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Synchromophyte
Picophagea, also known as Synchromophyceae, is a class of photosynthetic stramenopiles. The chloroplast of the Synchromophyceae are surrounded by two membranes and arranged in a way where they share the outer pair of membranes. The entire chloroplast complex is surrounded by an additional two outer membranes. Evolution Synchromophyceae or Picophagea is a clade within the Ochrophyta that contains a few genera of amoeboid organisms such as the mixotrophic '' Synchromonas'' and the heterotrophic '' Chlamydomyxa'', '' Leukarachnion'' and '' Picophagus''. It is phylogenetically close to the classes Chrysophyceae and Eustigmatophyceae, within the SII clade. Taxonomy According to AlgaeBase, the class contains only two genera: * Class Picophagea Synchromophyceae ** Order Synchromales Horn & Ehlers 2007 *** Family Synchromaceae Schnetter & Ehlers 2007 **** Genus ''Synchroma ''Synchroma'' () is a genus of marine stramenopile algae containing two species with amoeboid morphology. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ochrophyte Classes
Ochrophytes, also known as heterokontophytes or stramenochromes, are a phylum of algae. They are the photosynthetic stramenopiles, a group of eukaryotes, organisms with a cell nucleus, characterized by the presence of two unequal flagella, one of which has tripartite hairs called mastigonemes. In particular, they are characterized by photosynthetic organelles or plastids enclosed by four membranes, with membrane-bound compartments called thylakoids organized in piles of three, chlorophyll ''a'' and ''c'' as their photosynthetic pigments, and additional pigments such as β-carotene and xanthophylls. Ochrophytes are one of the most diverse lineages of eukaryotes, containing ecologically important algae such as brown algae and diatoms. They are classified either as phylum Ochrophyta, Heterokontophyta or as subphylum Ochrophytina withing phylum Gyrista. Their plastids are of red algal origin. Description Ochrophytes are eukaryotic organisms composed of cells that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ochrophyta
Ochrophytes, also known as heterokontophytes or stramenochromes, are a phylum of algae. They are the photosynthetic stramenopiles, a group of eukaryotes, organisms with a cell nucleus, characterized by the presence of two unequal flagella, one of which has tripartite hairs called mastigonemes. In particular, they are characterized by photosynthetic organelles or plastids enclosed by four membranes, with membrane-bound compartments called thylakoids organized in piles of three, chlorophyll ''a'' and ''c'' as their photosynthetic pigments, and additional pigments such as β-carotene and xanthophylls. Ochrophytes are one of the most diverse lineages of eukaryotes, containing ecologically important algae such as brown algae and diatoms. They are classified either as phylum Ochrophyta, Heterokontophyta or as subphylum Ochrophytina withing phylum Gyrista. Their plastids are of red algal origin. Description Ochrophytes are eukaryotic organisms composed of cells that are either ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchromales
''Synchroma'' () is a genus of marine life, marine stramenopile algae containing two species with amoeboid morphology. They are grouped within the monotypic family Synchromaceae and order Synchromales as part of an independent clade of ochrophytes known as Picophagea or Synchromophyceae. They are distinguished by their plastid complexes, composed of several chloroplasts grouped together and collectively enveloped by the same cell membrane, membranes. Within their biological life cycle, life cycle, ''Synchroma'' cells are usually sessile and protected by a lorica (biology), lorica. These cells can join their reticulopodia in a network known as meroplasmodium, or they can become migrating amoebae capable of fusing to each other. Cellular structure ''Synchroma'' are eukaryotic algae composed of amoeboid cell (biology), cells with no flagella and multiple yellowish-green chloroplasts containing chlorophyll a, chlorophyll ''a'' and chlorophyll c2, ''c2'', fucoxanthin, violaxanthin, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raphidophyceae
The raphidophytes, formally known as Raphidophycidae or Raphidophyceae (formerly referred to as Chloromonadophyceae and Chloromonadineae), are a small group of eukaryotic algae that includes both marine and freshwater species. All raphidophytes are unicellular, with large cells (50 to 100 μm), but no cell walls. Raphidophytes possess a pair of flagella, organised such that both originate from the same invagination (or gullet). One flagellum points forwards, and is covered in hair-like mastigonemes, while the other points backwards across the cell surface, lying within a ventral groove. Raphidophytes contain numerous ellipsoid chloroplasts, which contain chlorophylls a, c1 and c2. They also make use of accessory pigments including β-carotene and diadinoxanthin. Unlike other heterokontophytes, raphidophytes do not possess the photoreceptive organelle (or eyespot) typical of this group. In terms of ecology, raphidophytes occur as photosynthetic autotrophs across ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synchroma
''Synchroma'' () is a genus of marine stramenopile algae containing two species with amoeboid morphology. They are grouped within the monotypic family Synchromaceae and order Synchromales as part of an independent clade of ochrophytes known as Picophagea or Synchromophyceae. They are distinguished by their plastid complexes, composed of several chloroplasts grouped together and collectively enveloped by the same membranes. Within their life cycle, ''Synchroma'' cells are usually sessile and protected by a lorica. These cells can join their reticulopodia in a network known as meroplasmodium, or they can become migrating amoebae capable of fusing to each other. Cellular structure ''Synchroma'' are eukaryotic algae composed of amoeboid cells with no flagella and multiple yellowish-green chloroplasts containing chlorophyll ''a'' and ''c2'', fucoxanthin, violaxanthin, antheraxanthin, zeaxanthin and b-carotene. Each cell presents plastid complexes of 6-8 chloroplasts each. Within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinguiophyceae
Pinguiochrysidaceae is a family of marine Heterokontophyta. It is the only family in the order Pinguiochrysidales, which is the only order in the class Pinguiophyceae. It includes five species of unicellular organisms with high concentration of polyunsaturated fatty acids in the cytoplasm. The other common features are the lack of cell wall and the tendency for flagella loss even on the stage of zoospore, which is unusual for heterokonts. One species (''Polypodochrysis teissieri'') inhabits benthic substates (sometimes found the mucilage of other algae) and is able to produce lorica with one or more tubular necks. The other species live in the plankton Plankton are the diverse collection of organisms that drift in Hydrosphere, water (or atmosphere, air) but are unable to actively propel themselves against ocean current, currents (or wind). The individual organisms constituting plankton are ca .... Species * Class Pinguiophyceae ** Order Pinguiochrysidales Kawachi et al., 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olisthodiscophyceae
''Olisthodiscus'' is a genus of heterokont algae, present in marine or brackish waters. It is the only genus in the family Olisthodiscaceae, the order Olisthodiscales, and the class Olisthodiscophyceae. After a long history of controversial classifications, in 2021 it was recognized as a phylogenetically distinct lineage from the rest of ochrophyte classes. Description ''Olisthodiscus'' is a unicellular organism. Cells are rounded or pear-shaped, flattened and curved somewhat inwards. The cell membrane is covered in scales, fibrils, and bead-shaped protrusions; just underneat the plasma membrane are numerous vesicles. Cells have two flagella: one leads in front of the cell and is somewhat longer than the cell body, while the other trails behind and is equal in length to slightly shorter than the cell body. When swimming, ''Olisthodiscus'' glides along a substrate and does not rotate. Multiple plastids are present, and are parietally located; they contain pyrenoids. ''Olisthodiscu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
