Effects of Pseudomonas chenduensis and biochar on cadmium availability and microbial community in the paddy soil

The Science of the Total Environment
Lingjuan LiYong Tao

Abstract

The cadmium contamination in the paddy soil results in serious environmental pollutions. In situ soil remediation based on the applications of additives such as functional microorganisms and biochars has gradually attained more attentions. However, how these exogenous additives affect the local microbial communities is less discussed. In this study, a heavy metal resistant bacterium (Pseudomonas chenduensis, strain MBR) and biochar derived from oil palm fibers were separately added into the simulated Cd-contaminated paddy soil to investigate the roles of these additives in the soil remediation and regulating local microbial community. The results showed that compared with control, the addition of the strain MBR and biochar reduced the exchangeable/acid soluble cadmium fraction by 30% and 18%, respectively. Moreover, higher microbial diversity, more deterministic effects and less variation in microbial community were observed in the treatments supplemented with the strain MBR and biochar, and the increase of the deterministic effects on microbial interactions was demonstrated by network analysis further. Additionally, the abundance of the strain MBR in the paddy soil decreased as time passed, which maximally decreased the distur...Continue Reading

Citations

Sep 30, 2020·Applied Microbiology and Biotechnology·Lingjuan LiYong Tao
Feb 12, 2019·Environment International·Prabhat Kumar RaiKi-Hyun Kim
Dec 2, 2020·The Science of the Total Environment·Babar HussainMuhammad Farooq
Aug 28, 2020·Ecotoxicology and Environmental Safety·Panxue GuXinyi Lou
Aug 28, 2020·Ecotoxicology and Environmental Safety·Jing-Fang CaiFei-Hai Yu
Nov 8, 2021·The Science of the Total Environment·Yu WangShaoting Du

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