Independent origin of sex chromosomes in two species of the genus Silene

被引：45

作者：

Mrackova, Martina ^{[1
]}

Nicolas, Michael ^{[2
]}

Hobza, Roman ^{[1
]}

Negrutiu, Ioan ^{[2
]}

Moneger, Francoise ^{[2
]}

Widmer, Alexander ^{[3
]}

Vyskot, Boris ^{[1
]}

Janousek, Bohuslav ^{[1
]}

机构：

[1] Acad Sci Czech Republic, Inst Biophys, Lab Plant Dev Genet, CZ-61265 Brno, Czech Republic

[2] CNRS INRA UCBL Lab Reprod & Dev Plantes, Ecole Normale Super Lyon, F-69364 Lyon, France

[3] ETH, Inst Integrat Biol, CH-8092 Zurich, Switzerland

来源：

GENETICS | 2008年 / 179卷 / 02期

关键词：

D O I：

10.1534/genetics.107.085670

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Here we introduce a new model species, Silene colpophylla, that could facilitate research of sex chromosome evolution and sex-determining systems. This species is related to the well-established dioecious plant model Silene latifolia. Our results show that S. colpophylla is, similarly to S. latifolia, a male heterogametic species, but its sex chromosomes have evolved from a different pair of autosomes than in S. latifolia. The results of our phylogenetic study and mapping of homologs of S. latifolia X-linked genes indicate that the sex determination system in S. colpophylla evolved independently from that in S. latifolia. We assert that this model species pair will make it possible to study two independent patterns of sex chromosome evolution in related species.

引用

页码：1129 / 1133

页数：5

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