Enhanced Pathogenicity of Bacillus thuringiensis Mixed with a Culture Broth of an Entomopathogenic Bacterium, Xenorhabdus sp
제노랍두스 곤충병원세균 배양액의 비티 미생물 약제 약효증진 효과

Sam-Yeol Seo, Haet-Nim Ahn, Seong-Hyeon Eom, Eun-Yeong Im, Ji-Young Park, Yong-Gyun Kim
2012 Korean journal of applied entomology  
The entomopathogenic bacterium, Xenorhabdus sp., was isolated from an entomopathogenic nematode, Steinernema monticolum. When these bacteria were injected into the hemocoel of the diamondback moth, Plutella xylostella, they caused significant mortality. However, the bacterium was not pathogenic when it was administered orally. This study showed that Xenorhabdus sp. significantly enhanced oral pathogenicity of Bacillus thuringiensis (Bt) against the last instar larvae of P. xylostella. Different
more » ... lostella. Different ratios of culture broth of Xenorhabdus sp. and Bt showed significantly different pathogenicities against P. xylostella. In field tests, the optimal bacterial mixture significantly enhanced control efficacy against P.xylostella compared to Bt treatment alone. These results demonstrated that Xenorhabdus sp. culture broth can be developed as a potent biopesticide by enhancing the insecticidal efficacy of Bt.
doi:10.5656/ksae.2011.12.0.076 fatcat:b26tsosldvgifl5asgpnkuqs3e