Cryptomonad
Group of algae and colorless flagellates / From Wikipedia, the free encyclopedia
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The cryptomonads (or cryptophytes)[2] are a group of algae,[3] most of which have plastids. They are traditionally considered a division of algae among phycologists, under the name of Cryptophyta.[4] 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 may exhibit mixotrophy.[5] They are classified as clade Cryptomonada, which is divided into two classes: heterotrophic Goniomonadea and phototrophic Cryptophyceae. The two groups are united under three shared morphological characteristics: presence of a periplast, ejectisomes with secondary scroll, and mitochondrial cristae with flat tubules.[6] Genetic studies as early as 1994 also supported the hypothesis that Goniomonas was sister to Cryptophyceae.[7] A study in 2018 found strong evidence that the common ancestor of Cryptomonada was an autotrophic protist.[8]
Cryptomonads | |
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Rhodomonas salina | |
Scientific classification | |
Domain: | Eukaryota |
Clade: | Diaphoretickes |
Phylum: | Cryptista |
Subphylum: | Rollomonadia |
Superclass: | Cryptomonada Cavalier-Smith, 2004 stat. nov. 2015[1] |
Classes & orders[1] | |