文献类型： 外文期刊
作者： Raza, A. 1 ; Charagh, S. 2 ; Abbas, S. 3 ; Hassan, M. U. 4 ; Saeed, F. 5 ; Haider, S. 6 ; Sharif, R. 7 ; Anand, A. 8 ; Corpas, F. J. 9 ; Jin, W. 10 ; Varshney, R. K. 11 ;
作者机构： 1.Fujian Agr & Forestry Univ FAFU, Coll Agr, Fuzhou 350002, Peoples R China
2.Chinese Acad Agr Sci CAAS, China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou, Peoples R China
3.Govt Coll Univ, Fac Life Sci, Dept Bot, Faisalabad, Pakistan
4.Jiangxi Agr Univ, Res Ctr Ecol Sci, Nanchang, Peoples R China
5.Nigde Omer Halisdemir Univ, Fac Agr Sci & Technol, Dept Agr Genet Engn, Nigde, Turkiye
6.Quaid i Azam Univ, Dept Plant Sci, Plant Biochem & Mol Biol Lab, Islamabad, Pakistan
7.Yangzhou Univ, Sch Hort & Landscape, Dept Hort, Yangzhou, Peoples R China
8.Indian Agr Res Inst, Div Plant Physiol, ICAR, New Delhi, India
9.Spanish Natl Res Council, Dept Stress Dev & Signaling Plants, Grp Antioxidants Free Rad & Nitr Oxide Biotechnol, Estac Expt Zaidin,CSIC, Granada, Spain
10.Beijing Acad Agr & Forestry Sci, Inst Forestry & Pomol, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 350002, Peoples R China
11.Murdoch Univ, State Agr Biotechnol Ctr, Ctr Crop & Food Innovat, Murdoch, WA 6150, Australia
关键词： Amino acid; climate change; climate-resilient crops; cold stress; genetic engineering; heat stress; osmoprotectants
期刊名称：PLANT BIOLOGY （ 影响因子：3.9； 五年影响因子：3.6 ）
ISSN： 1435-8603
年卷期： 2023 年 25 卷 3 期
页码：
收录情况： SCI
摘要： Climate change and abiotic stress factors are key players in crop losses worldwide. Among which, extreme temperatures (heat and cold) disturb plant growth and development, reduce productivity and, in severe cases, lead to plant death. Plants have developed numerous strategies to mitigate the detrimental impact of temperature stress. Exposure to stress leads to the accumulation of various metabolites, e.g. sugars, sugar alcohols, organic acids and amino acids. Plants accumulate the amino acid 'proline' in response to several abiotic stresses, including temperature stress. Proline abundance may result from de novo synthesis, hydrolysis of proteins, reduced utilization or degradation. Proline also leads to stress tolerance by maintaining the osmotic balance (still controversial), cell turgidity and indirectly modulating metabolism of reactive oxygen species. Furthermore, the crosstalk of proline with other osmoprotectants and signalling molecules, e.g. glycine betaine, abscisic acid, nitric oxide, hydrogen sulfide, soluble sugars, helps to strengthen protective mechanisms in stressful environments. Development of less temperature-responsive cultivars can be achieved by manipulating the biosynthesis of proline through genetic engineering. This review presents an overview of plant responses to extreme temperatures and an outline of proline metabolism under such temperatures. The exogenous application of proline as a protective molecule under extreme temperatures is also presented. Proline crosstalk and interaction with other molecules is also discussed. Finally, the potential of genetic engineering of proline-related genes is explained to develop 'temperature-smart' plants. In short, exogenous application of proline and genetic engineering of proline genes promise ways forward for developing 'temperature-smart' future crop plants.
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