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Co-occurrence of genes for antibiotic resistance and arsenic biotransformation in paddy soils

Journal of Environmental Sciences 2023年第3期125卷 701-711页

作者： Huiling Cui Dong Zhu Longjun Ding yifeiwang Jianqiang Su Guilan Duan Yongguan Zhu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

Paddy soils are potential hotspots of combined contamination with arsenic(As) and antibiotics, which may induce co-selection of antibiotic resistance genes(ARGs) and As biotransformation genes (ABGs), resulting in dissemination of antimicrobial resistance and modification in As biogeochemical cycling. So far, little information is available for these coselection processes and specific patterns between ABGs and ARGs in paddy soils. Here, the16S rRNA amplicon sequencing and high-throughput quantitative PCR and network analysis were employed to investigate the dynamic response of ABGs and ARGs to As stress and manure application. The results showed that As stress increased the abundance of ARGs and mobile genetic elements (MGEs), resulting in dissemination risk of antimicrobial resistance. Manure amendment increased the abundance of ABGs, enhanced As mobilization and methylation in paddy soil, posing risk to food safety. The frequency of the co-occurrence between ABGs and ARGs, the host bacteria carrying both ARGs and ABGs were increased by As or manure treatment, and remarkably boosted in soils amended with both As and manure. Multidrug resistance genes were found to have the preference to be co-selected with ABGs, which was one of the dominant co-occurring ARGs in all treatments, and manure amendment increased the frequency of Macrolide-Lincosamide-Streptogramin B resistance(MLSB) to co-occur with ABGs. Bacillus and Clostridium of Firmicutes are the dominant host bacteria carrying both ABGs and ARGs in paddy soils. This study would extend our understanding on the co-selection between genes for antibiotics and metals, also unveil the hidden environmental effects of combined pollution.

关键词： Arsenic Arsenic biotransformation genes Antibiotic resistance genes Co-occurrence Host bacteria

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Expression of germ cell nuclear factor （GC-NF） in mouse epididymis, germ cells and sperm during postnatal period

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中国组织化学与细胞化学杂志 2004年第3期13卷 380-380页

作者： ChertXu ZongyaoZhou QiangsuGuo yifeiwang DepartmentofHistology＆Embryology ShanghaiSecondMedicalUniversity280SouthChongqingRoadShanghai200025P.R.China

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Characterization of germ cell and sperm expression of the germ cell nuclear factor （GCNF） in mouse

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中国组织化学与细胞化学杂志 2004年第3期13卷 335-335页

作者： ChenXu ZongyaoZhou QiangsuGuo YuanxinHu YonglianZhang yifeiwang DepartmentofHistology＆Embryology ShanghaiSecondMedicalUniversity280SouthChongqingRoadShanghai200025P.R.China StateKeyLaboratoryofMolecularBiology InstituteofBiochemistryandCellBiologyShanghaiInstitutesforBiologicalSciences320YueYangRoadShanghai200031P.R.China

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