Journal
BMC GENOMICS
Volume 16, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s12864-015-1757-0
Keywords
Spounavirinae; Thymidylate synthase; Dihydrofolate reductase; Bastille-like group; Bacteriophages
Funding
- High value-added Food Technology Development Program, Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET)
- Ministry for Food, Agriculture, Forestry, and Fisheries of Republic of Korea (IPET) [313037-3]
- Cooperative Research Program for Agriculture & Technology Development, Rural Development Administration, Republic of Korea [PJ009842]
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Background: Spounavirinae viruses have received an increasing interest as tools for the control of harmful bacteria due to their relatively broad host range and strictly virulent phenotype. Results: In this study, we collected and analyzed the complete genome sequences of 61 published phages, either ICTV-classified or candidate members of the Spounavirinae subfamily of the Myoviridae. A set of comparative analyses identified a distinct, recently proposed Bastille-like phage group within the Spounavirinae. More importantly, type 1 thymidylate synthase (TS1) and dihydrofolate reductase (DHFR) genes were shown to be unique for the members of the proposed Bastille-like phage group, and are suitable as molecular markers. We also show that the members of this group encode beta-lactamase and/or sporulation-related SpoIIIE homologs, possibly questioning their suitability as biocontrol agents. Conclusions: We confirm the creation of a new genus-the Bastille-like group-in Spounavirinae, and propose that the presence of TS1- and DHFR-encoding genes could serve as signatures for the new Bastille-like group. In addition, the presence of metallo-beta-lactamase and/or SpoIIIE homologs in all members of Bastille-like group phages makes questionable their suitability for use in biocontrol.
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