LEA Protein and Its Application in Improvement of Stress Tolerance in Plants

doi:10.13560/j.cnki.biotech.bull.1985.2015.04.001

Abstract

Abstract: Adverse conditions, including drought, salinity and extreme temperatures, often restrict the growth and development of plants. In plants, there exist a group of highly hydrophilic proteins, known as LEA(late embryogenesis abundant)proteins, which generally accumulate at the last stage of embryogenesis under natural conditions. It has a strong resistance to various abiotic stresses, and can respond to drought, cold, high salt and ABA signals. LEA proteins can maintain normal metabolic reactions of plants by maintaining cellular osmotic pressure, protecting the cell membrane structure and functioning as a molecular chaperone to protect other proteins. In this paper, the classification, structure, stress tolerance mechanisms of LEA protein and its application in improvement of stress tolerance in plant were reviewed.

Key words: LEA protein, abiotic stresses, stress tolerance

Wang Yanrong, Zhang Zhiguo, Wu Jinxia. LEA Protein and Its Application in Improvement of Stress Tolerance in Plants[J]. Biotechnology Bulletin, 2015, 31(3): 1-9.

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