Ecophysiological and morphological comparison of two populations of Chlainomonas sp. (Chlorophyta) causing red snow on ice-covered lakes in the High Tatras and Austrian Alps
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10386279" target="_blank" >RIV/00216208:11310/18:10386279 - isvavai.cz</a>
Alternative codes found
RIV/61388971:_____/18:00495884
Result on the web
<a href="https://doi.org/10.1080/09670262.2018.1426789" target="_blank" >https://doi.org/10.1080/09670262.2018.1426789</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/09670262.2018.1426789" target="_blank" >10.1080/09670262.2018.1426789</a>
Alternative languages
Result language
angličtina
Original language name
Ecophysiological and morphological comparison of two populations of Chlainomonas sp. (Chlorophyta) causing red snow on ice-covered lakes in the High Tatras and Austrian Alps
Original language description
Based on analyses of multiple molecular markers (18S rDNA, ITS1, ITS2 rDNA, rbcL), an alga that causes red snow on the melting ice cover of a high-alpine lake in the High Tatras (Slovakia) was shown to be identical with Chlainomonas sp. growing in a similar habitat in the Tyrolean Alps (Austria). Both populations consisted mostly of smooth-walled quadriflagellates. They occurred in slush, and shared similar photosynthetic performances (photoinhibition above 1300 mu mol photons m(-2) s(-1)), very high levels of polyunsaturated fatty acids (PUFA, 64% and 74% respectively) and abundant astaxanthin accumulation, comparable to the red spores of Chlamydomonas nivalis (Bauer) Wille. Physiological differences between the Slovak and Austrian populations included higher levels of -tocopherol and a 13Z-isomer of astaxanthin in the former. High accumulation of secondary pigments in the Slovak population probably reflected harsher environmental conditions, since the collection was made later in the growing season when cells were exposed to higher irradiance at the surface. Using a polyphasic approach, we compared Chlainomonas sp. with Chlamydomonasnivalis. The latter causes ?conventional red snow, and shows high photophysiological plasticity, with high efficiency under low irradiance and no photoinhibition up to 2000 mu mol photons m(-2) s(-1). Its PUFA content was significantly lower (50%). An annual cycle of lake-to-snow colonization by Chlainomonas sp. from slush layers deeper in the ice cover is proposed. Our results point to an ecologically highly specialized cryoflora species, whose global distribution is likely to be more widespread than previously assumed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
<a href="/en/project/GA17-00027S" target="_blank" >GA17-00027S: Very long chain fatty acids from microorganisms</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Phycology
ISSN
0967-0262
e-ISSN
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Volume of the periodical
53
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
230-243
UT code for WoS article
000431546100012
EID of the result in the Scopus database
2-s2.0-85044926545