Biotechnology Bulletin ›› 2018, Vol. 34 ›› Issue (11): 36-41.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0514

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Function of S-nitrosoglutathione Reductase Under Stresses in Plant

XIA Jin-chan   

  1. Basic Medical School,Henan University of Traditional Chinese Medicine,Zhengzhou 450046
  • Received:2018-06-04 Online:2018-11-26 Published:2018-11-28

Abstract: Nitric oxide(NO)as a signaling molecule is involved in diverse physiological processes such as germination,stomata closing,lateral root development and biotic and abiotic stress response. The predominant regulating way of NO action is S-nitrosylation,the reversible covalent attachment of NO to cysteine thiols. As a free radical,NO’s half-life is very short,which restricts their physiological function in cells;while the S-nitrosothiols(SNOs)from the interaction of NO with intracellular sulfhydryl-containing molecules are generally more stable in solution,and it participates in the transport,diffusion,and storage of NO,as well as the post-translational modifications of proteins. S-nitrosoglutathione(GSNO)from s-nitrosation with NO is the storage and transport form of NO,which can transfer its NO moiety to proteins and enable target protein to be in nitrosylation. As a type of conserved protein,S-nitrosoglutathione reductase(GSNOR)regulates the level of intracellular NO and nitroso mercaptan(SNOs)by reducing GSNO,thus which may protect the body from nitrosation stress and indirectly regulate the oxidative state cell. GSNO is a natural NO repository and GSNOR is the key gene that regulates the level of nitrosylation. This paper mainly summarizes the processes of plant growth and development,biological and abiotic stress involved in GSNOR. Exploring the mechanism of GSNOR in plant growth and stress response will help us to understand the physiological function of NO,aiming at providing a theoretical reference and thought for future GSNOR research.

Key words: plant, S-nitrosoglutathione, S-nitrosoglutathione reductase, nitric oxide