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

Xin SONG ¹Jianpeng JIN ¹Hongliang YIN ¹Tingjuan WANG ¹Haiying ZONG ¹Fangli WANG ¹Jun LIU ¹Xiaoli HUANG ²Bin WANG ³Chao CHAI ¹Zhi LI ¹Dongsheng LIU ⁴Xuexia WANG ⁴Ningning SONG¹

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作者信息

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)
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Abstract

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.

Key words

bioremediation/compound pollution/emerging pollutant/heavy metal/polyethylene/soil health

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基金项目

Natural Science Foundation of Shandong Province,China(ZR2022MD050)

Natural Science Foundation of Shandong Province,China(ZR2022MD118)

Natural Science Foundation of Shandong Province,China(ZR2022MD025)

Key Research and Development Program of Xinjiang,China(2016B02017-4)

Key Research and Development Program of Xinjiang,China(2018B01006-1)

Technical System of Ecological Agriculture of Modern Agricultural Technology System in Shandong Province,China(SDAIT-30-02)

Postgraduate Innovation Program of Qingdao Agricultural University,China(QNYCX22030)

出版年

2024

土壤圈(英文版)

中国土壤学会,中科院南京土壤研究所和土壤与农业可持续发展国家重点实验室

土壤圈(英文版)

CSTPCD

影响因子：0.477

ISSN：1002-0160

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