结构变异和3D基因组驱动的DNA/RNA甲基化分歧有助于棉纤维化
Lei Shao1,2, Shangkun Jin1, Haojie Jiang1
1Zhejiang Key Laboratory of Crop Germplasm Innovation and Utilization, Key Laboratory of Speed Breeding in Plant Factory (Ministry of Agriculture and Rural Affairs), College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 2, 2025
概括
结构变异 (SVs) 和3D基因组重塑驱动表观遗传变化,显著影响基因表达和改善化期间的棉纤维质量. 这揭示了农作物改良的关键监管网络.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 植物生物学 植物生物学
背景情况:
- 棉花的化通过未知的机制提高了纤维质量.
- 结构变异 (SVs),3D基因组架构和棉花化中的表观遗传调节的作用尚不清楚.
研究的目的:
- 研究SVs的整合性作用,3D基因组架构和棉纤维化中的表观遗传调节.
- 阐明连接SVs的调控网络,基因组架构,表观遗传学和棉花中的基因表达.
主要方法:
- 野生 (yucatanense) 和栽培 (Xinluzao 61) 棉花的基因组组合.
- 识别结构变异 (InDels,反转) 和差异甲基化区域 (DNA和RNA).
- 构建一个超密集的遗传地图和定量特征位置 (QTL) 地图.
主要成果:
- 86.6%的SV被发现在差异化的拓关联域区域,表明SV重建3D基因组架构.
- 确定了数百万个差异性的DNA和RNA甲基化位点,影响了近一半的差异表达基因.
- 与SV相关的甲基化变化对基因表达的影响比单独的表观遗传修饰更大.
- SVs和3D基因组重建驱动的甲基化分歧有助于增加化棉花中的纤维长度.
结论:
- 这项研究阐明了棉花纤维化中的一个关键的"SVs-3D基因组改造-表观遗传修饰-基因表达"级联调控网络.
- 这些发现为纤维作物中的分子设计育种提供了理论基础和遗传资源.
- 在作物化过程中,结构变异在重塑特征变异方面发挥着关键作用.
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