Elevated Atmospheric CO_(2)Reduced Antibiotics Accumulation in Rice Grains and Soil ARGs Abundance in Multiple Antibiotics-contaminated Paddy Fields
作者机构：State Key Laboratory of Pollution Control and Resource ReuseSchool of EnvironmentNanjing UniversityNanjing210023China Joint International Research Centre for Critical Zone Science-University of Leeds and Nanjing UniversityNanjing UniversityNanjing210023China School of EnvironmentNanjing Normal UniversityNanjing210036China College of Environmental Science and EngineeringYangzhou UniversityYangzhou225127China
出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)
年 卷 期：2023年第39卷第3期
页 面：455-464页
核心收录：
基 金：supported by the National Natural Science Foundation of China(Nos.21876083,42177003,42107004) the Science and Technology Innovation Program of Jiangsu Province,China(No.BK20220036)
主 题：Antibiotics Antibiotic resistance gene(ARG) Bacterial community Elevated CO_(2) Rice
摘 要：Antibiotic resistance genes(ARGs)as new pollutants have become a global environmental pollution problem in recent *** atmospheric CO_(2) is one of the major factors affecting global climate ***,the impacts of elevated CO_(2) on soil ARGs in multiple antibiotics-contaminated paddy soils are largely *** this study,six antibiotics including sulfadiazine(SDZ),sulfamethoxazole(SMZ),tetracycline(TC),oxytetracycline(OTC),enrofloxacin(ENR),and ciprofloxacin(CIP)were selected to investigate their combined effects on rice biomass,antibiotics accumulation,soil bacterial community and ARGs under elevated CO_(2) *** showed that elevated CO_(2) significantly reduced the accumulation of SMZ,OTC,ENR,and CIP in rice grains by 18.98%,20.07%,41.73%,and 44.25%,*** CO_(2) could affect soil microbialβ-diversity,and tend to reduce the microbial functions of human diseases,organismal systems,and genetic information *** addition,elevated CO_(2) significantly decreased the abundance of sulfonamide ARGs,tetracycline ARGs,and quinolone ARGs by 19.59%,18.58%,and 28.96%,respectively,while increased that of multidrug ARGs by 11.54%.Overall,this study emphasized that elevated CO_(2) may mitigate the threat of antibiotics contamination to rice food security but aggravate the environmental risk of multidrug ARGs in soil,contributing to a better understanding of the consequences of elevated CO_(2) levels on food security and soil ecological health in multiple antibiotics-contaminated paddy fields.
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