Journal of Microbiology

Journal Articles

Prevalence and characteristics of the mcr-1 gene in retail meat samples in Zhejiang Province, China: Biao Tang , Jiang Chang , Yi Luo , Han Jiang , Canying Liu , Xingning Xiao , Xiaofeng Ji , Hua Yang; J. Microbiol. 2022;60(6):610-619. Published online March 31, 2022; DOI: https://doi.org/10.1007/s12275-022-1597-y

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Considering the serious threat to food safety and public health posed by pathogens with colistin resistance, colistin was banned as a growth promoter in 2017 in China. In recent years, the resistance rate of Escherichia coli isolated from animal intestines or feces to colistin has decreased. However, the prevalence and characteristics of the mcr-1 gene in retail meat have not been well explored. Herein, 106 mcr-1-negative and 16 mcr- 1-positive E. coli isolates were randomly recovered from 120 retail meat samples and screened using colistin. The 106 E. coli isolates showed maximum resistance to sulfafurazole (73.58%) and tetracycline (62.26%) but susceptibility to colistin (0.00%). All 16 mcr-1-positive E. coli isolates showed resistance to colistin, were extended spectrum beta-lactamase (ESBL)-positive and exhibited complex multidrug resistance (MDR). For these 16 isolates, 17 plasmid replicons and 42 antibiotic resistance genes were identified, and at least 7 antibiotic resistance genes were found in each isolate. Acquired disinfectant resistance genes were identified in 75.00% (12/16) of the isolates. Furthermore, comparative genomic and phylogenetic analysis
results
indicated that these 16 mcr-1-positive E. coli isolates and the most prevalent mcr-1-harboring IncI2 plasmid in this study were closely related to other previously reported mcr-1-positive E. coli isolates and the IncI2 plasmid, respectively, showing their wide distribution. Taken together, our findings showed that retail meat products were a crucial reservoir of mcr-1 during the colistin ban period and should be continuously monitored.

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Co-occurrence of mcr-1.1, mcr-3.40, and tmexCD1-toprJ1 on a hybrid IncFIB/IncHI1B plasmid in Klebsiella pneumoniae from pork in Hainan, China
Hanzhang Cai, Lu Liu, Yao Wang, Yingbo Shen, Congming Wu, Dejun Liu, Yang Wang, Xueliang Zhao, Weishuai Zhai
International Journal of Food Microbiology.2026; 446: 111540. CrossRef
Surveillance of Escherichia coli antimicrobial resistance in pig farms in Zhejiang province, China: High prevalence of multidrug resistance and risk-associated genes
Yue Yang, Yuhan Sun, Zhijin Zhou, Yu Song, Yujie Zhu, Wei Zhou, Min Yue, Guoping Zhao, Han Jiang, Biao Tang
Microbial Pathogenesis.2025; 204: 107598. CrossRef
Genome-based assessment of antimicrobial resistance of Escherichia coli recovered from diseased swine in eastern China for a 12-year period
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Food Research International.2025; 221: 117261. CrossRef
Phenotypic and genomic analysis of pathogenic Enterobacteriaceae strains isolated from leafy vegetables: antibiotic resistance implications for public health
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Regression models from portable NIR spectra for predicting the carcass traits and meat quality of beef cattle
Nathália Veloso Trópia, Rizielly Saraiva Reis Vilela, Flávia Adriane de Sales Silva, Dhones Rodrigues Andrade, Adailton Camêlo Costa, Fernando Alerrandro Andrade Cidrini, Jardeson de Souza Pinheiro, Pauliane Pucetti, Mario Luiz Chizzotti, Sebastião de Cam
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IncHI1 plasmids mediated the tet(X4) gene spread in Enterobacteriaceae in porcine
Jiangang Ma, Juan Wang, Hua Yang, Mengru Su, Ruichao Li, Li Bai, Jie Feng, Yuting Huang, Zengqi Yang, Biao Tang
Frontiers in Microbiology.2023;[Epub] CrossRef
Prevalence and molecular characteristics of polymyxin-resistant Enterobacterales in a Chinese tertiary teaching hospital
Chenlu Xiao, Xuming Li, Lianjiang Huang, Huiluo Cao, Lizhong Han, Yuxing Ni, Han Xia, Zhitao Yang
Frontiers in Cellular and Infection Microbiology.2023;[Epub] CrossRef
Farm to table: colistin resistance hitchhiking through food
Absar Talat, Carla Miranda, Patrícia Poeta, Asad U. Khan
Archives of Microbiology.2023;[Epub] CrossRef
Detection of mcr-1-harbouring Escherichia coli by quantum dot labelling of synthetic small peptides mimicking lipopolysaccharide receptors
Chenghao Wang, Biao Tang, Jiusheng Wu, Xi Jin, Shuwen Ke, Hua Yang, Yuehuan Liu
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Genomic characterization of multidrug-resistance gene cfr in Escherichia coli recovered from food animals in Eastern China
Biao Tang, Juan Ni, Jiahui Lin, Yangying Sun, Hui Lin, Yuehong Wu, Hua Yang, Min Yue
Frontiers in Microbiology.2022;[Epub] CrossRef
Antimicrobial resistance and genomic characterization of Escherichia coli from pigs and chickens in Zhejiang, China
Wei Zhou, Rumeng Lin, Zhijin Zhou, Jiangang Ma, Hui Lin, Xue Zheng, Jingge Wang, Jing Wu, Yuzhi Dong, Han Jiang, Hua Yang, Zhangnv Yang, Biao Tang, Min Yue
Frontiers in Microbiology.2022;[Epub] CrossRef
The Occurrence and Genomic Characteristics of mcr-1-Harboring Salmonella from Retail Meats and Eggs in Qingdao, China
Changan Li, Xiulei Gu, Liping Zhang, Yuqing Liu, Yan Li, Ming Zou, Baotao Liu
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Contrasting patterns of the bacterial and archaeal communities in a high-elevation river in northwestern China: Yang Hu , Jian Cai , Chengrong Bai , Keqiang Shao , Xiangming Tang , Guang Gao; J. Microbiol. 2018;56(2):104-112. Published online February 2, 2018; DOI: https://doi.org/10.1007/s12275-018-7244-y

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Abstract PDF

The patterns of macrobiota in lotic ecosystems have been extensively explored, however, the dynamics of microbiota remain poorly investigated, especially in the high-elevation region. To address this deficit, we collected eight samples to unveil the bacterial and archaeal community in the Kaidu river, located at the arid region of northwestern China (an average of 2,500 m a.s.l.). For the bacterial community, phylogenetically Betaproteobacteria prevailed, followed by Alphaproteobacteria and Actinobacteria; at the finer genus level, Limnohabitans and Variovorax were prominent. Along the river, the bacterial community showed a continuous succession. Specifically, their α- and β-diversity gradually increased, suggesting a distance-decay pattern. Additionally, there was an ecological transition between the dominant and the rare sub-community along the river: the relative abundance of the dominant members gradually decreased as the rare members increased. We report that temperature and spatial distance were significantly related to the variation of bacterial community. Variance partitioning analysis showed that the environmental factors contributed more to the bacterial community than did the spatial distance. In the case of the archaeal community, the methanogenic groups, mainly Methanosaeta and Methanosarcina, were prominent within the Kaidu river. Unlike the continuous change in the patterns of the bacterial community, the archaeal community showed a constant pattern along the river. Our results showed that the archaeal community was independent of the environmental and spatial factors. We propose that the inoculation of soil-derived archaea is responsible for the archaeal community in the Kaidu river. Together, our study demonstrated that the bacterial community in the high-elevation Kaidu river is a continuum, whereas the archaeal community is not.

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Nature Ecology & Evolution.2025;[Epub] CrossRef
Planktonic archaea reveal stronger dispersal limitation and more network connectivity than planktonic bacteria in the Jinsha River of southwestern China
Ge Cui, Juan Chen, Chao Wang, Peifang Wang, Bo Zhang, Han Gao, Rui Fu
Freshwater Biology.2023; 68(11): 1995. CrossRef
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Haile Yang, Qiong Zhou, Xia Guo, Zhigang Liu, Hui Zhang, Hao Du
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Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams
Linlin Bao, Jie Chen, Hongjin Tong, Jun Qian, Xuyong Li
Journal of Environmental Management.2022; 311: 114865. CrossRef
Effect of Water Chemistry, Land Use Patterns, and Geographic Distances on the Spatial Distribution of Bacterioplankton Communities in an Anthropogenically Disturbed Riverine Ecosystem
Jun Zhao, Wang Peng, Mingjun Ding, Minghua Nie, Gaoxiang Huang
Frontiers in Microbiology.2021;[Epub] CrossRef
Bacterial community composition shaped by water chemistry and geographic distance in an anthropogenically disturbed river
Peng Wang, Jun Zhao, Hanyu Xiao, Wenjing Yang, Xiaofang Yu
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Journal of Microbiology.2019; 57(10): 852. CrossRef

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