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@article{1365178,
author = {Veleba, Adam and Šmarda, Petr and Zedek, František and Horová, Lucie and Šmerda, Jakub and Bureš, Petr},
article_location = {Oxford},
article_number = {1},
doi = {http://dx.doi.org/10.1093/aob/mcw229},
keywords = {DNA content; Droseraceae; carnivorous plants; flow cytometry; genome size evolution; GC content;DNA base composition; holocentric chromosomes; holokinetic chromosomes},
language = {eng},
issn = {0305-7364},
journal = {Annals of Botany},
title = {Evolution of genome size and genomic GC content in carnivorous holokinetics (Droseraceae)},
url = {https://academic.oup.com/aob/article/119/3/409/2740719},
volume = {119},
year = {2017}
}
TY - JOUR
ID - 1365178
AU - Veleba, Adam - Šmarda, Petr - Zedek, František - Horová, Lucie - Šmerda, Jakub - Bureš, Petr
PY - 2017
TI - Evolution of genome size and genomic GC content in carnivorous holokinetics (Droseraceae)
JF - Annals of Botany
VL - 119
IS - 1
SP - 409-416
EP - 409-416
PB - Oxford University Press
SN - 03057364
KW - DNA content
KW - Droseraceae
KW - carnivorous plants
KW - flow cytometry
KW - genome size evolution
KW - GC content;DNA base composition
KW - holocentric chromosomes
KW - holokinetic chromosomes
UR - https://academic.oup.com/aob/article/119/3/409/2740719
L2 - https://academic.oup.com/aob/article/119/3/409/2740719
N2 - Background and Aims: Studies in the carnivorous family Lentibulariaceae in the last years resulted in the discovery of the smallest plant genomes and an unusual pattern of genomic GC content evolution. However, scarcity of genomic data in other carnivorous clades still prevents a generalization of the observed patterns. Here the aim was to fill this gap by mapping genome evolution in the second largest carnivorous family, Droseraceae, where this evolution may be affected by chromosomal holokinetism in Drosera. Methods: The genome size and genomic GC content of 71 Droseraceae species were measured by flow cytometry. A dated phylogeny was constructed, and the evolution of both genomic parameters and their relationship to species climatic niches were tested using phylogeny-based statistics. Key Results: The 2C genome size of Droseraceae varied between 488 and 10 927 Mbp, and the GC content ranged between 37.1 and 44.7 %. The genome sizes and genomic GC content of carnivorous and holocentric species did not differ from those of their non-carnivorous and monocentric relatives. The genomic GC content positively correlated with genome size and annual temperature fluctuations. The genome size and chromosome numbers were inversely correlated in the Australian clade of Drosera. Conclusions: Our results indicate that neither carnivory (nutrient scarcity) nor the holokinetism have a prominent effect on size and DNA base composition of Droseraceae genomes. However, the holokinetic drive seems to affect karyotype evolution in one of the major clades of Drosera. Our survey confirmed that the evolution of GC content is tightly connected with the evolution of genome size and also with environmental conditions.
ER -
VELEBA, Adam, Petr ŠMARDA, František ZEDEK, Lucie HOROVÁ, Jakub ŠMERDA and Petr BUREŠ. Evolution of genome size and genomic GC content in carnivorous holokinetics (Droseraceae). \textit{Annals of Botany}. Oxford: Oxford University Press, 2017, vol.~119, No~1, p.~409-416. ISSN~0305-7364. Available from: https://dx.doi.org/10.1093/aob/mcw229.
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