Recently, a novel mobile colistin resistance gene, mcr-8, was identified in Klebsiella pneumoniae. Here, we report the identification of mcr-8 and its variant, mcr-8.4, in Raoultella ornithinolytica isolates which also belong to Enterobacteriaceae family. The mcr-8 gene was located on transferrable plasmids with difference sizes. Notably, the transferability of mcr-8-carrying plasmids was enhanced once they entered into Escherichia coli hosts and multiple β-lactamase genes could co-transfer with mcr-8. These findings expand our knowledge of mcr-8-carrying bacterial species.
CITATION STYLE
Wang, X., Wang, Y., Zhou, Y., Wang, Z., Wang, Y., Zhang, S., & Shen, Z. (2019). Emergence of colistin resistance gene mcr-8and its variant in raoultella ornithinolytica. Frontiers in Microbiology, 10(FEB). https://doi.org/10.3389/fmicb.2019.00228
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