Evolution of sex determination and heterogamety changes in section Otites of the genus Silene

0503002 - BFÚ 2019 GB eng J - Článek v odborném periodiku
Balounova, Veronika - Gogela, Roman - Čegan, Radim - Cangren, P. - Žlůvová, Jitka - Šafář, Jan - Kováčová, Viera - Bergero, R. - Hobza, Roman - Vyskot, Boris - Oxelman, B. - Charlesworth, D. - Janoušek, Bohuslav
Evolution of sex determination and heterogamety changes in section Otites of the genus Silene.
Scientific Reports. Roč. 9, JAN 31 2019 (2019), č. článku 1045. ISSN 2045-2322. E-ISSN 2045-2322
Grant CEP: GA ČR GA13-06264S; GA ČR(CZ) GA18-06147S; GA ČR GA16-08698S
Institucionální podpora: RVO:68081707 ; RVO:61389030
Klíčová slova: y-chromosome * dioecious plant * male-sterility * genome structure
Obor OECD: Developmental biology; Developmental biology (UEB-Q)
Impakt faktor: 3.998, rok: 2019
Způsob publikování: Open access
https://www.nature.com/articles/s41598-018-37412-x.pdf

Switches in heterogamety are known to occur in both animals and plants. Although plant sex determination systems probably often evolved more recently than those in several well-studied animals, including mammals, and have had less time for switches to occur, we previously detected a switch in heterogamety in the plant genus Silene: section Otites has both female and male heterogamety, whereas S. latifolia and its close relatives, in a different section of the genus, Melandrium (subgenus Behenantha), all have male heterogamety. Here we analyse the evolution of sex chromosomes in section Otites, which is estimated to have evolved only about 0.55 MYA. Our study confirms female heterogamety in S. otites and newly reveals female heterogamety in S. borysthenica. Sequence analyses and genetic mapping show that the sex-linked regions of these two species are the same, but the region in S. colpophylla, a close relative with male heterogamety, is different. The sex chromosome pairs of S. colpophylla and S. otites each correspond to an autosome of the other species, and both differ from the XY pair in S. latifolia. Silene section Otites species are suitable for detailed studies of the events involved in such changes, and our phylogenetic analysis suggests a possible change from female to male heterogamety within this section. Our analyses suggest a possibility that has so far not been considered, change in heterogamety through hybridization, in which a male-determining chromosome from one species is introgressed into another one, and over-rides its previous sex-determining system.
Trvalý link: http://hdl.handle.net/11104/0294837