Elliptochloris

{{Automatic taxobox

| image = Patova_et_al_2023_5d_Elliptochloris_bilobata.png

| image_caption = Elliptochloris bilobata

| taxon = Elliptochloris

| authority = Tscherm.-Woess

| subdivision_ranks = Species

| subdivision =

Elliptochloris antarctica (Tschermak-Woess & Friedmann) Darienko & Pröschold
Elliptochloris bilobata Tschermak-Woess
Elliptochloris incisiformis L.Hoffmann & I.Kostikov
Elliptochloris marina Letsch
Elliptochloris perforata Hoffmann & Kostikov
Elliptochloris philistinensis Novis & Visnovsky
Elliptochloris reniformis Darienko & Pröschold
Elliptochloris subsphaerica (Reisigl) Ettl & G.Gärtner

| subdivision_ref =

}}

Elliptochloris is a genus of green algae in the order Prasiolales.{{AlgaeBase genus|name=Elliptochloris|id=45462|access-date=2022-02-28}} Species of this genus are common and found in a variety of terrestrial habitats such as soils. Some species in the genus are {{lichengloss|photobiont}} partners in lichens. One species, E. marina, is a symbiont within two species of sea anemone, Anthopleura elegantissima and A. xanthogrammica.{{cite journal|doi=10.1111/j.1529-8817.2009.00727.x |title=Elliptochloris marina sp. nov. (Trebouxiophyceae, Chlorophyta), symbiotic green alga of the temperate pacific sea anemones Anthopleura xanthogrammica and A. elegantissima (Anthozoa, Cnidaria) |date=2009 |last1=Letsch |first1=Molly R. |last2=Muller-Parker |first2=Gisèle |last3=Friedl |first3=Thomas |last4=Lewis |first4=Louise A. |journal=Journal of Phycology |volume=45 |issue=5 |pages=1127–1135 |pmid=27032358 }} It seems to have a worldwide distribution.{{cite book|doi=10.1142/9781786340580_0006 |chapter=Symbioses of the Green Algal Genera Coccomyxa and Elliptochloris (Trebouxiophyceae, Chlorophyta) |title=Algal and Cyanobacteria Symbioses |date=2017 |last1=Gustavs |first1=Lydia |last2=Schiefelbein |first2=Ulf |last3=Darienko |first3=Tatyana |last4=Pröschold |first4=Thomas |pages=169–208 |isbn=978-1-78634-057-3 }}

Description

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.

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. However, some strains (for example SAG 2200) only produce one type of autospores, and when found as photobionts in lichens, the algae tend to only produce S-type autospores.

Phylogenetics

Elliptochloris forms a monophyletic clade that is sister to Coccomyxa.{{Cite journal |last1=Darienko |first1=T. |last2=Gustavs |first2=L. |last3=Pröschold |first3=T. |date=2016 |title=Species concept and nomenclatural changes within the genera Elliptochloris and Pseudochlorella (Trebouxiophyceae) based on an integrative approach |journal=Journal of Phycology |volume=52 |issue=6 |pages=1125–1145 |name-list-style=amp | doi=10.1111/jpy.12481 |pmid=27734501 }}

References

{{Reflist|refs=

{{cite book|last1=Ettl|first1=Hanuš|last2=Gärtner|first2=Georg|title=Syllabus der Boden-, Luft- und Flechtenalgen|edition=2nd|date=2013|publisher=Springer-Verlag|isbn=9783642394614|language=de}}

{{cite journal |last1=Sanders |first1=William B. |last2=Masumoto |first2=Hiroshi |title=Lichen algae: the photosynthetic partners in lichen symbioses |journal=The Lichenologist |volume=53 |issue=5 |year=2021 |doi=10.1017/S0024282921000335 |pages=347–393 |doi-access=free}}

}}

Category:Trebouxiophyceae genera

Category:Enigmatic algae taxa

Category:Taxa named by Elisabeth Tschermak-Woess

Category:Taxa described in 1980