What drives changes in the virulence and antibiotic resistance ofVibrio harveyiin the South China Sea?
文献类型： 外文期刊
作者： Deng, Yiqin 1 ; Xu, Liwen 1 ; Liu, Songlin 3 ; Wang, Qian 1 ; Guo, Zhixun 1 ; Chen, Chang 4 ; Feng, Juan 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab South China Sea Fishery Resources Exploit, Minist Agr & Rural Affairs, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Trop Aquaculture Res & Dev Ctr, Hainan, Peoples R China
3.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Peoples R China
4.Chinese Acad Sci, South China Sea Inst Oceanol, Xisha Nansha Ocean Observat & Res Stn, Guangzhou, Peoples R China
关键词： antibiotic resistance; driving factors; multilocus sequence analysis; Vibrio harveyi; virulence gene
期刊名称：JOURNAL OF FISH DISEASES （ 影响因子：2.767； 五年影响因子：2.689 ）
ISSN： 0140-7775
年卷期： 2020 年 43 卷 8 期
页码：
收录情况： SCI
摘要： To understand the driving environmental factors in changes of bacterial virulence and antibiotic resistance, we determined the prevalence, antibiotic resistance and antibiotic resistance and virulence genes ofVibrio harveyiisolated from diseased marine fish in south coastal China. We isolated 2, 52 and 53V. harveyistrains from Fujian, Hainan and Guangdong, respectively, and identified them by multilocus sequence analysis of 16S rRNA-toxR(Vh)-rctB. Nine typical virulence genes were represented at a higher average in Hainan (7.39 +/- 0.24) than in Guangdong (6.91 +/- 0.28). Five atypical virulence genes were detected in some isolates. In particular,flaCandvvhwere detected in more than 60% of isolates. Their average number was significantly higher in Hainan (2.30 +/- 0.20) than in Guangdong (1.70 +/- 0.10). Multidrug resistance was widespread with an average resistance to 4.57 +/- 0.18 of 15 antibiotics. Both the average number of antibiotic resistance and antibiotic resistance genes were higher in Hainan (5.25 +/- 0.27 and 1.11 +/- 0.15, respectively) than in Guangdong (3.87 +/- 0.21 and 0.75 +/- 0.10, respectively). This study demonstrated that there were more virulence genes and greater drug resistance in Hainan than in Guangdong, suggesting that warmer temperature and antibiotics pollutants probably enhance antibiotic resistance and bacterial infection.
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