期刊
BIOMOLECULES
卷 9, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/biom9070285
关键词
abscisic acid; brassinosteroids; cytokinins; ethylene; jasmonates; oxidative stress; plant hormones; salicylic acid
资金
- National Key Research and Development Program of China [2018YFD1000600]
- Independent research topics of the State Key Laboratory of Subtropical Silviculture [ZY20180208, ZY20180308]
- Key Research and Development Program of Zhejiang Province [2018C02004]
- Key Project of Zhejiang Provincial Natural Science Foundation [LZ18C160001]
- Fruit Innovation Team Project of Zhejiang Province [2016C02052-12]
- National Undergraduate Innovation and Entrepreneurship Training Project [201610341010]
- Undergraduate Science and Technology Innovation Plan of Zhejiang Province [2017R412006]
- Undergraduate Research Training Program in Zhejiang A F University [102-2013200005, 102-2013200041, 102-2013200042, KX20180047, KX20180043, KX20180065]
Plants face a variety of abiotic stresses, which generate reactive oxygen species (ROS), and ultimately obstruct normal growth and development of plants. To prevent cellular damage caused by oxidative stress, plants accumulate certain compatible solutes known as osmolytes to safeguard the cellular machinery. The most common osmolytes that play crucial role in osmoregulation are proline, glycine-betaine, polyamines, and sugars. These compounds stabilize the osmotic differences between surroundings of cell and the cytosol. Besides, they also protect the plant cells from oxidative stress by inhibiting the production of harmful ROS like hydroxyl ions, superoxide ions, hydrogen peroxide, and other free radicals. The accumulation of osmolytes is further modulated by phytohormones like abscisic acid, brassinosteroids, cytokinins, ethylene, jasmonates, and salicylic acid. It is thus important to understand the mechanisms regulating the phytohormone-mediated accumulation of osmolytes in plants during abiotic stresses. In this review, we have discussed the underlying mechanisms of phytohormone-regulated osmolyte accumulation along with their various functions in plants under stress conditions.
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