Isolation of insect pathogenic bacteria, Providencia rettgeri, from Heterorhabditis spp.

• DOI: 10.1111/j.1365-2672.1995.tb05022.x
• Publication Date: 2008-03-11T14:26:29Z
• Authors: T.J. Jackson; Huayan Wang; Miriam J. Nugent; Christine T. Griffin; Ann M. Burnell; Barbara C.A. Dowds
• Keywords: Providencia; Isolation; Pathogenic bacteria

Nematodes of the genus Heterorhabditis carry bacteria Photorhabdus into insects including pests horticultural crops. The kill insect and provide conditions which allow for growth development nematodes. It is reported here that majority spp. strains tested contained a second bacterial species was identified as Providencia rettgeri. Injection waxmoth larvae showed P. rettgeri at least pathogenic sp. K122. Both had LD 50 values less than one cell/larva, but killed considerably faster rate K122 both 28°C 9°C. Since kills very slowly low temperatures, it appeared might be better pest control agent under these conditions. However, not when carried by nematode, indicating nematode suppressed either its release or pathogenicity. will necessary to find ways bypassing inhibiting this suppression fulfil potential in control.