Antibiotic resistance genes (ARGs) have attracted widespread attention as a new global pollutant, mainly due to the abuse of antibiotics. To investigate the diversity of ARGs in three rodent species, we used metagenomic sequencing analysis to analyze the diversity of antibiotic resistance genes of 17 individuals of Apodemus peninsulae and 17 individuals of Myodes rufocanus collected from Mudanfeng, and nine individuals of Apodemus agrarius collected from Sandaoguan. A total of 19 types and 248 subclasses of ARGs were detected in the three rodent species. Seven ARGs showed significant difference and five ARGs showed extremely significant difference between M. rufocanus and A. agrarius. Seven ARGs showed significant difference and four ARGs showed extremely significant difference between A. peninsulae and A. agrarius. Four ARGs showed significant difference and five ARGs showed extremely significant difference between M. rufocanus and A. peninsulae. ARGs showing high abundance in three rodents were macrolides, lincoamides, tetracyclines, and β-lactams. ARGs were widely distributed in the three rodent species. The significant differences in ARGs among different species might be due to the different distribution areas and their diet differentiation. The study could provide a basis for further studies of ARGs in mice and improve the understanding of the harm of ARGs transmission.
抗生素抗性基因(ARGs)作为全球新型污染物受到广泛关注,其产生的原因主要是抗生素的滥用。为探究大林姬鼠、棕背鼠平和黑线姬鼠的抗生素抗性基因多样性,采用宏基因组测序分析来自黑龙江牡丹峰的17只大林姬鼠、17只棕背鼠平和三道关的9只黑线姬鼠的抗生素抗性基因多样性。从3种啮齿动物中共检测到19种类型及248个亚类的ARGs。棕背鼠平和黑线姬鼠差异显著的ARGs有7个,差异极显著的有5个;大林姬鼠和黑线姬鼠差异显著的ARGs有7个,差异极显著的有4个;棕背鼠平和大林姬鼠差异显著的ARGs有4个,差异极显著的有5个。3种啮齿动物丰度较高的抗生素抗性基因大类为大环内酯类、林可酰胺类、四环素类、β-内酰胺类。ARGs已广泛存在于3种啮齿动物体内,不同物种之间抗生素抗性基因的多样性存在显著差异,产生差异的原因可能是由于3种啮齿动物的分布区不同并存在食性分化。本研究可以为啮齿动物抗生素抗性基因的后续研究提供依据,并加深对ARGs传播危害的认识。.
Keywords: