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  • Title: A survey of oenophages during wine making reveals a novel group with unusual genomic characteristics.
    Author: Philippe C, Jaomanjaka F, Claisse O, Laforgue R, Maupeu J, Petrel M, Le Marrec C.
    Journal: Int J Food Microbiol; 2017 Sep 18; 257():138-147. PubMed ID: 28651079.
    Abstract:
    Oenophages have so far been mostly isolated from red wines under malolactic fermentation (MLF), and correspond to temperate or ex-temperate phages of Oenococcus oeni. Their genomes are clustered into 4 integrase gene sequence groups, which are also related to the chromosomal integration site. Our aims were to survey the occurrence of oenophages in a broader and more diverse collection of samples than those previously explored. Active phages were isolated from 33 out of 166 samples, which mostly originated from must and MLF. Seventy one phage lysates were produced and 30% were assigned to a novel group with unusual genomic characteristics, called unk. All unk members produced similar RAPD and DNA restriction patterns, were negative by PCR for the signature sequences previously identified in the integrase and endolysin genes of oenophages, and lacked any BamHI restriction site in their genome. The data support that development of additional and novel signature genes for assessing oenophage diversity is now required.
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