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자료유형
학술저널
저자정보
Jung, Sung-Chae (Department of Agricultural Biology, Andong National University) Kwoen, Min (Environment Management Division, National Institute of Highland Agriculture, RDA) Choi, Jae-Young (Department of Entomology, School of Agricultural Biotechnology, Seoul National University) Je, Yeon-Ho (Department of Entomology, School of Agricultural Biotechnology, Seoul National University) Kim, Yong-Gyun (Department of Agricultural Biology, Andong National University)
저널정보
한국응용곤충학회 Journal of Asia-Pacific Entomology Journal of asia-pacific entomology 제9권 제3호
발행연도
2006.1
수록면
255 - 263 (9page)

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Two endoparasitoids, Cotesia plutellae and C. glomerata, parasitize the diamondback moth, Plutella xylostella, and induce significant host immunosuppression. This study analyzed the susceptibility changes of the parasitized P. xylostella against other pathogens using an entomopathogenic bacterium, Xenorhabdus nematophila (Xn), and a viral pathogen, Autographa californica nucleopolyhedrosis virus (AcNPV). The P. xylostella parasitized by either C. plutellae or C. glomerata exhibited higher susceptibilities to both microbial pathogens than the nonparasitized. To determine the parasitism factors inducing the enhanced susceptibility, three polydnaviral genes so far successfully cloned were selected from C. plutellae bracovirus (CpBV). CpBV-lectin and CpBV15${\alpha}/{\beta}$ were inserted into AcNPV under a CpBV promote and analyzed in their pathogenicities against P. xylostella larvae. Two AcNPVs recombined with CpBV15${\alpha}/{\beta}$ were more potent than the control AcNPV recombined with an enhanced green fluorescent protein gene or the AcNPV recombined with CpBV-lectin. These results suggest that the wasp parasitization enhances other pathogen susceptibilities by inducing host immunosuppression, in which the symbiotic polydnavirus can play significant role in the enhanced susceptibility.

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