The genomic architecture of the sex‐determining region and sex‐related metabolic variation in Ginkgobiloba,The Plant Journal

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The genomic architecture of the sex‐determining region and sex‐related metabolic variation in Ginkgobiloba
The Plant Journal ( IF 6.2 ) Pub Date : 2020-10-04 , DOI: 10.1111/tpj.15009
Qinggang Liao ₁ , Ran Du ₁ , Junbo Gou ₁ , Lvjun Guo ₂ , He Shen ₁ , Hailin Liu _{1,

3} , Julie K Nguyen ₄ , Ray Ming ₄ , Tongming Yin ₃ , Sanwen Huang ₁ , Jianbin Yan ₁

Affiliation

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.

中文翻译：

银杏叶性别决定区的基因组结构和性别相关的代谢变异

性别差异和进化差异是至关重要的生物学问题。银杏是一种古老的雌雄异体的裸子植物，对研究植物性别决定机制具有特殊价值。然而，主要的遗传基础性染色体尚待发现。在这项研究中，我们确定了银杏的性别决定区域，并将其定位在第2号染色体上从48到75的大碱基区域。我们发现，银杏的男性性别决定区域包含200多个基因，包括四个MADS-box基因，证明银杏性别确定系统为XY类型。我们还发现，遗传性别差异会导致每种性别中的专门类黄酮代谢和调节。这些发现为揭示性二态性的分子机制和促进银杏产业的发展奠定了基础。

更新日期：2020-12-01

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