首页|Impact of residual antibiotics on microbial decomposition of livestock manures in Eutric Regosol:Implications for sustainable nutrient recycling and soil carbon sequestration

Impact of residual antibiotics on microbial decomposition of livestock manures in Eutric Regosol:Implications for sustainable nutrient recycling and soil carbon sequestration

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Impact of residual antibiotics on microbial decomposition of livestock manures in Eutric Regosol:Implications for sustainable nutrient recycling and soil carbon sequestration
The land application of livestock manure has been widely acknowledged as a beneficial ap-proach for nutrient recycling and environmental protection.However,the impact of resid-ual antibiotics,a common contaminant of manure,on the degradation of organic com-pounds and nutrient release in Eutric Regosol is not well understood.Here,we studied,how oxytetracycline(OTC)and ciprofloxacin(CIP)affect the decomposition,microbial com-munity structure,extracellular enzyme activities and nutrient release from cattle and pig manure using litterbag incubation experiments.Results showed that OTC and CIP greatly inhibited livestock manure decomposition,causing a decreased rate of carbon(28％-87％),nitrogen(15％-44％)and phosphorus(26％-43％)release.The relative abundance of gram-negative(G-)bacteria was reduced by 4.0％-13％while fungi increased by 7.0％-71％dur-ing a 28-day incubation period.Co-occurrence network analysis showed that antibiotic ex-posure disrupted microbial interactions,particularly among G-bacteria,G+bacteria,and actinomycetes.These changes in microbial community structure and function resulted in decreased activity of urease,β-1,4-N-acetyl-glucosaminidase,alkaline protease,chitinase,and catalase,causing reduced decomposition and nutrient release in cattle and pig ma-nures.These findings advance our understanding of decomposition and nutrient recycling from manure-contaminated antibiotics,which will help facilitate sustainable agricultural production and soil carbon sequestration.

Residual antibioticsLivestock manure decompositionMicrobial communityCo-occurrence networkEnzyme activities

Linfa Fang、Prakash Lakshmanan、Xiaoxuan Su、Yujia Shi、Zheng Chen、Yu Zhang、Wei Sun、Junxi Wu、Ran Xiao、Xinping Chen

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Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin,College of Resources and Environment,Southwest University,Chongqing 400715,China

Key Laboratory of Sugarcane Biotechnology and Genetic Improvement(Guangxi),Ministry of Agriculture and Rural Affairs

Guangxi Key Laboratory of Sugarcane Genetic Improvement,Sugarcane Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China

Queensland Alliance for Agriculture and Food Innovation,University of Queens

Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and National Resources Research,Chinese Academy of Sciences,Beijing 100101,China

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Residual antibiotics Livestock manure decomposition Microbial community Co-occurrence network Enzyme activities

2025

10.1016/j.jes.2023.10.021

环境科学学报(英文版)
中科院生态环境研究中心

环境科学学报(英文版)

影响因子：0.862
ISSN：1001-0742
年,卷(期)：2025.147(1)