转子子动力学驱动基因组进化,调节棉花农学特征的遗传机制
Zeyu Dong1,2,3, Shangkun Jin1,2, Yupeng Hao1,2
1Hainan Institute of Zhejiang University, Sanya 572025, China.
Plants (Basel, Switzerland)
|August 28, 2025
概括
可转移元素 (TE) 驱动棉花基因组在多体化后的演变和多样化. 特定的吉普赛元素 (Tekay) 和托克元素对产量和纤维质量等特征产生重大影响.
科学领域:
- 基因组学
- 植物生物学
- 进化生物学
背景情况:
- 可转移元素 (TE) 对于植物基因组进化至关重要,尤其是在多体化过程中.
- 对于解释表型变异的关键是了解多重化后的 TE 动态.
- 聚聚合棉 (Gossypium) 为研究这些过程提供了一个模型系统.
研究的目的:
- 在多化后调查Gossypium的可转移元素动态.
- 确定特定的TE子类及其在基因组进化和表型多样化中的作用.
- 制定与 TE 相关的结构变化 (TRV) 和它们与农业特征的关联的全面地图.
主要方法:
- 对21个双胞胎和7个多胞胎棉花基因组进行比较分析.
- 对TEs和TRV进行全基因组识别和表征.
- 整合来自256个Gossypium接入的重序数据以创建一个全TRV地图.
- 在TRV和关键的表型特征之间进行统计关联分析.
主要成果:
- 吉普赛TEs的Tekay亚类是Gossypium基因组演变的主要驱动因素,表现出高的丰富性和活性.
- 子亚类 (Gopia超级家族) 与基因区域相关,有助于适应和变异.
- 一个泛TRV地图确定了142,802个TRV,其中吉普赛元素是主要来源.
- 334个TRV与10个关键特征显著相关,包括产量组件和纤维质量.
结论:
- 可转移的元素,特别是吉普赛 (Tekay),在Gossypium基因组多样化和进化中发挥着重要作用.
- 对于了解和改进棉花的农学特征来说,TE衍生的结构变化是有价值的资源.
- 这项研究提供了棉花基因改进和分子育种的功能标记和潜在目标.
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