在谷物作物中,MADS8在高环境温度下对雌性生殖发育至关重要
Chaoqun Shen1,2, Yueya Zhang1, Gang Li2
1Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 20040, China.
The Plant cell
|September 22, 2023
概括
高温会破坏谷物作物的繁殖,影响花的发展. 在温度压力下,MADS8基因对于维持和卵子发育至关重要,确保繁殖成功.
科学领域:
- 植物生物学 植物生物学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 温度是植物生长和多样性的关键调节者.
- 保持植物器官发育稳定性对于在温度波动下植物繁殖至关重要.
- 连接植物花发育和温度反应的机制尚不清楚.
研究的目的:
- 研究MADS8基因在花器官发育和大麦和大米温度反应中的作用.
- 阐明MADS8集成温度线索以实现繁殖稳定性的分子机制.
主要方法:
- 在大麦和大米中产生了MADS8基因的功能丧失突变.
- 利用特定组织的标记物和转录组分析来研究基因功能.
- 在目标下进行了切割和标记 (CUT&Tag) 试验,以分析基因结合.
- 研究了HvMADS8与D类花同源基因的直接结合.
主要成果:
- 在两种物种中,在高温下,MADS8突变体表现出多个手,缺少卵子.
- 在高温下,HvMADS8对于花干系的确定性和卵子启动至关重要.
- 转录组分析显示,HVMADS8调节了参与花器官和花系统发育的基因.
- HvMADS8的活性取决于温度,涉及促进体结合的增加和D类基因正基因的直接激活.
结论:
- 在谷物作物中,MADS8在维持茎数量和卵子启动方面发挥着保守的作用.
- 这项研究扩展了MADS盒蛋白在调节花器官发育中的已知功能.
- HvMADS8充当了植物繁殖成功的温度信号的关键集成者.
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