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Updated: Jun 12, 2025

Detection of Histone Modifications in Plant Leaves

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Published on: September 23, 2011

植物ADH1促进剂作为H3K27me3相关的超长冷反应促进剂

Hanako Shimizu¹, Haruki Nishio^1,2, Hiroshi Kudoh¹

¹Center for Ecological Research, Kyoto University, Hirano 2-509-3, Otsu, 520-2113, Japan.

The Plant journal : for cell and molecular biology

|June 9, 2025

概括

基因促进者可以使植物在一周的环境反应 (WERs) 中产生反应,影响诸如开花时间之类的特征. 酒精脱酶1促进体在蛋白质和表型水平上赋予长期记忆,独立于mRNA变化.

科学领域:

植物分子生物学植物分子生物学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
环境适应环境适应

背景情况:

生物需要长期记忆来适应环境波动.
基因促进剂在赋予周级环境反应 (WERs) 中的作用及其潜在机制尚未完全理解.
调查像H3K27me3这样的基因组修饰,为表观遗传记忆提供了洞察力.

研究的目的:

为了确定在Arabidopsis halleri.中赋予WERs的基因促进体.
阐明促进体在各种分子水平上调解环境反应的机制.
为了确定单独的促进子序列是否能够赋予长期的环境响应性.

主要方法:

在Arabidopsis halleri.中使用1年时间序列H3K27me3数据对WER促进体进行全基因组选.
使用Arabidopsis thaliana促进者-报告者线对选定的WER促进者特征进行分析.
将ADH1促进体与记者基因 (GUS) 和特定编码区域 (FLC,PIF4) 融合以评估WERs.

主要成果:

在A. halleri中,酒精脱酶1 (ADH1) 促进体在H3K27me3水平上表现出WERs,对2周的低温有反应,但对1天的低温没有反应.
对GUS报告者的ADH1促进体的融合赋予了蛋白质水平的WER,独立于mRNA反应.
在与FLC和PIF4相融合时,ADH1促进剂修改了开花和树枝延长表型的WER,并带来了非常规的方向变化.

结论:

仅A. halleri的ADH1促进剂就能在表型,蛋白质和H3K27me3水平上赋予周规模的环境反应能力.
促进者可以作为长期环境记忆的关键元素,可能影响基因表达和表型可塑性.
这项研究揭示了一种通过促进器介导的表观遗传记忆来适应环境的新机制.

关键词:

在ADH1中,ADH1被认为是ADH1.阿拉比多普西斯 (Arabidopsis halleri) 是一种植物.H3K27me3 在线阅读活动主办人活动主办人适应季节性的适应.热反应的热反应每周规模的环境响应.

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