Trichoderma viride F7 improves peanut performances while remediating cadmium-contaminated soil with microplastics  

作　　者：Xin SONG Jianpeng JIN Hongliang YIN Tingjuan WANG Haiying ZONG Fangli WANG Jun LIU Xiaoli HUANG Bin WANG Chao CHAI Zhi LI Dongsheng LIU Xuexia WANG Ningning SONG 

机构地区：[1]School of Resources and Environment,Qingdao Agricultural University,Qingdao 266109,China [2]Central Laboratory,Qingdao Agricultural University,Qingdao 266109,China [3]Institute of Soil Fertilizer and Agricultural Water Saving,Xinjiang Academy of Agricultural Sciences,Ürümqi 830091,China [4]Institute of Plant Nutrition and Resources,Beijing Agricultural Forestry Academy Sciences,Beijing 100097,China

出　　处：《Pedosphere》2024年第5期971-980,共10页土壤圈（英文版）

基　　金：supported by the Natural Science Foundation of Shandong Province,China(Nos.ZR2022MD050,ZR2022MD118,and ZR2022MD025);the Key Research and Development Program of Xinjiang,China(Nos.2016B02017-4 and 2018B01006-1);the Technical System of Ecological Agriculture of Modern Agricultural Technology System in Shandong Province,China(No.SDAIT-30-02);the Postgraduate Innovation Program of Qingdao Agricultural University,China(No.QNYCX22030)。

摘　　要：Microplastics(MPs)and cadmium(Cd)in soil have serious negative impacts on plant growth.As a bioremediator,Trichoderma viride may modulate the impacts of MPs and/or Cd on plant growth and heavy metal uptake.In this study,T.viride F7 was used to treat Cd-contaminated soil with and without the presence of polylactic acid MPs to investigate its effects on peanut growth,Cd uptake efficiency,and soil properties.Results showed that F7 increased soil pH,dissolved organic carbon,cation exchange capacity,microbial biomass nitrogen,and microbial biomass carbon,which resulted in increases of 2.10%-19.83%in peanut biomass and mitigated the negative effects of MPs and Cd on peanut growth.Trichoderma viride F7 reduced the soil bioavailable Cd and plant Cd concentrations by 16.68%-34.20%and 5.37%-25.84%,respectively.Regression path analysis showed that F7 could improve peanut performances by altering soil properties and reducing peanut Cd concentrations in MP-Cd-contaminated soil.Soil fungal community analysis indicated that the microbial community was altered via F7 inoculation,which antagonized Fusarium and promoted peanut growth.This study reveals the mechanisms of F7 in mitigating Cd contamination in the soil with the presence of MPs,which provides new ideas for managing MP-heavy metal-contaminated soil and improving soil health.

关 键 词：BIOREMEDIATION compound pollution emerging pollutant heavy metal polyethylene soil health 

分 类 号：X53[环境科学与工程—环境工程] S565.2[农业科学—作物学]