Adaptation of Rhizosphere Microbial Communities to Continuous Exposure to Multiple Residual Antibiotics in Vegetable Farms

Jincai Qiu, Yongshan Chen (), Ying Feng, Xiaofeng Li, Jinghua Xu and Jinping Jiang
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Jincai Qiu: School of Advanced Manufacturing, Fuzhou University, Quanzhou 362000, China
Yongshan Chen: School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China
Ying Feng: School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China
Xiaofeng Li: School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China
Jinghua Xu: School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China
Jinping Jiang: Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, China

IJERPH, 2023, vol. 20, issue 4, 1-15

Abstract: The constant application of manure-based fertilizers in vegetable farms leads to antibiotic residue accumulation in soils, which has become a major stressor affecting agroecosystem stability. The present study investigated the adaptation profiles of rhizosphere microbial communities in different vegetable farms to multiple residual antibiotics. Multiple antibiotics, including trimethoprim, sulfonamides, quinolones, tetracyclines, macrolides, lincomycins, and chloramphenicols, were detected in the vegetable farms; the dominant antibiotic (trimethoprim) had a maximum concentration of 36.7 ng/g. Quinolones and tetracyclines were the most prevalent antibiotics in the vegetable farms. The five most abundant phyla in soil samples were Proteobacteria , Actinobacteria , Acidobacteria , Chloroflexi and Firmicutes , while the five most abundant phyla in root samples were Proteobacteria , Actinobacteria , Bacteroidetes , Firmicutes and Myxococcota . Macrolides were significantly correlated with microbial community composition changes in soil samples, while sulfonamides were significantly correlated with microbial community composition changes in root samples. Soil properties (total carbon and nitrogen contents and pH) influenced the shifts in microbial communities in rhizosphere soils and roots. This study provides evidence that low residual antibiotic levels in vegetable farms can shift microbial community structures, potentially affecting agroecosystem stability. However, the degree to which the shift occurs could be regulated by environmental factors, such as soil nutrient conditions.

Keywords: vegetable farms; antibiotics; rhizosphere; microbial community; organic fertilizers; canonical-correlation analyses (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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