内源性黑激素通过影响辅酶信号传递来参与植物盐反应
Rongqing Miao1, Zhiqi Li1, Yue Yuan1
1Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China.
Plant cell reports
|January 10, 2024
概括
内源性黑激素对于植物的盐分耐受性至关重要. 黑色素生物合成突变体表现出盐敏感性,这与辅酶信号通路有关,突出显示了黑色素在应激反应中的作用.
科学领域:
- 植物生物学 植物生物学
- 分子信号传递是分子信号传递.
- 压力生理学 压力生理学
背景情况:
- 黑色素是一种参与生长,发育和环境压力反应的信号分子.
- 内源性黑激素在植物盐分耐受性中的特定作用在很大程度上仍未确定.
研究的目的:
- 调查内源性黑激素在植物盐反应中的参与.
- 为了阐明黑激素调解Arabidopsis盐分耐受性的机制.
主要方法:
- 使用了一种双重突变 (snat1snat2),缺乏黑激素生物合成基因 (SNAT1和SNAT2).
- 评估植物对盐应激的反应,包括生长,离子平衡和反应性氧物种 (ROS) 积累.
- 分析了转录形状,以确定受影响的基因和途径.
- 评估了外源性auxin应用对突变表型的影响.
主要成果:
- 这种Snat1snat2突变体表现出增加的盐敏感性,其特点是生长障碍,离子失衡和盐应激下ROS积累.
- 转录组分析揭示了与突变物中辅酶合成和信号传递相关的盐反应基因的显著变化.
- 外源性auxin的应用部分地挽救了snat1snat2突变的盐敏感生长表型.
结论:
- 内生黑激素在植物的盐分耐受性中起着至关重要的作用.
- 黑色素通过影响辅酶信号通路,至少部分地调解盐反应.
- 这些发现表明,黑激素对于在盐应激条件下维持植物平衡至关重要.
相关概念视频
02:02Responses 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
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
02:00Photoreceptors and Plant Responses to Light
20.4K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
20.4K
02:45Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
01:56Plant Hormones
24.0K
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
24.0K
01:20Tonicity 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