在玉米中,ZmNPF7.10赋予和从节点到叶子的分布
Yingying Hu1,2, Man Zhang1, Kangqi Wang1
1State Key Laboratory of Plant Environmental Resilience (SKLPER), College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
The New phytologist
|January 31, 2025
概括
玉米节点通过ZmNPF7.10传送器分发重要营养物质,如 (K) 和 (N). 这种传送器将K和N从节点移动到叶子,影响植物生长和谷物产量.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 草状植物中的节点对于营养的分配至关重要,特别是对于发育的叶子和生殖器官.
- 控制植物节点中营养物质分布的分子机制尚未得到充分理解.
研究的目的:
- 为了识别和描述参与 (K) 和 (N) 在玉米节点内的分布的运输体.
- 阐明玉米中营养物质运输的分子机制.
主要方法:
- 在Xenopus卵细胞中ZmNPF7.10的功能性特征.
- 在玉米组织中分析ZmNPF7.10表达模式.
- 对ZmNPF7.10破坏突变体的表型分析.
- 自然促进子变体与转录水平和生理特征的关联分析.
主要成果:
- ZmNPF7.10以pH取决的方式表现出酸盐 (NO3-) 和 (K+) 运输活性.
- 在生殖阶段,ZmNPF7.10主要表达在玉米节点中,特别是扩大血管束 (EVB) 的体外细胞中.
- 破坏ZmNPF7.10导致叶子中的K和N减少,并在节点中积累,表明其在节点到叶子营养物质运输中的作用.
- 在ZmNPF7.10促进体中的自然7.1kb的InDel变体与转录水平,叶子营养度和谷物产量有关.
结论:
- ZmNPF7.10作为一个双重功能传送器,在玉米节点中调解K和N的分布.
- 这种转运体在从节点到叶子的营养物质分配中发挥着重要作用,影响了植物的整体营养和产量.
- 鉴定到的促进子变异为提高玉米产量的标记器辅助选择提供了潜力.
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