番茄中CIPK1调节的转录因子NAM3坐标的分枝和酸盐的积累
Jiachun Wang1,2, Jiajia Li2, Yufei Dong2
1College of Horticulture, Northwest Agriculture and Forestry University, Yangling, Shaanxi, 712100, China.
The New phytologist
|August 30, 2025
概括
低酸盐水平会在番茄植物中触发NAM3,控制芽枝和酸盐的吸收. 这一发现为提高农作物中利用效率提供了新的目标.
科学领域:
- 植物生物学
- 分子遗传学
- 农业科学
背景情况:
- 酸盐对植物生长和发育至关重要, 作为营养素和信号分子.
- 树枝分支受的可用性影响,并影响使用效率 (NUE),但监管机制尚未完全理解.
研究的目的:
- 阐明植物因低酸盐可用性而调节芽分枝和酸盐积累的分子机制.
- 鉴定中介增长调节中的关键基因和信号通路.
主要方法:
- 用RNA测序 (RNA-seq) 来识别对酸盐敏感的基因.
- 基因分析以确定基因功能和调节关系.
- 生物化学测试以调查蛋白质相互作用和化事件.
主要成果:
- 一个NAC转录因子NAM3被确定为对低酸盐的反应,并通过促进BRC1转录来抑制侧向芽生长.
- 通过对酸盐输送基因NRT1.7进行上调,NAM3增强了酸盐的积累.
- CBL3- CIPK1复合物化NAM3,增加其在BRC1和NRT1. 7上的稳定性和转录活性.
结论:
- 在低酸盐反应中,CIPK1调节的NAM3是树苗分枝和酸盐积累的关键媒介.
- NAM3在协调这些过程中的双重作用使其成为改善 NUE 的基因改造的潜在目标.
相关概念视频
Key Elements for Plant Nutrition
21.2K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
21.2K
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Primary and Secondary Growth in Roots and Shoots
58.0K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
58.0K
Riboswitches
8.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.5K


