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复制基因调节网络的动力学,控制棉花纤维的多重复合后的发展

Xianpeng Xiong¹, De Zhu¹, Lian Duan²

¹Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China.

The New phytologist

|October 9, 2025

概括

这项研究揭示了控制棉花纤维发育的关键基因调节网络 (GRNs). 它从A亚基因组中确定了特定的转录因子 (TF) 作为关键的调节者,为多倍体基因组学提供了洞察力.

科学领域:

植物基因组学植物基因组学
分子生物学分子生物学
棉花研究棉花研究

背景情况:

棉纤维的发展依赖于复杂的全基因组基因调节网络 (GRNs),这些网络尚未完全理解.
研究这些GRNs对于提高棉纤维质量和产量至关重要.

研究的目的:

通过使用集成的多omics数据,全面分析棉纤维GRNs.
识别新型的转录因子 (TF) 并了解它们在纤维发育中的调节作用.
探索亚基因组贡献和调控进化在全聚聚类棉花.

主要方法:

公共RNA-seq数据集的综合分析,包括基因组,转录组和基因组数据.
共同表达网络分析以确定监管连接和动态.
使用外部数据集和转录因子结合站点数据进行验证.
基因表达和A和D亚基因组之间的基因表达和网络关系的比较分析.

主要成果:

详细的纤维共同表达动态和调节连接被阐明.
确定了以前未知的调节纤维功能和纤维素合成的TFs.
发现两个同源的类似G2的TFs可以调节棉纤维的长度.
揭示了不对称的亚基因组贡献,尽管D亚基因组偏差在整体基因表达中,但A亚基因组TFs优先调节纤维GRN.
在多重化后,TFs的跨监管角色的多样化速度比cis-regulatory元素更快.

结论:

网络分析对于识别复杂生物过程中的主调节者是有效的.
这项研究为棉花纤维的发展和多倍体功能基因组学提供了新的视角.
了解亚基因组调节作用为棉纤维的基因改进提供了目标.

关键词:

在 GhMYS1 里面.纤维发展纤维发展基因调控网络 (GRN) 是一种基因调控网络.转录因子是一种转录因子.高地棉花,高地棉花.

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