LDPE microplastics significantly alter the temporal turnover of soil microbial communities

微塑料 微观世界 修正案 微生物种群生物学 生态演替 生态系统 环境科学 群落结构 土壤水分 生态学 土壤微生物学 生物 环境化学 化学 细菌 法学 遗传学 政治学
作者
Jie Wang,Muke Huang,Qian Wang,Yuanze Sun,Yanran Zhao,Yi Huang
出处
期刊:Science of The Total Environment [Elsevier]
卷期号:726: 138682-138682 被引量:167
标识
DOI:10.1016/j.scitotenv.2020.138682
摘要

Although the ubiquitous presence of microplastics in various environments is increasingly well studied, knowledge of the effects of microplastics on ambient microbial communities is still insufficient. To estimate the response of soil bacterial community succession and temporal turnover to microplastic amendment, a soil microcosm experiment was carried out with polyethylene microplastics. The soil samples under control and microplastic amendment conditions were collected for sequencing analysis using Illumina MiSeq technology. Microplastic amendment was found to significantly alter soil bacterial community structure, and the community differences were increased linearly with the incubation time. Compared with the turnover rate of bacterial community in the control samples (0.0103, p < .05, based on Bray-Curtis similarity), the succession rate was significantly (p < .001) higher in the soil with microplastic amendment (0.0309, p < .001). In addition, the effects of microplastic amendment on the time-decay relationships (TDRs) on taxonomic divisions revealed considerable variations of TDRs values, indicating the effects were lineage dependent. Our results propose that the presence of microbial in soil ecosystem may lead to a faster succession rate of soil bacterial community, which provides new insights into the evolutionary consequences of microplastics in terrestrial environment.
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