Whole-genome sequence of a flatfish provides insights into ZW sex chromosome evolution and adaptation to a benthic lifestyle

文献类型： 外文期刊

第一作者： Chen, Songlin

作者： Chen, Songlin;Shao, Changwei;Song, Wentao;Sha, Zhenxia;Xie, Mingshu;Wang, Na;Yang, Changgeng;Liao, Xiaolin;Hu, Qiaomu;Meng, Liang;Tian, Yongsheng;Yang, Jingfeng;Miao, Guidong;Liu, Shanshan;Liang, Zhuo;Yan, Fang;Li, Yangzhen;Sun, Bin;Zhang, Hong;Zhang, Jing;Zhu, Ying;Du, Min;Zhao, Yongwei;Tang, Qisheng;Zhang, Guojie;Huang, Quanfei;Liu, Geng;Zhang, Pei;An, Na;Li, Qiye;Zhou, Heling;Yu, Qiulin;Wu, Kui;Zhou, Qian;Yang, Linfeng;Zhang, Jilin;Jin, Lijun;Lian, Jinmin;Wang, Jun;Chalopin, Domitille;Volff, Jean-Nicolas;Hong, Yunhan;Xiang, Hui;Schartl, Manfred;Schartl, Manfred;Wang, Jun;Wang, Jun;Liu, Yang

作者机构：

期刊名称：NATURE GENETICS （ 影响因子：38.33； 五年影响因子：36.431 ）

ISSN： 1061-4036

年卷期： 2014 年 46 卷 3 期

页码：

收录情况： SCI

摘要： Genetic sex determination by W and Z chromosomes has developed independently in different groups of organisms. To better understand the evolution of sex chromosomes and the plasticity of sex-determination mechanisms, we sequenced the whole genomes of a male (ZZ) and a female (ZW) half-smooth tongue sole (Cynoglossus semilaevis). In addition to insights into adaptation to a benthic lifestyle, we find that the sex chromosomes of these fish are derived from the same ancestral vertebrate protochromosome as the avian W and Z chromosomes. Notably, the same gene on the Z chromosome, dmrt1, which is the male-determining gene in birds, showed convergent evolution of features that are compatible with a similar function in tongue sole. Comparison of the relatively young tongue sole sex chromosomes with those of mammals and birds identified events that occurred during the early phase of sex-chromosome evolution. Pertinent to the current debate about heterogametic sex-chromosome decay, we find that massive gene loss occurred in the wake of sex-chromosome 'birth'.

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