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Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 200 species. [1] [2] Species of Euglena are found in fresh water and salt water.
A monophyletic subgroup known as Euglenophyceae have chloroplasts and produce their own food through photosynthesis. [ 3 ] [ 4 ] [ 5 ] This group contains the carbohydrate paramylon . Euglenids split from other Euglenozoa (a larger group of flagellates) more than a billion years ago.
Euglena gracilis is a freshwater species of single-celled alga in the genus Euglena. It has secondary chloroplasts , and is a mixotroph able to feed by photosynthesis or phagocytosis . It has a highly flexible cell surface, allowing it to change shape from a thin cell up to 100 μm long to a sphere of approximately 20 μm.
Euglenales consists mostly of freshwater organisms, in contrast to its sister Eutreptiales which is generally marine. Cells have two flagella, but only one is emergent; the other is very short and does not emerge from the cell, so cells appear to have only one flagellum. [3]
Autotrophic protists that make their own food without needing to consume other organisms, usually by photosynthesis (sometimes by chemosynthesis) Green algae, Pyramimonas: Red and brown algae, diatoms, coccolithophores and some dinoflagellates. Plant-like protists are important components of phytoplankton discussed below. Animal-like
[36] [37] Protozoa, like plants and animals, can be considered heterotrophs or autotrophs. [33] Autotrophs like Euglena are capable of producing their energy using photosynthesis, while heterotrophic protozoa consume food by either funneling it through a mouth-like gullet or engulfing it with pseudopods, a form of phagocytosis. [33]
A mixotrophic plant using mycorrhizal fungi to obtain photosynthesis products from other plants. Amongst plants, mixotrophy classically applies to carnivorous, hemi-parasitic and myco-heterotrophic species. However, this characterisation as mixotrophic could be extended to a higher number of clades as research demonstrates that organic forms of ...
Eu:CROPIS (Euglena and Combined Regenerative Organic-Food Production in Space) was a life science satellite developed by the German Aerospace Center (DLR) and intended to investigate the possibility of growing plants (specifically tomatoes) in different levels of gravity, such as that of the Moon and Mars, [1] as a sustainable food source using human urine for moisture and as the source of ...