative carbohydrate storage product. References Further reading *Heimann, Kirsten, Andersen, Robert A., and Wetherbee, Richard (1995) The flagellar developmen ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Dictyochophyceae
Dictyochophyceae sensu lato is a photosynthetic lineage of heterokont algae. Taxonomy * Class Dictyochophyceae Silva 1980 s.l. ** Subclass Sulcophycidae Cavalier-Smith 2013 *** Order Olisthodiscales Cavalier-Smith 2013 **** Family Olisthodiscaceae Cavalier-Smith 2013 *** Order Sulcochrysidales Cavalier-Smith 2013 **** Family Sulcochrysidaceae Cavalier-Smith 2013 ** Subclass Alophycidae Cavalier-Smith 2006 ictyochia Haeckel 1894 sensu Cavalier-Smith 1993*** Infraclass Pelagophycia Andersen & Saunders 1993 emend. 1995 stat. nov. elagophyceae Andersen & Saunders 1993**** Order Pelagomonadales Andersen & Saunders 1993 ***** Family Pelagomonadaceae Andersen & Saunders 1993 **** Order Sarcinochrysidales Gayral & Billard 1977 ***** Family Sarcinochrysidaceae Gayral & Billard 1977 *** Infraclass Actinochrysia Cavalier-Smith 1995 stat. nov. 2006 (Axodines Patterson, 1994; Actinochrysea Cavalier-Smith 1995; Actinochrysophyceae Cavalier-Smith 1995; Dictyochophyceae Silva 1980 emen ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Heterokont
Heterokonts are a group of protists (formally referred to as Heterokonta, Heterokontae or Heterokontophyta). The group is a major line of eukaryotes. Most are algae, ranging from the giant multicellular kelp to the unicellular diatoms, which are a primary component of plankton. Other notable members of the Stramenopiles include the (generally) parasitic oomycetes, including ''Phytophthora'', which caused the Great Famine of Ireland, and ''Pythium'', which causes seed rot and damping off. The name "heterokont" refers to the type of motile life cycle stage, in which the flagellated cells possess two differently arranged flagella (see zoospore). History In 1899, Alexander Luther created the term "Heterokontae" for some algae with unequal flagella, today called Xanthophyceae. Later, some authors (e.g., Copeland, 1956) included other groups in Heterokonta, expanding the name's sense. The term continues to be applied in different ways, leading to Heterokontophyta being applie ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Aureoumbra
''Aureoumbra'' is a genus of algae belonging to the family Sarcinochrysidaceae. Species: *'' Aureoumbra geitleri'' *'' Aureoumbra lagunensis'' References {{Taxonbar, from=Q25367478 Ochrophyta Heterokont genera ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |