Elliptochloris
| Elliptochloris | |
|---|---|
| |
| Elliptochloris bilobata | |
Scientific classification 
| |
| Clade: | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Trebouxiophyceae |
| Order: | incertae sedis |
| Family: | incertae sedis |
| Genus: | Elliptochloris Tscherm.-Woess[1] |
| Species[1] | |
| |
Elliptochloris is a genus of green algae in the order Prasiolales.[1] Species of this genus are common and found in a variety of terrestrial habitats such as soils.[2] Some species in the genus are photobiont partners in lichens.[3] One species, E. marina, is a symbiont within two species of sea anemone, Anthopleura elegantissima and A. xanthogrammica.[4] It seems to have a worldwide distribution.[5]
Description
[edit]Elliptochloris consists of solitary cells which are spherical to ellipsoidal, or cylindrical or slightly curved. Cells contain a single parietal chloroplast which may be band-shaped, trough-shaped, hollow and spherical; the chloroplasts may be lobed or not, and with or without a pyrenoid. Cells contain a single nucleus.[6]
Reproduction occurs by the formation of autospores, which come in two different morphologies: S-type, which are larger, ellipsoidal and formed in groups of 2–4 per sporangium, and E-type, which are smaller, rod-shaped, and formed in groups of 16-32 per sporangium. The formation of two different autospore morphologies is characteristic for Elliptochloris.[6] However, some strains (for example SAG 2200) only produce one type of autospores,[2] and when found as photobionts in lichens, the algae tend to only produce S-type autospores.[5]
Phylogenetics
[edit]Elliptochloris forms a monophyletic clade that is sister to Coccomyxa.[2]
References
[edit]- ^ a b c Guiry, M.D.; Guiry, G.M. "Elliptochloris". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2022-02-28.
- ^ a b c Darienko, T.; Gustavs, L. & Pröschold, T. (2016). "Species concept and nomenclatural changes within the genera Elliptochloris and Pseudochlorella (Trebouxiophyceae) based on an integrative approach". Journal of Phycology. 52 (6): 1125–1145. doi:10.1111/jpy.12481. PMID 27734501.
- ^ Sanders, William B.; Masumoto, Hiroshi (2021). "Lichen algae: the photosynthetic partners in lichen symbioses". The Lichenologist. 53 (5): 347–393. doi:10.1017/S0024282921000335.
- ^ Letsch, Molly R.; Muller-Parker, Gisèle; Friedl, Thomas; Lewis, Louise A. (2009). "Elliptochloris marina sp. nov. (Trebouxiophyceae, Chlorophyta), symbiotic green alga of the temperate pacific sea anemones Anthopleura xanthogrammica and A. elegantissima (Anthozoa, Cnidaria)". Journal of Phycology. 45 (5): 1127–1135. doi:10.1111/j.1529-8817.2009.00727.x. PMID 27032358.
- ^ a b Gustavs, Lydia; Schiefelbein, Ulf; Darienko, Tatyana; Pröschold, Thomas (2017). "Symbioses of the Green Algal Genera Coccomyxa and Elliptochloris (Trebouxiophyceae, Chlorophyta)". Algal and Cyanobacteria Symbioses. pp. 169–208. doi:10.1142/9781786340580_0006. ISBN 978-1-78634-057-3.
- ^ a b Ettl, Hanuš; Gärtner, Georg (2013). Syllabus der Boden-, Luft- und Flechtenalgen (in German) (2nd ed.). Springer-Verlag. ISBN 9783642394614.
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