The genomic architecture of the sex-determining region and sex-related metabolic variation in Ginkgo biloba
文献类型： 外文期刊
作者： Liao, Qinggang 1 ; Du, Ran 1 ; Gou, Junbo 1 ; Guo, Lvjun 4 ; Shen, He 1 ; Liu, Hailin 1 ; Nguyen, Julie K. 2 ; Ming, Ray; 1 ;
作者机构： 1.Chinese Acad Agr Sci, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab,Minist Agr,Agr Genom Inst Shenzhe, Shenzhen 518120, Peoples R China
2.Univ Illinois, Dept Plant Biol, Urbana, IL 61801 USA
3.Nanjing Forestry Univ, Coll Forestry, Key Lab Cultivar Innovat & Germplasm Improvement, Nanjing 210037, Peoples R China
4.Tsinghua Univ, Sch Life Sci, Tsinghua Peking Joint Ctr Life Sci, Ctr Synthet & Syst Biol,MOE Key Lab Bioinformat, Beijing 100084, Peoples R China
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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