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Dissolved Organic Matter from Earthworm Casts Restrained the Phytotoxicity of Soil Glyphosate to Citrus (Poncirus trifoliata (L.) Raf.) Plants

文献类型: 外文期刊

作者: Feng, Huan 1 ; Jiang, Lei 2 ; Wang, Bingjie 2 ; Pan, Bo 2 ; Lin, Yong 2 ;

作者机构: 1.Guizhou Univ, Ctr R&D Fine Chem, Natl Key Lab Green Pesticide, Key Lab Green Pesticide & Agr Bioengn,Minist Educ, Guiyang 550025, Peoples R China

2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Peoples R China

关键词: EWC-DOM; glyphosate; phytotoxicity; citrus (Poncirus trifoliata (L; ) Raf; )

期刊名称:AGRICULTURE-BASEL ( 影响因子:3.6; 五年影响因子:3.6 )

ISSN:

年卷期: 2023 年 13 卷 6 期

页码:

收录情况: SCI

摘要: A large amount of glyphosate enters the soil at a high frequency, forming "pseudo-persistent" pollutants that, in turn, threaten soil ecological function and crop growth. Earthworm casts (EWCs) are a sound organic alternative to chemical fertilizers to promote crop growth. Dissolved organic matter from EWCs (EWC-DOM) is supposed to be a more mobile and bioavailable fraction. However, the effect of EWC-DOM on the phytotoxicity of glyphosate remains largely unknown. This study examines glyphosate-induced oxidative stress and its impact on antioxidant and detoxification enzymes in citrus plants grown in soils with and/or without EWC-DOM. The results suggest that EWC-DOM could reduce the membrane lipid peroxidation level, thus slowing down the aging of plants in order to maintain stronger resilience, with more active antioxidant enzymes (including SOD, POD, and CAT) and detoxification enzymes (including GST, laccase, CPR, and UGTs) that could effectively remove reactive oxygen species (ROS) caused by glyphosate stress, thereby alleviating the damage of ROS accumulation on plant tissues. Our data indicate that incorporating EWC-DOM should be a sound way to protect citrus plants from the phytotoxicity caused by using glyphosate for orchard weeding. This has major implications for the sustainable and healthy development of citrus production.

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