温度升高对生树的影响 结节发育:II-植物激素反应
Anna B Kitaeva1, Tatiana A Serova1, Pyotr G Kusakin1
1Laboratory of Molecular and Cell Biology, All-Russia Research Institute for Agricultural Microbiology, 196608 Saint Petersburg, Russia.
International journal of molecular sciences
|December 9, 2023
概括
高温会触发豆类结节的衰老,其中酸 (ABA) 和乙烯作为正调节剂,吉伯雷林作为负调节剂,影响固化. 这项研究揭示了植物激素在热应激反应中的关键作用.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 农业学是一种农业学.
背景情况:
- 高温限制了豆类的生产力,因为它诱导了结节的衰老.
- 之前的研究发现,在热应力 (28°C) 下,在豆结节中发现了尖端衰老.
研究的目的:
- 为了研究酸 (ABA),乙烯和吉伯雷林在豆的热诱导的尖端衰老中的作用.
- 要了解高温下结节衰老的植物激素调节.
主要方法:
- 免疫定位用于检测ABA和1-aminocyclopropane-1-carboxylic acid (ACC) 的水平.
- 基伯酸 (GA3) 水平的量化.
- 分析与衰老,热冲击和防御反应相关的基因表达.
主要成果:
- 热应激在一天内增加了固区的ABA和ACC水平.
- 在热应激下,吉伯酸 (GA3) 水平下降.
- 外源性GA3延迟了结节的降解,并减少了与衰老相关的基因的表达.
结论:
- 植物激素调节热应激豆中的顶峰衰老,类似于自然衰老.
- ABA和乙烯是热引起的结节衰老的积极调节者.
- 吉伯雷林作为负调节剂,可能减轻热应激对结节的影响.
相关概念视频
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
Increased Body Temperature
676
A body temperature above 38°C (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
676
Plant 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
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
Factors Affecting Body Temperature
4.2K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.2K
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


