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  • Title: Isolation of phages infecting Actinoplanes SN223 and characterization of two of these viruses.
    Author: Jarling M, Bartkowiak K, Robenek H, Pape H, Meinhardt F.
    Journal: Appl Microbiol Biotechnol; 2004 Apr; 64(2):250-4. PubMed ID: 14586581.
    Abstract:
    Phages infecting the industrially important Actinoplanes strain SN223 were isolated from soil samples collected at the shores of inland waters in Germany. The genome sizes range from 53 kb to 58 kb. Preliminary analyses revealed G+C contents comparable with the G/C bias of the host. Electron microscopy of three selected viruses displayed no obvious morphological differences, the phage heads being icosahedral and their tails non-contractible. Two of the phages (phiAsp2, phiAsp3.1) characterized in more detail are capable of provoking putative pseudolysogenic growth of the host bacterium. The carrier state for phiAsp2, in which cells are tightly packed with viruses, was demonstrated by electron microscopy. The latter phage is apparently widely distributed, as it was isolated from regions which are distantly located, i.e. more than 600 km apart from each other.
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