MaizeCODE揭示了双向表达的增强剂,这些增强剂含有玉米化的分子特征
Jonathan Cahn1, Michael Regulski2, Jason Lynn1
1Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY, 11724, USA.
Nature communications
|December 31, 2024
概括
玉米的化涉及复杂的遗传变化. MaizeCODE绘制了监管区域的地图,揭示了驱动关键特征的增强剂,并揭示了与可转化元素的冲突.
科学领域:
- 基因组学就是基因组学.
- 植物生物学 植物生物学
- 分子进化分子进化
背景情况:
- 玉米 (Zea mays ssp. 这种玉米有很多种. 梅斯) 从teosinte化涉及显著的形态变化.
- 复杂的调节网络,涉及转录因子,控制这些养特征.
- 了解玉米基因组调节对于作物改进至关重要.
研究的目的:
- 用ENCODE策略对玉米基因组中的监管区域进行目录.
- 调查玉米化特征的监管基础.
- 识别玉米和茶色素中的新型监管元素及其功能.
主要方法:
- 在MaiseCODE项目中,使用ENCODE策略进行全基因组监管区域目录.
- 在5个组织和3个玉米杂交线,加上一条teosinte线上生成了基因组修饰和转录因子ChIP-seq数据.
- 进行并行转录学分析以整合调控和表达数据.
主要成果:
- 确定了玉米和茶色素组织中的综合监管区域.
- 发现了表达非编码增强子RNA的远端增强剂,类似于动物超级增强剂.
- 在基因表达和调节区域观察到化特征的回顾,增强剂活性与可转移元素沉默相冲突.
结论:
- 玉米基因组调节是复杂的,增强剂在化中发挥着关键作用.
- 像增强剂RNAs这样的新型调控元素为玉米的进化和发展提供了洞察力.
- 这项研究强调了塑造玉米形态和基因组结构的监管冲突.
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