微塑料胁迫对作物叶片抗氧化酶活性影响的Meta分析OA

The primary objective was to explore the effects of microplastics(or nanoplastics,MPs/NPs)type,exposure concentration,and crop species on the activities of catalase(CAT),peroxidase(POD),and superoxide dismutase(SOD).A meta-analysis approach(subgroup analysis)was employed in this study.The results demonstrated that adding MPs/NPs significantly increased the activities of CAT,POD and SOD.However,the effects varied depending on MPs/NPs exposure concentration and type,as well as crop species.Under the stress of MPs/NPs,the activities of these three antioxidant enzymes,CAT,POD and SOD in the leaves of some crop species exhibited consistent response,e.g.cotton,rice,lettuce and wheat.The conclusions of this study provide important guidance for future investigations into the physiological mechanisms underlying crop responses to MPs/NPs stress and the development of methods for alleviating MPs/NPs stress in specific crops.