Occurrence and antibacterial resistance of culturable antibiotic-resistant bacteria in the Fildes Peninsula, Antarctica

被引：30
作者：
Na, Guangshui [1 ,2 ,3 ,4 ]
Zhang, Wanli [1 ,2 ]
Gao, Hui [2 ]
Wang, Caixia [1 ,2 ]
Li, Ruijing [2 ]
Zhao, Fuqiang [2 ,4 ]
Zhang, Keyu [1 ,2 ]
Hou, Chao [1 ,2 ]
机构：
[1] Shanghai Ocean Univ, Coll Marine Ecol & Environm, Shanghai 201306, Peoples R China
[2] Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China
[3] Hainan Trop Ocean Univ, Coll Ecol & Environm, Sanya 572022, Peoples R China
[4] Dalian Ocean Univ, Coll Marine Technol & Environm, Dalian 116023, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2021年 / 162卷
基金：
中国国家自然科学基金;
关键词：
Antibiotic resistant bacteria; Antibiotic resistance genes; Occurrence; Resistance characteristics; Fildes Peninsula;
D O I：
10.1016/j.marpolbul.2020.111829
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Quantifying the occurrence of Antarctic antibiotic-resistant bacteria (ARB) is essential for assessing the level of pollution and assessing the "baseline" or background level of ARB in human uninhabited environments. Animal feces, soil, and sediments were sampled from Fildes Peninsula. The abundance of sulfamethazine- and ciprofloxacin-resistance bacteria and antibotic resistance genes (ARGs) within ARB were investigated. The results showed Ciprofloxacin- and Sulfamethazine-resistant bacteria isolated from samples accounted for the highest abundances of 30 CFU/g and 79.8 CFU/g, respectively. The dominant genus of Sulfamethazine-and quinolone-resistance bacteria was Pseudomonas and Arthrobacter, respectively. 106 ARGs were detected from ARB. Strong positive correlations between mobile genetic elements (MGEs) and ARGs were found, what is relatively novel observation that the mechanism is confirmed to also occur in the Antarctic. This study reveals the compositional characteristics of ARGs of strains in Antarctic, providing support for the source of Antarctic antibiotic resistance and drug resistance mechanisms.
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页数：11
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