本体阶段相关的SA反应有助于叶子年龄依赖的抵抗在Arabidopsis和棉花
Lanxi Hu1, Jovana Mijatovic1, Feng Kong1
1Department of Plant Pathology, College of Agricultural and Environmental Sciences, University of Georgia, Athens, GA, United States.
Frontiers in plant science
|August 13, 2024
概括
植物叶子对病原体产生年龄相关的耐药性,酸 (SA) 信号在成熟过程中增加. 年轻的叶子更容易受到影响,突出显示了像阿拉比多普西斯和棉花等植物的本体性耐药性策略.
科学领域:
- 植物生物学 植物生物学
- 植物免疫力 植物免疫力
- 发育生物学是发展生物学.
背景情况:
- 发展中的叶子从受保护的环境过渡到暴露的环境,需要适应微生物挑战.
- 了解植物在器官发育过程中如何平衡生长与防御,对于植物健康至关重要.
研究的目的:
- 为了研究酸 (SA) 在Arabidopsis.com的叶子发育过程中的年龄依赖性耐药性中的作用.
- 为了确定这种本体性耐药性的模式是否在其他植物物种中保持,例如棉花.
主要方法:
- 评估了Arabidopsis.在叶子成熟期间的SA积累和反应.
- 测试了年轻与成熟的阿拉比多普西斯叶子对Pseudomonas syringae pv.的敏感性. 番茄 DC3000. 番茄 DC3000. 番茄 DC3000. 番茄 DC3000. 番茄 DC3000. 番茄 DC3000 番茄 番茄 番茄 番茄 番茄 番茄
- 检查了年轻棉花叶的SA信号和病原体敏感性.
主要成果:
- 在Arabidopsis的叶子成熟期间,SA反应暂时增加,独立于微生物暴露.
- 年轻的Arabidopsis叶子比成熟的叶子更容易受到细菌感染.
- 在棉花中观察到与SA信号减少的年轻叶子增加敏感性的类似模式.
结论:
- 酸介导的本体性耐药性是Arabidopsis中的一个关键的发展策略.
- 这种依赖年龄的免疫反应在木质多年生棉花中得到保护,这表明植物防御的基本机制.
相关概念视频
Responses to Salt Stress
13.1K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.1K
Adaptations that Reduce Water Loss
25.4K
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.
25.4K
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
Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
Defenses Against Pathogens and Herbivores
23.4K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
23.4K
Plant Cell Wall
56.4K
The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
56.4K


