Pre-akinete formation in Zygnema sp. from polar habitats is associated with metabolite re-arrangement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10424233" target="_blank" >RIV/00216208:11310/20:10424233 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7u_JcoH1F3" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7u_JcoH1F3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/jxb/eraa123" target="_blank" >10.1093/jxb/eraa123</a>
Alternative languages
Result language
angličtina
Original language name
Pre-akinete formation in Zygnema sp. from polar habitats is associated with metabolite re-arrangement
Original language description
In streptophytic green algae in the genus Zygnema, pre-akinete formation is considered a key survival strategy under extreme environmental conditions in alpine and polar regions. The transition from young, dividing cells to pre-akinetes is associated with morphological changes and the accumulation of storage products. Understanding the underlying metabolic changes could provide insights into survival strategies in polar habitats. Here, GC-MS-based metabolite profiling was used to study the metabolic signature associated with pre-akinete formation in Zygnema sp. from polar regions under laboratory conditions, induced by water and nutrient depletion, or collected in the field. Light microscopy and TEM revealed drastic changes in chloroplast morphology and ultrastructure, degradation of starch grains, and accumulation of lipid bodies in pre-akinetes. Accordingly, the metabolite profiles upon pre-akinete formation reflected a gradual shift in metabolic activity. Compared with young cells, pre-akinetes showed an overall reduction in primary metabolites such as amino acids and intermediates of the tricarboxylic acid (TCA) cycle, consistent with a lower metabolic turnover, while they accumulated lipids and oligosaccharides. Overall, the transition to the preakinete stage involves re-allocation of photosynthetically fixed energy into storage instead of growth, supporting survival of extreme environmental conditions.
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
10611 - Plant sciences, botany
Result continuities
Project
<a href="/en/project/GF15-34645L" target="_blank" >GF15-34645L: Colonization of Land by Conjugating Green Algae</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Experimental Botany
ISSN
0022-0957
e-ISSN
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Volume of the periodical
71
Issue of the periodical within the volume
11
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
3314-3322
UT code for WoS article
000544177200009
EID of the result in the Scopus database
2-s2.0-85087654299