斯特里戈拉克顿通过MsABI5-MsSMXL1-MsNAC022级联增强果的抗干旱能力
Xiang Zhang1, BingYang Du1, Maihemuti Turupu1
1Frontiers Science Center for Molecular Design Breeding, College of Horticulture, China Agricultural University, No.2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China.
Horticulture research
|May 21, 2025
概括
斯特里戈拉克顿 (SLs) 通过激活MsABI5-MsSMXL1-MsNAC022通路来增强果的抗干旱能力. 这种级联增强了proline的积累,改善了干旱压力条件下的植物生存.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 压力生理学 压力生理学
背景情况:
- 干旱压力显著影响果 (Malus) 的生长和产量.
- 众所周知,黄素 (SLs) 和酸 (ABA) 在植物抗旱方面具有协同作用,但根本的分子机制尚未完全理解.
研究的目的:
- 阐明SLs在果中赋予干旱抵抗力的分子机制.
- 为了研究在SL介导的干旱反应途径中ABSCISIC ACID INSENSITIVE5 (MsABI5) 的作用.
主要方法:
- 在干旱条件下的基因表达分析.
- 促进体结合测试以确定转录因子相互作用.
- 对涉及SL和ABA信号元件的基因调控网络的分析.
主要成果:
- 在Malus sieversii的干旱压力期间,SLs对MsABI5的表达进行上调.
- MsABI5通过上调 MsP5CS2.2 和抑制 MsSMXL1.1,激活了普林的积累.
- MsABI5通过 MsSMXL1-MsNAC022 调节节点间接增强抗旱能力,从而促进 MsP5CS2.2 的表达.
结论:
- SLs通过一个涉及MsABI5,MsSMXL1和MsNAC022.02的途径来增强果的抗干旱能力.
- 这种级联导致林积累增加,这是缓解干旱压力影响的关键因素.
相关概念视频
Adaptations that Reduce Water Loss
25.0K
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.
25.0K
Responses to Drought and Flooding
10.6K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.6K
Regulation of Transpiration by Stomata
27.7K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
27.7K
Cell 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
Short-distance Transport of Resources
15.6K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
15.6K


