Abstract
A virulent phage, named ST20, infecting Escherichia coli O165:H8 was isolated from wastewater and subjected to genomic sequencing using the Illumina HiSeq system. Genomic analysis revealed that it contains double-stranded DNA, and its complete genome consists of 44,517 nucleotides with an average GC content of 50.81%. Morphological observations showed that phage ST20 belongs to the order Caudovirales and the family Siphoviridae due to its characteristic icosahedral capsid and a long noncontractile tail. This phage was further characterized by one-step growth curve analysis and measurement of its stability at 4 °C. The study has implications for the development of potential biocontrol agents.
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Acknowledgments
We wish to thank Yanwen Xiong of the Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing 102206, China, for supplying Escherichia coli O165:H8. We also wish to thank Miss Jingnan Liang of the Institute of Microbiology, Chinese Academy of Sciences, for her assistance in TEM sample preparation.
Funding
This study was funded by grants from the National Natural Science Foundation of China (No. 50978250 and No. 51378485).
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H.L. and X.L. conceived and designed the experiments. H.L. performed the experiments and analyzed the data. H.L., M.L., and X.L. wrote and corrected the draft. All authors reviewed the manuscript.
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Liu, H., Lu, M. & Liu, X. Characterization and complete genome sequence of the virulent phage ST20 infecting Escherichia coli O165:H8. Arch Virol 164, 3115–3119 (2019). https://doi.org/10.1007/s00705-019-04399-3
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DOI: https://doi.org/10.1007/s00705-019-04399-3