Genomic insights into the antibiotic resistance pattern of the tetracycline-degrading bacterium, Arthrobacter nicotianae OTC-16
文献类型： 外文期刊
作者： Zhang, Xin 1 ; Zhu, Rongrong 1 ; Li, Weilin 1 ; Ma, Junwei 2 ; Lin, Hui 2 ;
作者机构： 1.Zhejiang A&F Univ, Coll Forest & Biotechnol, Hangzhou 311300, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Environm Resources Soil & Fertilizers, Hangzhou 310021, Peoples R China
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.38； 五年影响因子：5.134 ）
ISSN： 2045-2322
年卷期： 2021 年 11 卷 1 期
页码：
收录情况： SCI
摘要： Although many bacteria have the potential to remove antibiotic residues from environmental niches, the benefits of using antibiotic-degrading bacteria to manage antibiotic pollution should be assessed against the risk of the potential expansion of antimicrobial resistance. This study investigated the antibiotic resistance pattern of the bacterium Arthrobacter nicotianae OTC-16, which shows substantial biodegradation of oxytetracycline (OTC)/tetracycline. The results showed that this strain could be resistant to at least seven categories of 15 antibiotics, based on antimicrobial susceptibility testing. The genome of A. nicotianae OTC-16 contains one chromosome (3,643,989 bp) and two plasmids (plasmid1, 123,894 bp and plasmid2, 29,841 bp). Of the 3,561 genes isolated, eight were related to antibiotic resistance. During OTC degradation by the strain OTC-16, the expression of ant2ia, sul1, tet33, and cml_e8 in the plasmid, and one gene (tetV) in the chromosome were tracked using real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Only the plasmid-derived resistance genes were up-regulated in the presence of OTC. The presence of OTC increased the tolerance of strain OTC-16 to streptomycin sulphate. The findings of this study can help deepen our understanding of the behavioural characteristics of resistance genes and adaptive evolution of drug-resistant bacteria.
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