Elevation-dependent endopolyploid response suggests that plants with holocentric chromosomes are less stressed by UV-B
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00118774" target="_blank" >RIV/00216224:14310/21:00118774 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1093/botlinnean/boaa054" target="_blank" >https://doi.org/10.1093/botlinnean/boaa054</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/botlinnean/boaa054" target="_blank" >10.1093/botlinnean/boaa054</a>
Alternative languages
Result language
angličtina
Original language name
Elevation-dependent endopolyploid response suggests that plants with holocentric chromosomes are less stressed by UV-B
Original language description
Previous studies suggested that holocentric chromosomes may confer a selective advantage under high ionizing or UV-B radiation due to their tolerance of fragmentation, and that the first plant and animal colonizers of land in the Palaeozoic were or may have been holocentric. Holocentric chromosomes could have, therefore, aided terrestrialization of Earth’s biota half a billion years ago, because leaving water meant facing a sharp increase of UV-B. Because we cannot go back in time, the hypothesis needs to be tested with present-day species using an indicator of UV-B stress. We took advantage of the fact that UV-B intensity increases with elevation and tested whether holocentric plants (six species of Cyperaceae and Juncaceae) are less stressed with increasing elevation than monocentric plants (six species of Poaceae). Phylogenetically corrected regression showed that the proxy for UV-B stress (endopolyploidy index from 671 samples measured by flow cytometry) increased with elevation in holocentric and monocentric species, but the increase was more rapid in monocentric species. Although half a billion year elapsed since terrestrialization, holocentric Cyperaceae and Juncaceae still appear less stressed by UV-B than monocentric Poaceae, despite the other counter UV-B adaptations they both have evolved (graminoid morphology, silica bodies).
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/GA17-21053S" target="_blank" >GA17-21053S: Success of holocentric chromosomes: natural competitive experiment on a global evolutionary scale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Botanical Journal of the Linnean Society
ISSN
0024-4074
e-ISSN
1095-8339
Volume of the periodical
195
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
106-113
UT code for WoS article
000606528500006
EID of the result in the Scopus database
2-s2.0-85099258906