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Role of brassinosteroids in mitigating abiotic stresses in plants
Biologia ( IF 1.5 ) Pub Date : 2020-10-02 , DOI: 10.2478/s11756-020-00587-8
Sneha Bhandari , Tapan K. Nailwal

Plants require extrinsic factors like air, water, light, nutrition, etc. for the regulation of their growth and development. Similarly, phytohormones are equally important for plants as intrinsic factors. Phytohormones are active molecules vital for various aspects in growth and development starting from embryogenesis, plant-pathogen defense and organ size regulation to reproductive development. These hormones also play an active role in mediating defense response against biotic and abiotic stresses in plants. According to estimates, a substantial loss in agricultural yields leading to concerns on food security worldwide has been reported due to abiotic stresses like salinity, extreme temperatures, drought, etc. To cope up with harsh stress conditions, plants develop certain altered growth patterns and physiological processes. Among various groups of phytohormones produced by plants, those which are based on isoprenoid origin are quite important in safeguarding plants against environmental stress. Brassinosteroids are one of the novel groups of plant hormones of isoprenoid origin. Due to its remarkable growth supporting property, these are regarded as phytohormones with pleiotropic effects. They dominate miscellaneous physiological activities such as growth, development, rhizogenesis, seed germination, senescence and most importantly abiotic stress tolerance in plants. In general, when a plant perceives a signal produced by stress, then it triggers a cascade mechanism of signal transduction with plant growth regulators, acting as alphatransducers.



中文翻译:

油菜素类固醇在缓解植物非生物胁迫中的作用

植物需要诸如空气,水,光,营养等外部因素来调节其生长发育。同样,植物激素作为内在因素同样重要。植物激素是从胚胎发生,植物病原体防御和器官大小调节到生殖发育开始对生长和发育各个方面至关重要的活性分子。这些激素在介导植物对生物和非生物胁迫的防御反应中也起着积极作用。据估计,由于非生物胁迫(如盐度,极端温度,干旱等),导致全球农业产量大幅下降,引起了人们对粮食安全的担忧。为应对严峻的胁迫条件,植物发展了某些改变的生长方式和生理流程。在植物产生的各种植物激素中,基于类异戊二烯来源的植物激素对于保护植物免受环境胁迫非常重要。油菜素类固醇是类异戊二烯来源的新型植物激素之一。由于其显着的生长支持特性,它们被认为是具有多效作用的植物激素。它们支配着各种生理活动,例如植物的生长,发育,发根,种子发芽,衰老以及最重要的非生物胁迫耐受性。一般而言,当植物感知到压力产生的信号时,它会触发植物生长调节剂(作为α换能器)的信号转导级联机制。基于类异戊二烯来源的那些对于保护植物免受环境胁迫非常重要。油菜素类固醇是类异戊二烯来源的新型植物激素之一。由于其显着的生长支持特性,它们被认为是具有多效作用的植物激素。它们支配着各种生理活动,例如植物的生长,发育,发根,种子发芽,衰老以及最重要的非生物胁迫耐受性。一般而言,当植物感知到压力产生的信号时,它会触发植物生长调节剂(作为α换能器)的信号转导级联机制。基于类异戊二烯来源的那些对于保护植物免受环境胁迫非常重要。油菜素类固醇是类异戊二烯来源的新型植物激素之一。由于其显着的生长支持特性,它们被认为是具有多效作用的植物激素。它们支配着各种生理活动,例如植物的生长,发育,发根,种子发芽,衰老以及最重要的非生物胁迫耐受性。一般而言,当植物感知到压力产生的信号时,它会触发植物生长调节剂(作为α换能器)的信号转导级联机制。这些被认为是具有多效作用的植物激素。它们支配着各种生理活动,例如植物的生长,发育,发根,种子发芽,衰老以及最重要的非生物胁迫耐受性。一般而言,当植物感知到压力产生的信号时,它会触发植物生长调节剂(作为α换能器)的信号转导级联机制。这些被认为是具有多效作用的植物激素。它们支配着各种生理活动,例如植物的生长,发育,发根,种子发芽,衰老以及最重要的非生物胁迫耐受性。一般而言,当植物感知到压力产生的信号时,它会触发植物生长调节剂(作为α换能器)的信号转导级联机制。

更新日期:2020-10-02
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