title: Three-membered parasitic system: a bacteriophage, Bdellovibrio bacteriovorus, and Escherichia coli.
abstract: Two bacteriophages for Bdellovibrio bacteriovorus were isolated. One of the phages (VL-1) was isolated on a host-independent Bdellovibrio strain, and the other (VL-2) was isolated on a host-dependent strain. Both phages grew on host-dependent as well as on host-independent Bdellovibrio strains. The development of the phages in host-dependent bdellovibrios occurred only when the phage-infected bdellovibrios parasitized cells of other bacteria. In the absence of other bacteria, the phages adsorbed to the bdellovibrios and killed them and in the process lost their own plaque-forming ability.
mesh_terms: D000327:Adsorption; D001419:Bacteria / Q000187:drug effects / Q000254:growth & development*; D001435:Bacteriophages / Q000254:growth & development* / Q000302:isolation & purification; D002455:Cell Division; D003470:Culture Media; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development*; D008242:Lysogeny; D008854:Microscopy, Electron; D009154:Mutation; D012722:Sewage; D013307:Streptomycin / Q000494:pharmacology; D013997:Time Factors; D014871:Water Microbiology
chemical_list: D003470:Culture Media; D012722:Sewage; D013307:Streptomycin