| ZEDEK, František, Klára PLAČKOVÁ, Pavel VESELÝ, Jakub ŠMERDA, Petr ŠMARDA, Lucie HOROVÁ and Petr BUREŠ. Endopolyploidy is a common response to UV-B stress in natural plant populations, but its magnitude may be affected by chromosome type. Annals of Botany. Academic Press, 2020, vol. 126, No 5, p. 883-889. ISSN 0305-7364. Available from: https://dx.doi.org/10.1093/aob/mcaa109. |
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@article{1688080,
author = {Zedek, František and Plačková, Klára and Veselý, Pavel and Šmerda, Jakub and Šmarda, Petr and Horová, Lucie and Bureš, Petr},
article_number = {5},
doi = {http://dx.doi.org/10.1093/aob/mcaa109},
keywords = {Endopolyploidy; UV-B-absorbing compounds; endoreduplication index; flow cytometry; holocentric chromosomes; monocentric chromosomes; natural population; ultraviolet radiation},
language = {eng},
issn = {0305-7364},
journal = {Annals of Botany},
title = {Endopolyploidy is a common response to UV-B stress in natural plant populations, but its magnitude may be affected by chromosome type.},
url = {https://academic.oup.com/aob/article-abstract/126/5/883/5862361?redirectedFrom=fulltext},
volume = {126},
year = {2020}
}
TY - JOUR
ID - 1688080
AU - Zedek, František - Plačková, Klára - Veselý, Pavel - Šmerda, Jakub - Šmarda, Petr - Horová, Lucie - Bureš, Petr
PY - 2020
TI - Endopolyploidy is a common response to UV-B stress in natural plant populations, but its magnitude may be affected by chromosome type.
JF - Annals of Botany
VL - 126
IS - 5
SP - 883-889
EP - 883-889
PB - Academic Press
SN - 03057364
KW - Endopolyploidy
KW - UV-B-absorbing compounds
KW - endoreduplication index
KW - flow cytometry
KW - holocentric chromosomes
KW - monocentric chromosomes
KW - natural population
KW - ultraviolet radiation
UR - https://academic.oup.com/aob/article-abstract/126/5/883/5862361?redirectedFrom=fulltext
L2 - https://academic.oup.com/aob/article-abstract/126/5/883/5862361?redirectedFrom=fulltext
N2 - BACKGROUND AND AIMS: Ultraviolet-B radiation (UV-B) radiation damages the DNA, cells and photosynthetic apparatus of plants. Plants commonly prevent this damage by synthetizing UV-B-protective compounds. Recent laboratory experiments in Arabidopsis and cucumber have indicated that plants can also respond to UV-B stress with endopolyploidy. Here we test the generality of this response in natural plant populations, considering their monocentric or holocentric chromosomal structure. METHODS: We measured the endopolyploidy index (flow cytometry) and the concentration of UV-B-protective compounds in leaves of 12 herbaceous species (1007 individuals) from forest interiors and neighbouring clearings where they were exposed to increased UV-B radiation (103 forest+clearing populations). We then analysed the data using phylogenetic mixed models. KEY RESULTS: The concentration of UV-B protectives increased with UV-B doses estimated from hemispheric photographs of the sky above sample collection sites, but the increase was more rapid in species with monocentric chromosomes. Endopolyploidy index increased with UV-B doses and with concentrations of UV-B-absorbing compounds only in species with monocentric chromosomes, while holocentric species responded negligibly. CONCLUSIONS: Endopolyploidy seems to be a common response to increased UV-B in monocentric plants. Low sensitivity to UV-B in holocentric species might relate to their success in high-UV-stressed habitats and corroborates the hypothesized role of holocentric chromosomes in plant terrestrialization.
ER -
ZEDEK, František, Klára PLAČKOVÁ, Pavel VESELÝ, Jakub ŠMERDA, Petr ŠMARDA, Lucie HOROVÁ and Petr BUREŠ. Endopolyploidy is a common response to UV-B stress in natural plant populations, but its magnitude may be affected by chromosome type. \textit{Annals of Botany}. Academic Press, 2020, vol.~126, No~5, p.~883-889. ISSN~0305-7364. Available from: https://dx.doi.org/10.1093/aob/mcaa109.
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