PlOBP1/PlDAM-PlSOC1模块调节了对低温的反应中的芽休眠过渡
Xiaobin Wang1,2, Xiaoxuan Chen1, Kaijing Zhang1
1Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang, China.
Plant, cell & environment
|October 1, 2025
概括
在植物中,低温触发了芽休眠过渡 (BDT). 研究人员将PlSOC1确定为BDT的关键促进者,并发现PlOBP1是负调节者,揭示了植物休眠期的新见解.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 芽休眠过渡 (BDT) 对于植物的生存至关重要,受到低温等环境线索的调节.
- 控制BDT的精确分子机制在很大程度上仍未被阐明.
研究的目的:
- 为了确定草木 (Paeonia lactiflora) 中的芽休眠过渡 (BDT) 的关键调节者.
- 阐明底层的分子机制低温介导BDT和吉伯雷利克酸 (GA) 的作用.
主要方法:
- 使用自然和受控的低温来识别对低温敏感的基因.
- 对转录因子结合促进区域的分析.
- 吉伯酸 (GA) 处理实验.
- 蛋白质与蛋白质相互作用的研究.
主要成果:
- 一个MADS盒子基因,CO1过度表达抑制剂 (PlSOC1),被确定为BDT和低冷却要求的促进者.
- 一种DOF转录因子,OBF结合蛋白1 (PlOBP1),通过与PlSOC1促进体结合来负面调节BDT.
- PlOBP1与PlDAM相互作用,以增强PlSOC1的转抑制.
- 外源性GA治疗通过抑制PLOBP1和诱导PlSOC1来模拟冷却,从而促进BDT.
结论:
- PlSOC1和PLOBP1是低温诱导的芽休眠过渡 (BDT) 的关键调节者.
- 通过调节PLOBP1和PlSOC1.1的表达,GA在BDT中发挥着至关重要的作用.
- DOF (PlOBP1) 和MADS-box (PlSOC1,PlDAM) 蛋白质之间的相互作用为芽休眠调节提供了机制性的见解.
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