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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43910232 RIV/00216208:11310/25:10515067

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GF22-08680L" target="_blank" >GF22-08680L: Vznik odolnosti proti vysychání a poškození mrazem u řas biologických půdních krust Vysoké Arktidy</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plant and Cell Physiology

ISSN

0032-0781

e-ISSN

1471-9053

Svazek periodika

66

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

1397-1411

Kód UT WoS článku

001567543700001

EID výsledku v databázi Scopus

2-s2.0-105019795545