雅斯蒙酸信号通路通过阿拉比多普西斯中的核因子-Y三元转录因子复合物赋予盐分耐受性
Xing Li1, Changjiang Li1, Lei Shi1
1State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China.
Cell reports
|February 22, 2024
概括
雅斯蒙酸信号增强了植物对盐的抵抗力. 核因子-Y (NF-Y) 复合体激活了对盐度敏感的基因,但JASMONATE-ZIM DOMAIN蛋白8 (JAZ8) 抑制了它. 在高盐度下的JAZ8降解会释放NF-Y,提高植物的盐分耐受性.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 斯酸盐 (JA) 对植物生物应激反应至关重要.
- 人们已经认识到JA信号对抗盐的作用,但机制尚不清楚.
- 了解植物的盐分耐受性对于农业至关重要.
研究的目的:
- 为了阐明JA信号在植物盐抵抗中的调节机制.
- 为了确定参与JA介导盐反应途径的关键蛋白质.
- 描述NF-Y和JAZ8在盐度耐受性的相互作用.
主要方法:
- 酵母两混合测试检测蛋白质与蛋白质相互作用.
- 定量实时PCR (qRT-PCR) 用于分析基因表达.
- 在高盐度条件下分析植物表型.
主要成果:
- 核因子-Y (NF-Y) 子单元NF-YA1,NF-YB2和NF-YC9形成一个复合体,激活对盐度敏感的基因.
- 贾斯蒙酸-域蛋白8 (JAZ8) 直接与NF-Y复合体相互作用,抑制其活性.
- 通过冠状腺不敏感 (COI) 1 的JA感知导致JAZ8降解,激活NF-Y复合体并增强盐分耐受性.
结论:
- 在JA介导的盐耐受性中,JAZ8充当NF-Y复合物的抑制剂.
- JAZ8降解是激活像MYB75.5这样的盐度敏感基因的关键一步.
- 这项研究揭示了一种新的调节途径,增强了植物的盐分耐受性.
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
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
Regulation of Transpiration by Stomata
28.3K
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.
28.3K
Tonicity in Plants
30.7K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
30.7K
Transcription
147.0K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
147.0K
Responses to Heat and Cold Stress
13.5K
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.
13.5K


