The genomic architecture of the sex-determining region and sex-related metabolic variation in Ginkgo biloba

文献类型： 外文期刊

第一作者： Liao, Qinggang

作者： Liao, Qinggang;Du, Ran;Gou, Junbo;Shen, He;Liu, Hailin;Huang, Sanwen;Yan, Jianbin;Nguyen, Julie K.;Ming, Ray;Liu, Hailin;Yin, Tongming;Guo, Lvjun

作者机构：

关键词： Flavonoid; Ginkgo biloba; gymnosperm; secondary metabolism; sex determination

期刊名称：PLANT JOURNAL （ 影响因子：6.417； 五年影响因子：7.627 ）

ISSN： 0960-7412

年卷期：

页码：

收录情况： SCI

摘要： Sex differences and evolutionary differences are critical biological issues. Ginkgo is an ancient lineage of dioecious gymnosperms with special value for studying the mechanism of sex determination in plants. However, the major genetic basic underlying sex chromosomes remains to be uncovered. In this study, we identify the sex-determining region of Ginkgo and locate it to the area from megabases 48 to 75 on chromosome 2. We find that the male sex-determining region of Ginkgo contains more than 200 genes, including four MADS-box genes, demonstrating that the Ginkgo sex determination system is of the XY type. We also find that genetic sex differences result in specialized flavonoid metabolism and regulation in each sex. These findings establish a foundation for revealing the molecular mechanism of sexual dimorphism and promoting the development of the Ginkgo industry.

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