细胞核相互作用调节光合作用节律性和野生大麦生长的可塑性
Lalit Dev Tiwari1, Eyal Bdolach1,2, Manas Ranjan Prusty1
1Plant Sciences Institute, Volcani Agricultural Research Organization (ARO), Bet Dagan, Israel.
Physiologia plantarum
|February 14, 2024
概括
植物昼夜钟的可塑性受细胞核相互作用的影响. 特定的基因组合,如RpoC1和SIG-B,调节热反应和植物生长,表明适应性价值.
科学领域:
- 植物生物学 植物生物学
- 遗传学 遗传学 是一个
- 循环节律是指循环节律的节奏.
背景情况:
- 塑体 (线粒体和叶绿体) 在植物昼夜钟可塑性和细胞核相互作用中的作用仍然不清楚.
- 了解这些相互作用对于植物适应环境变化至关重要.
研究的目的:
- 调查细胞核相互作用对野生大麦的昼夜钟可塑性的贡献.
- 识别特定的基因及其相互作用,影响植物对热的反应并影响生长.
主要方法:
- 野生大麦B1K集合的全基因组关联研究 (GWAS).
- 分析核基因和叶绿素基因之间的非随机分离和表现.
- 基因表达分析,时间生长和光合作用测量.
- 在Arabidopsis中大麦RpoC1等位基因的过度表达和诱导突变的分析.
主要成果:
- 在Drivers of Clocks (DOCs) 位点和RpoC1之间发现了重叠,表明了细胞核相互作用.
- 含有SIGMA FACTOR-B (SIG-B) 的DOC1.1,影响昼夜门和热反应.
- DOCs loci 与差异生长,叶绿素含量和量子产量有关.
- 过度表达RpoC1等位基因和对rpoB1突变的分析证明了Plastid编码聚合酶 (PEP) 复合体在时钟可塑性中的作用.
结论:
- 特定的细胞核相互作用,特别是RpoC1 (PEP复合体) 和SIG-B之间的相互作用,是热应激下昼夜时间的关键调节者.
- 这些相互作用对植物生长产生类效应,表明具有显著的适应价值.
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