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- W4282828989 endingPage "113576" @default.
- W4282828989 startingPage "113576" @default.
- W4282828989 abstract "Heavy metal pollution affected the stability and function of soil ecosystem. The impact of heavy metals on soil microbial community and the interaction of microbial community has been widely studied, but little was known about the response of community assembly to the heavy metal pollution. In this study, we collected 30 soil samples from non (CON), moderately (CL) and severely (CH) contaminated fields. The prokaryotic community was studied using high-throughput Illumina sequencing of 16s rRNA gene amplicons, and community assembly were quantified using phylogenetic-bin-based null approach (iCAMP). Results showed that diversity and composition of both bacterial and archaeal community changed significantly in response to heavy metal pollution. The microbial community assembly tended to be more deterministic with the increase of heavy metal concentration. Among the assembly processes, the relative importance of homogeneous selection (deterministic process) increased significantly (increased by 16.2%), and the relative importance of drift and dispersal limitation (stochastic process) decreased significantly (decreased by 11.4% and 5.4%, respectively). The determinacy of bacterial and archaeal community assembly also increased with heavy metal stress, but the assembly models were different. The deterministic proportion of microorganisms tolerant to heavy metals, such as Thiobacillus, Euryarchaeota and Crenarchaeota (clustered in bin 32, bin59 and bin60, respectively) increased, while the stochastic proportion of microorganisms sensitive to heavy metals, such as Koribacteraceae (clustered in bin23) increased. Therefore, the heavy metal stress made the prokaryotic community be deterministic, however, the effects on the assembly process of different microbial groups differed obviously." @default.
- W4282828989 created "2022-06-15" @default.
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- W4282828989 date "2022-10-01" @default.
- W4282828989 modified "2023-10-18" @default.
- W4282828989 title "Soil microbial community assembly model in response to heavy metal pollution" @default.
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- W4282828989 doi "https://doi.org/10.1016/j.envres.2022.113576" @default.
- W4282828989 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35710022" @default.
- W4282828989 hasPublicationYear "2022" @default.
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