个人信息Personal Information
副教授
博士生导师
硕士生导师
任职 : 环境生态与工程研究生导师纵向党支部书记
性别:男
毕业院校:中科院南京土壤所
学位:博士
所在单位:环境学院
学科:环境科学
办公地点:环境楼B409
联系方式:办公电话:84707189 手机:13610848936
电子邮箱:xlqiao@dlut.edu.cn
Bacterial community variations in paddy soils induced by application of veterinary antibiotics in plant-soil systems
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论文类型:期刊论文
发表时间:2019-01-15
发表刊物:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
收录刊物:SCIE、PubMed、Scopus
卷号:167
页面范围:44-53
ISSN号:0147-6513
关键字:Veterinary antibiotics; Bacterial community; Paddy soils; Metagenomic analysis
摘要:Soil bacterial communities have complex regulatory networks, which are mainly associated with soil fertility and ecological functions, and are likely to be disturbed due to antibiotics applications. The impact of antibiotics, particularly in mixtures form, on bacterial communities in different paddy soils is poorly understood. Using pyrosequencing techniques of 16 S rRNA genes, this study investigated the synergistic effects of veterinary antibiotics (sulfadiazine, sulfamethoxazole, trimethoprim, florfenicol, and clarithromycin) on bacterial communities in a soil-bacteria-plant system. Rice was grown under controlled greenhouse conditions where unplanted and planted treatments were doped with 200 mu g kg(-1) of combined antibiotics over a period of 3 months. Bacterial richness remained unaltered, while a significant decline was observed in bacterial diversity due to antibiotics in the four paddy soils. Bacteroidetes and Acidobacteria were increased, while Actinobacteria and Firmicutes decreased under antibiotics exposure. Despite antibiotics perturbation, compositional variations were mainly attributed to the different paddy soils which harbor distinct bacterial communities. Haliangium and Gaiella were among the sensitive genera that were negatively correlated to antibiotics perturbation. Additionally, electrical conductivity, total organic carbon, and total nitrogen of soil solution were the key physiochemical indices which significantly influenced the structure of bacterial communities in the paddy soils. These findings expanded our knowledge of effects from synergistic antibiotics application and variations in bacterial communities among different paddy soils.