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Patterns of molecular evolution in dioecious and non-dioecious Silene
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SYSNO ASEP 0440410 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Patterns of molecular evolution in dioecious and non-dioecious Silene Author(s) Kaefer, J. (FR)
Talianová, Martina (BFU-R)
Bigot, T. (FR)
Michu, Elleni (BFU-R)
Gueguen, L. (FR)
Widmer, A. (CH)
Žlůvová, Jitka (BFU-R) RID, ORCID
Glemin, S. (FR)
Marais, G.A.B. (FR)Number of authors 9 Source Title Journal of Evolutionary Biology - ISSN 1010-061X
Roč. 26, č. 2 (2013), s. 335-346Number of pages 12 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords purifying selection ; reproductive systems ; Silene latifolia Subject RIV BO - Biophysics R&D Projects GA521/08/0932 GA ČR - Czech Science Foundation (CSF) GD204/09/H002 GA ČR - Czech Science Foundation (CSF) GBP501/12/G090 GA ČR - Czech Science Foundation (CSF) Institutional support BFU-R - RVO:68081707 UT WOS 000313747600020 DOI 10.1111/jeb.12052 Annotation Dioecy (i.e. having separate sexes) is a rather rare breeding system in flowering plants. Such rareness may result from a high probability of extinction in dioecious species because of less efficient dispersal and the costs of sexual selection, which are expected to harm dioecious species' survival on the long term. These handicaps should decrease the effective population size (Ne) of dioecious species, which in turn should reduce the efficacy of selection. Moreover, sexual selection in dioecious species is expected to specifically affect some genes, which will evolve under positive selection. The relative contribution of these effects is currently unknown and we tried to disentangle them by comparing sequence evolution between dioecious and non-dioecious species in the Silene genus (Caryophyllaceae), where dioecy has evolved at least twice. For the dioecious species in the section Melandrium, where dioecy is the oldest, we found a global reduction of purifying selection, while on some, male-biased genes, positive selection was found. For section Otites, where dioecy evolved more recently, we found no significant differences between dioecious and non-dioecious species. Workplace Institute of Biophysics Contact Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244 Year of Publishing 2015
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