Chloromonas arctica sp nov., a psychrotolerant alga from snow in the High Arctic (Chlamydomonadales, Chlorophyta)

0490101 - BÚ 2019 RIV GB eng J - Journal Article
Barcyte, D. - Hodač, L. - Nedbalová, Linda - Elster, Josef
Chloromonas arctica sp nov., a psychrotolerant alga from snow in the High Arctic (Chlamydomonadales, Chlorophyta).
International Journal of Systematic and Evolutionary Microbiology. Roč. 68, č. 3 (2018), s. 851-859. ISSN 1466-5026. E-ISSN 1466-5034
Institutional support: RVO:67985939
Keywords : morphology * taxonomy * snow algae
OECD category: Ecology
Impact factor: 2.166, year: 2018

Phylogenetic analyses of the plastid rbcL and nuclear 18S rRNA gene showed that the alga is nested within a clade containing a number of psychrotolerant strains within the Chloromonadinia phylogroup (Chlorophyceae). In the rbcL phylogeny, the alga formed an independent lineage, sister to the freshwater species Chloromonas paraserbinowii. Comparisons of secondary structure models of a highly variable ITS2 rDNA marker showed support for a distinct species identity for the new strain. The ITS2 secondary structure of the new isolate differed from the closest matches ‘Chlamydomonas’ gerloffii and Choloromonas reticulata by three and five compensatory base changes, respectively. Considering the morphological and molecular differences from its closest relatives, a new psychrotolerant species from the Arctic, Choromonas arctica sp. nov., is proposed.
Permanent Link: http://hdl.handle.net/11104/0284390