J 2017

Evolution of genome size and genomic GC content in carnivorous holokinetics (Droseraceae)

VELEBA, Adam, Petr ŠMARDA, František ZEDEK, Lucie HOROVÁ, Jakub ŠMERDA et. al.

Basic information

Original name

Evolution of genome size and genomic GC content in carnivorous holokinetics (Droseraceae)

Name in Czech

Evoluce velikosti genomu a genomického obsahu GC u masožravých holokinetických rostlin (Droseraceae)

Authors

VELEBA, Adam (203 Czech Republic, belonging to the institution), Petr ŠMARDA (203 Czech Republic, belonging to the institution), František ZEDEK (203 Czech Republic, belonging to the institution), Lucie HOROVÁ (203 Czech Republic, belonging to the institution), Jakub ŠMERDA (203 Czech Republic, belonging to the institution) and Petr BUREŠ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Annals of Botany, Oxford, Oxford University Press, 2017, 0305-7364

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10611 Plant sciences, botany

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

Impact factor

Impact factor: 3.646

RIV identification code

RIV/00216224:14310/17:00094583

Organization unit

Faculty of Science

UT WoS

000396935400013

Keywords (in Czech)

Obsah DNA; Droseraceae; masožravé rostliny; průtoková cytometrie, evoluce velikosti genomu; genomický GC obsah; genomické složení bází; holocentrické chromosomy, holokinetické chromosomy

Keywords in English

DNA content; Droseraceae; carnivorous plants; flow cytometry; genome size evolution; GC content;DNA base composition; holocentric chromosomes; holokinetic chromosomes

Tags

Tags

International impact, Reviewed
Changed: 3/4/2018 15:14, Ing. Nicole Zrilić

Abstract

V originále

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.

Links

GA13-29362S, research and development project
Name: Evoluce holocentrických chromosomů (Acronym: EvoHolo)
Investor: Czech Science Foundation
GA14-30313S, research and development project
Name: Vliv prostředí na evoluci genomové architektury rostlin v lokálním a regionálním měřítku
Investor: Czech Science Foundation