MdSnRK1.1与MdGLK1相互作用,以调节酸中介的绿素在果中的积累
Yu-Ying Yang1,2, Xiu-Hong An3, Lin Rui1
1State Key Laboratory of Crop Biology, Apple Technology Innovation Center of Shandong Province, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An 271018, Shandong, China.
Horticulture research
|February 19, 2024
概括
亚酸 (ABA) 通过激活MdSnRK1.1.1,减少果中的叶绿素. 这种激酶酸化MdGLK1,将其向降解并抑制叶绿素的产生.
科学领域:
- 植物生物学 植物生物学
- 分子植物科学 分子植物科学
- 植物中的荷尔蒙调节
背景情况:
- 酸 (ABA) 是一种植物激素,参与各种生理过程.
- 已知ABA在叶子化 (黄化) 中的作用,但其分子机制尚不清楚.
- 叶绿素的积累对光合作用和植物健康至关重要.
研究的目的:
- 为了阐明ABA影响果中叶绿素积累的分子机制.
- 为了确定关键的蛋白质和相互作用参与ABA介导的化.
- 了解糖不发酵1相关蛋白激酶1.1 (SnRK1.1) 在这个过程中的作用.
主要方法:
- 在果植物 (Malus × domestica) 上进行ABA处理.
- 在MdSnRK1.1和MdGLK1.1之间进行了蛋白质-蛋白质相互作用研究.
- 对MdGLK1.1的酸化位点分析.
- 对MdGLK1与MdHEMA1促进体结合的分析.
主要成果:
- ABA治疗降低了果叶中的叶绿素积累.
- MdSnRK1.1被确定为ABA对叶绿素的影响中的关键参与者.
- MdSnRK1.1与MdGLK1在Ser468相互作用并酸化,降低了其稳定性.
- 由MdSnRK1.1进行酸化对于MdGLK1与MdHEMA1促进体结合至关重要,从而抑制叶绿素合成.
结论:
- ABA激活了MdSnRK1.1,这导致了MdGLK1.1的降解.
- 这一途径抑制了叶绿素的积累,导致叶子化.
- MdSnRK1.1在平衡植物生长和ABA诱导反应方面发挥着至关重要的作用.
相关概念视频
01:25Cell Signaling in Plants
5.6K
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...
5.6K
01:57Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K