|
Anaeramoeba
Anaeramoeba is a genus of Anaerobic organism, anaerobic protists on uncertain phylogenetic position, first described in 2016. Description As the name implies, ''Anaeramoeba'' are Anaerobic respiration, anaerobic amoeboid organisms which form a fan-like shape similar to that of ''Flamella''. At least two species can also sometimes assume flagellate forms; with either two or four flagella. They contain double-membrane bound organelles assumed to be derived from mitochondria, usually associated with colonies of unidentified, rod-shaped bacteria. Discovery and classification ''Anaeramoeba'' specimens were first isolated in 2016, from samples shallow water anoxic ocean sediments collected from around the world. Despite the similarities to ''Flamella'' in both morphology and environment, genetic analyses found that ''Anaeramoeba'' do not belong within Amoebozoa. The precise phylogenetic position was not identified with strong support, and the genus may represent a newly identifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamonad
The metamonads are microscopic eukaryotic organisms, a large group of flagellate amitochondriate Loukozoa. Their composition is not entirely settled, but they include the retortamonads, diplomonads, and possibly the parabasalids and oxymonads as well. These four groups are all anaerobic (many being aerotolerant anerobes), occurring mostly as symbiotes or parasites of animals, as is the case with ''Giardia lamblia'' which causes diarrhea in mammals. Characteristics A number of parabasalids and oxymonads are found in termite guts, and play an important role in breaking down the cellulose found in wood. Some other metamonads are parasites. These flagellates are unusual in lacking mitochondria. Originally they were considered among the most primitive eukaryotes, diverging from the others before mitochondria appeared. However, they are now known to have lost mitochondria secondarily, and retain both organelles and nuclear genes derived from them. Mitochondrial relics include h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |