| SAG Strain Number: | 63.90 |
| TAXONOMY |
| Genus: | Desmococcus |
| Species: | olivaceus |
| Taxonomic position: | Chlorophyta - Trebouxiophyceae |
| Authority: | (Persoon ex Acharius) Laundon 1985 |
| Variety: | |
| Formerly called: | authentic strain of Desmococcus antarcticus (Darling et Friedmann) Rybalka, Wolf, Andersen et Friedl 2013 (Chlorophyta - Trebouxiophyceae); authentic strain of Heterococcus endolithicus Darling et Friedmann (Stramenopiles - Xanthophyceae) |
| Authentic: | no |
| Division: | Chlorophyta |
| Class: | Trebouxiophyceae |
| ORIGIN |
| General habitat: | cryptoendolithic |
| Climatic zone: | polar |
| Continent: | Antarctica |
| Country: | Antarctica |
| Locality: | Southern Victoria Land, University Valley, Quartermain Range, elevation 1200m, cryptoendolithic in green zone of Beacon sandstone together with Hemichloris antarctica |
| Lat. / Long. (Precision): | -77.86657 / 160.666623 (400m) View on Google Maps |
| Year: | between 1979 and 1980 |
| Isolated by: | R. Ocampo-Friedmann (coll. E.I. Friedmann) |
| Strain number by isolator: | 195/A790-35 as Heterococcus endolithicus |
| Deposition by: | E. I. Friedmann |
| Deposition date: | 11.1987 |
| CULTURE INFORMATION |
| Culture medium: | ES Ag |
| Axenic: | bacterial and fungal contaminations |
| Strain relatives: | |
| Agitation resistance: | yes |
| Special properties: | NO known Nagoya Protocol restrictions for this strain; psychrophilic (-4 to 22°C); renamed into non-authentic strain of Desmococcus olivaceus (Persoon ex Acharius) J.R.Laundon. acc. to Proeschold et Darienko (2020). SAG 06/2025; taxonomic revision from authentic strain of H. endolithicus Darling et Friedman (Stramenopiles - Xanthophyceae) into epitype strain of Desmococcus antarcticus (Darling et Friedmann) Rybalka et al. 2013 (Chlorophyta - Trebouxioph.) |
| |
| PUBLICATIONS |
| Publication: | Proeschold T. et al. (2020) The green puzzle Stichococcus (Trebouxiophyceae, Chlorophyta): New generic and species concept among this widely distributed genus. Phytotaxa 441 (2):113-142 |
| Publication: | Rybalka, N. et al. (2013) Congruence of chloroplast- and nuclear-encoded DNA sequence variations used to assess species boundaries in the soil microalga Heterococcus (Stramenopiles, Xanthophyceae). BMC Evolutionary Biology 13:39 |
| Publication: | Darling, R.B. et al. (1987) Heterococcus endolithicus sp. nov. (Xanthophyceae) and other terrestrial Heterococcus species from Antarctica: Morphological changes during life history and response to temperature. J. Phycol. 23:598-60 |
| SEQUENCE INFORMATION |
| Sequence Accession: | JX681197 Desmococcus antarctica strain SAG 63.90 isolate 195/A790-35 18S ribosomal RNA gene, partial sequence. (683 bp) |
| CRYO |
| Cryopreservation: | not detected |
| TEACHING |
| Recommended for teaching: | no |
