TAC-C揭示了作物中的开放色素相互作用和SPL介导的光合作用调节
Jingmin Kang1,2, Zhaoheng Zhang1,3, Xuelei Lin1
1Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
Science advances
|May 30, 2025
概括
我们开发了转移酶可访问的染色体构造捕获 (TAC-C) 来映射作物中的 cis-调节元素. TAC-C揭示了染色质结构如何影响基因表达和作物特征,为光合作用调节提供了洞察力.
科学领域:
- 植物生物学 植物生物学
- 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.
背景情况:
- 控制基因表达的Cis-regulatory元素 (CREs),但它们在作物中的空间组织尚不清楚.
- 了解CREs对于作物改进和适应至关重要.
研究的目的:
- 开发一种用于绘制农作物中微量染色体相互作用的新方法.
- 研究主要作物物种中染色质结构,基因表达和表型变异之间的关系.
- 探索色素相互作用在亚基因组偏差和光合作用调节中的作用.
主要方法:
- 转化酶可访问的染色体构造捕获 (TAC-C),集成ATAC-seq和Hi-C.
- 在大米,,玉米和小麦中使用TAC-C.
- 将染色体结构数据与人口遗传学和基因表达数据的整合.
主要成果:
- 在四种主要作物中,TAC-C成功捕获了细度的染色质相互作用.
- 在染色体相互作用频率和基因表达之间发现了强烈的关联,突出了保存的调节枢纽.
- 染色体环连接远端调节元素与表型变异,转位子插入有助于偏向的同质物表达.
- 通过染色体相互作用,TaSPL7/15被确定为光合作用基因的调节者,突变物显示出增强的光合作用效率.
结论:
- TAC-C是一个强大的工具,用于剖析作物中调节元素的空间组织.
- 染色体相互作用在基因表达,表型变异和作物亚基因组进化中发挥着重要作用.
- 对小麦中SPL介导的光合作用调节的洞察力为改善作物提供了途径.
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