title: Symbiosis-independent and symbiosis-incompetent mutants of Bdellovibrio bacteriovorus 109J.
abstract: Symbiosis-independent (Sin) mutants were isolated from the symbiosis-dependent and symbiosis-competent (Sdcomp+) Bdellovibrio bacteriovorus 109J. Independently isolated Sin mutants were examined for their symbiosis competence and most were found to be comp+. Bdellovibrios comp- were selected from the Sincomp+ mutants. The Sincomp+ bdellovibrios are always at a selective disadvantage, either against Sincomp- bdellovibrios (in organic medium) or against Sdcomp+ bdellovibrios (in buffer with Escherichia coli cells).
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D002452:Cell Count; D003470:Culture Media; D004926:Escherichia coli / Q000254:growth & development; D009154:Mutation; D011402:Pronase / Q000378:metabolism; D012260:Ribonucleases / Q000378:metabolism; D013559:Symbiosis
chemical_list: D003470:Culture Media; D012260:Ribonucleases; D011402:Pronase