Effect of fumigation with chloropicrin on soil bacterial communities and genes encoding key enzymes involved in nitrogen cycling

Environmental Pollution
Jun LiAocheng Cao

Abstract

Chloropicrin (CP) is a potential alternative for methyl bromide as a soil fumigant given that the use of methyl bromide has become limited. However, little is known about how fumigation with CP affects the condition of the soil microbial community. In this study, 16S rRNA amplicon sequencing and quantitative PCR were combined to investigate the effect of CP on soil bacterial community. In total, 938,922 effective reads were obtained from 18 samples and clustered into 58,662 operational taxonomic units at a similarity cut-off of 97%. Both approaches showed that the primary structure of bacterial community in soil did not significantly change at the phylum level after fumigation, but CP had a significant impact on the abundance of the bacterial microbiome that was recovered and identified. Additionally, bacterial community diversity decreased significantly, and there was a shift in the predominant populations. Staphylococcus, Actinomadura, Acinetobacter and Streptomyces significantly decreased in number or disappeared, and Bacteroides, Lachnoclostridium, Pseudoalteromonas, Colwellia, Idiomarina and Cobetia became the new predominant populations. In addition, some species associated with biodegradation, such as Sphingomonas spp. a...Continue Reading

Citations

Nov 9, 2018·Frontiers in Microbiology·Wensheng FangAocheng Cao
Aug 13, 2021·Environmental Science and Pollution Research International·Ran ChenZhiquan Mao
Oct 20, 2018·Journal of Agricultural and Food Chemistry·Wensheng FangAocheng Cao
Jan 11, 2020·Journal of Agricultural and Food Chemistry·Jiahong ZhuYuan Li
Dec 18, 2018·Environmental Pollution·Bin HuangAocheng Cao

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