植物抗氧化动态平衡研究进展

植物在生长发育的过程中会产生代谢副产物活性氧,其含量在植物生长过程中起双重作用。适量的活性氧可提高植物对逆境胁迫的耐受性,但是过量的活性氧会诱发氧化猝发反应,严重影响植物的生长发育。因此,提高植物的抗氧化能力对于提高植物的抗逆能力来说显得尤为重要,该方面的研究也成为近年来逆境生物学的一大热点。植物体为了应对逆境环境造成的活性氧动态失衡,进化出了含酶和非酶组分的抗氧化系统。本文主要介绍了参与高等植物活性氧代谢的相关物质,对近年来国内外报道的代谢途径进行了综述,为提高植物的抗逆能力提供参考依据。

Advances in antioxidative stress metabolism in plants

In the process of growth and development, plants produce metabolic byproducts of reactive oxygen species, which play a dual role in plant growth. Appropriate amount of active oxygen species can increase the tolerance of plants to stress. However, excessive reactive oxygen species can induce oxidative burst reactions, which seriously affect the growth and development of plants. Therefore, improving the antioxidant capacity of plants is particularly important for improving the ability to resist stress. This research has also become a research hot spot in adversity biology in recent years. The plant evolved an antioxidant system containing enzymes and non-enzyme components in response to the dynamic imbalance of reactive oxygen species caused by the adverse environment. This paper mainly introduces the related substances involved in the metabolism of reactive active oxygen species in plants. The metabolic pathways reported in recent years are reviewed, which provides a reference for improving the resistance of plants.