Abstract:
:Photorhabdus (Enterobacteriaceae) bacteria are pathogenic to insects and mutualistic with entomopathogenic Heterorhabditis nematodes. Photorhabdus luminescens subsp. akhurstii LN2, associated with Heterorhabditis indica LN2, shows nematicidal activity against H. bacteriophora H06 infective juveniles (IJs). In the present study, an rpoS mutant of P. luminescens LN2 was generated through allelic exchange to examine the effects of rpoS deletion on the nematicidal activity and nematode development. The results showed that P. luminescens LN2 required rpoS for nematicidal activity against H06 nematodes, normal IJ recovery and development of H. indica LN2, however, not for the bacterial colonization in LN2 and H06 IJs. This provides cues for further understanding the role of rpoS in the mutualistic association between entomopathogenic nematodes and their symbionts.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Qiu X,Wu C,Cao L,Ehlers RU,Han Rdoi
10.1093/femsle/fnw035subject
Has Abstractpub_date
2016-03-01 00:00:00issue
6eissn
0378-1097issn
1574-6968pii
fnw035journal_volume
363pub_type
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