转录因子OsWRKY72通过调节LAZY1介导的发芽重力化来控制大米叶的角度
Lei Liu1,2, Lirong Zhao1,2, Yunwei Liu3
1CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China.
Plant physiology
|March 13, 2024
概括
叶角对于种植和产量至关重要,由OsWRKY72.7积极调节. 这种WRKY转录因子通过抑制LAZY1和影响重力化,促进更大的叶角.
科学领域:
- 植物遗传学和分子生物学
- 农业科学 农业科学
背景情况:
- 叶角是理想植物架构的关键决定因素,显著影响米种植和谷物产量.
- 控制大米叶角调节的分子机制尚未完全理解,尽管已经确定了一些相关突变.
研究的目的:
- 为了阐明在大米中底层的叶片角确定的分子机制.
- 为了识别和描述参与调节大米叶倾斜的新型基因.
主要方法:
- 基因表达分析 (定量PCR)
- 突变和过度表达线的表型分析.
- 生物信息学分析以确定下游目标.
- 电泳运动转移试验 (EMSA) 和双露西法酶记者试验,以确认基因调节.
主要成果:
- OsWRKY72是一种WRKY转录因子,在大米叶和叶片关节中高度表达.
- oswrky72突变体呈现较小的叶角,而OsWRKY72过度表达线显示增加的叶角,表明OsWRKY72积极调节叶角.
- OsWRKY72通过与其促进体结合,直接抑制LAZY1的表达.
- OsWRKY72的淘汰赛增强了射击重力学,与惰1突变物形成鲜明对比,这表明OsWRKY72通过重力学调节叶角,通过降低LAZY1.1.
- OsWRKY72还直接调节其他与叶角相关的基因,包括OsFTL12和OsWAK11.
结论:
- OsWRKY72作为叶角的积极调节者.
- OsWRKY72-LAZY1调节通路通过调节发射重力变来影响叶角.
- OsWRKY72代表了一种潜在的米架构和产量的基因改进目标.
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