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Meta-analysis of chitosan-mediated effects on plant defense against oxidative stress

文献类型： 外文期刊

作者： Ji, Haihua 1 ; Wang, Jinghong 1 ; Chen, Feiran 1 ; Fan, Ningke 1 ; Wang, Xie 2 ; Xiao, Zhenggao 1 ; Wang, Zhenyu 1 ;

作者机构： 1.Jiangnan Univ, Inst Environm Proc & Pollut Control, Sch Environm & Civil Engn, Jiangsu Engn Lab Biomass Energy & Carbon Reduct Te, Wuxi 214122, Peoples R China

2.Sichuan Acad Agr Sci, Inst Agr Resources & Environm, Chengdu 610066, Peoples R China

关键词： Chitosan; Nanoparticles; Plant oxidative stress; Plant defense system; Antioxidant enzymes; Meta-analysis

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）

ISSN： 0048-9697

年卷期： 2022 年 851 卷

页码：

收录情况： SCI

摘要： Chitosan, as a natural non-toxic biomaterial, has been demonstrated to enhance plant defense against oxidative stress. However, the general pattern and mechanism of how chitosan application modifies the amelioration of oxidative stress in plants have not been elucidated yet. Herein, we performed a meta-analysis of 58 published articles up to January 2022 to fill this knowledge gap, and found that chitosan application significantly increased the antioxidant enzyme activity (by 40.6 %), antioxidant metabolites content (by 24.6 %), defense enzyme activity (by 77.9 %), defense -related genes expression (by 103.2 %), phytohormones (by 26.9 %), and osmotic regulators (by 23.2 %) under stress conditions, which in turn notably reduced oxidative stress (by 32.2 %), and increased plant biomass (by 28.1 %) and yield (by 15.7 %). Moreover, chitosan-mediated effects on the amelioration of oxidative stress depended on the properties and application methods of chitosan. Our findings provide a comprehensive understanding of the mechanism of chitosan-alleviated oxidative stress, which would promote the application of chitosan in plant protec-tion in agriculture.

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