PHT1;5 被ANT抑制 介导Pi在低Pi和盐度下在盐中获得和分布
Duoliya Wang1,2, Sulian Lv1,2, Zijing Guo1,2
1Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
Plant & cell physiology
|September 27, 2023
概括
盐 (Eutrema salsugineum) 使用EsPHT1;5基因来增强对盐度和低酸盐 (Pi) 条件的耐受性. 该基因对Pi的获取和分布至关重要,其表达和植物应激反应受到调节因素的影响.
科学领域:
- 植物生物学 植物生物学
- 无生物压力生理学 生物压力生理学
- 分子遗传学 分子遗传学
背景情况:
- 盐度和酸盐 (Pi) 饥饿是影响作物产量的主要非生物压力.
- 盐 (Eutrema salsugineum) 对这两种压力都表现出自然的耐受性.
- 酸盐载体 (PHT) 基因与植物对这些条件的反应有关.
研究的目的:
- 在低 Pi 和盐度下,描述盐中 EsPHT1;5 基因的功能.
- 研究EsPHT1;5在获取,转移和植物应激耐受性中的作用.
- 为了确定参与Pi饥饿和盐度信号之间的交叉对话的调节因素.
主要方法:
- 基因过度表达和敲击在盐.
- 对含量和芽/根比率的分析.
- 酸盐吸收试验. 酸盐吸收试验.
- 促进剂活性测定比较EsPHT1;5和AtPHT1;5.5.
- 转录因子EsANT的识别和表征.
主要成果:
- 过度表达EsPHT1;5增强了盐对低Pi和盐度的耐受性.
- 对EsPHT1;5的抑制导致生长迟缓.
- EsPHT1;5 在Pi获取和根到芽转移中发挥作用.
- EsPHT1;5在盐应激下促进Pi调动,其促进剂在盐度下表现出比AtPHT1;5.5更高的活性.
- 转录因子EsANT负面调节EsPHT1;5表达和植物对低Pi和盐度的耐受性.
结论:
- EsPHT1;5是Pi获取和分布的组成部分,调解植物对低Pi和盐应激的反应.
- EsANT参与了Pi饥饿和盐度信号通路之间的交叉对话.
- 这项研究阐明了盐中高利用效率的机制,并将Pi和盐的信号通路联系起来.
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