Unveiling the molecular mechanisms of the stress resilience of High Arctic Klebsormidium flaccidum: a multifaceted study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F25%3A00640292" target="_blank" >RIV/67985939:_____/25:00640292 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/25:43910232 RIV/00216208:11310/25:10515067
Result on the web
<a href="https://doi.org/10.1093/pcp/pcaf091" target="_blank" >https://doi.org/10.1093/pcp/pcaf091</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/pcp/pcaf091" target="_blank" >10.1093/pcp/pcaf091</a>

Result language
angličtina
Original language name
Unveiling the molecular mechanisms of the stress resilience of High Arctic Klebsormidium flaccidum: a multifaceted study
Original language description
The green alga Klebsormidium is found worldwide in terrestrial and freshwater habitats. A novel strain was isolated from biological soil crusts on Breinosa Mountain in Svalbard (High Arctic, 78 degrees N) to investigate its adaptation to extreme Arctic conditions, characterized by low temperatures and short periods of snow-free ground. Genetic analyses confirmed the strain's identity as Klebsormidium flaccidum, showing high genetic similarity to strains from polar and temperate habitats. This study explored the effects of nitrogen starvation, cold stress, desiccation, and freezing, focusing on molecular responses and stress resilience. Nitrogen starvation strongly impacted metabolic activity, while cold and desiccation stress had more subtle effects, with K. flaccidum showing permanent stress-related gene expression instead of acute responses. Cold acclimation was found to enhance desiccation and freezing tolerance, while nitrogen starvation worsened the effects of these stresses. These results suggest that K. flaccidum CCALA 1182 is inherently capable of withstanding fluctuating environmental stresses, highlighting its potential for survival in diverse and harsh ecosystems.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10618 - Ecology

Project
<a href="/en/project/GF22-08680L" target="_blank" >GF22-08680L: Origin of resistance against desiccation and cryoinjuries in soil crust microalgae of High Arctic</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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