甲硫氨酸亚砜还原酶及其调控果蔬逆境胁迫的研究进展

Research Progress on Methionine Sulfoxide Reductase and Its Regulation on the Adversity Stress of Fruit and Vegetable

甲硫氨酸亚砜还原酶(methionine sulfoxide reductase,Msr)是一类可以清除自由基、修复已氧化蛋白的抗氧化酶类,其可以将甲硫氨酸亚砜还原为有活性的甲硫氨酸,在调控果蔬成熟衰老及逆境胁迫抗性中发挥着重要作用。本文总结了Msr的分类,并针对果蔬作物中Msr的作用底物、基因家族以及Msr在调控果蔬代谢及逆境胁迫响应中的研究进展进行了综述。本文为进一步深入研究果蔬作物中Msr的种类及功能,以及通过基因工程手段改善果蔬的品质、提高抗逆性提供理论参考。

Methionine sulfoxide reductase(Msr)is a kind of antioxidant enzyme that can scavenge free radicals and repair oxidized proteins by reducing methionine sulfoxide to active methionine.Studies have shown that Msr play an important role in regulating ripening,senescence,and stress resistance of fruit and vegetable.In this paper,the classification of Msr is summarized.In addition,the research progresses on the substrates of Msr,gene families encoding Msr,and its role in regulating fruit and vegetable metabolism and stress response are reviewed.This paper would provide theoretical references for further studying the types and functions of Msr in fruit and vegetable crops,as well as improving the quality and stress resistance of fruit and vegetables by genetic engineering.