PM1, a novel virulent bacteriophage that infects Pectobacterium carotovorum subsp. carotovorum , was isolated. Its morphological features were examined by electron microscopy, which indicated that this phage belongs to the family Myoviridae . It has a 55,098-bp genome, including a 2,665-bp terminal repeat. A total of 63 open reading frames (ORFs) were predicted, but only 20 ORFs possessed homology with functional proteins. There is one tRNA coding region, and the GC-content of the genome is 44.9 %. Most ORFs in bacteriophage PM1 showed high homology to enterobacteria phage ΦEcoM-GJ1 and Erwinia phage νB EamM-Y2. Like these bacteriophages, PM1 encodes an RNA polymerase, which is a hallmark of T7-like phages. There is no integrase or repressor, suggesting that PM1 is a virulent bacteriophage.
Archives of Virology – Springer Journals
Published: Aug 1, 2014
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