Mechanism of arbuscular mycorrhizal fungi improve the oxidative stress to the host plants under salt stress: A review

doi:10.13287/j.1001-9332.202010.040

Abstract

Abstract: Soil salinization induced by the dual effects of natural environment and human activities is a serious ecological problem globally. Salinization caused osmotic imbalance, ion stress, oxidative damage, and other hazards to plants, leading to retard, reduce biomass and even total crop failure. Arbuscular mycorrhizal fungi (AMF) is a group of beneficial microorganism with wide distribution. AMF can form symbiotic relationship with most plant roots, with ecological significance in various stressed ecosystems. Because of the highly effective antioxidative system in symbionts, AMF could improve plant anti-oxidative response under salt stress and enhance their tolerance to salt stress. Here, we reviewed the research progress of arbuscular mycorrhizal symbiosis in improing plant antioxidative mechanism, including oxidative damage, osmotic regulation, antio-xidant mechanism and bioactive molecules. Finally, research prospects were proposed to provide theoritical support for improving plant salt tolerance by mycorrhizal biotechnology.

Key words: salt stress, arbuscular mycorrhizal fungi, oxidative stress, osmotic regulation, antioxidant

SUN Si-miao, CHANG Wei, SONG Fu-qiang. Mechanism of arbuscular mycorrhizal fungi improve the oxidative stress to the host plants under salt stress: A review[J]. Chinese Journal of Applied Ecology, 2020, 31(10): 3589-3596.

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