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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2004.1
- 수록면
- 283 - 287 (5page)
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초록· 키워드
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An endoparasitic wasp, Cotesia plutellae, inhibits pupal metamorphosis of diamondback moth, Plutella xylostella. The parasitized larvae extended their larval stage about 2 days at 25$^{\circ}C$ and died after escape of wasp larvae for pupation. We set up a hypothesis that the wasp parasitization inhibits juvenile hormone (JH) degradation, which leads to extend larval stage and blocks metamorphosis. In this study, the activities of JH esterase (JHE), a major JH degrading enzyme in hemolymph, were analyzed by use of a surrogate substrate, HEPTAT (methyl 1-heptylthioacetothioate). Hemolymph JHE activities of P. xylostella showed a typical Michaelis-Menten enzyme kinetics in response to HEPTAT, where it exhibited K$\_$M/ at 19.7 ${\mu}$M and $V_{max}$ at 228.8 ${\mu}$M/min/${\mu}$1. The parasitized C. plutellae did not exhibit decrease of the JHE activity, but rather kept high JHE activity during the extended larval period.
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Parasitism of Cotesia plutellae Alters Morphological and Biochemical Characters of Diamondback Moth, Plutella xylostella
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Host Physiological Changes Due to Parasitization by a Braconid Wasp, Cotesia plutellae, on Diamondback Moth, Plutellae xylostella
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Cloning and Expression of a Cotesia plutellae Bracovirus Gene, ELP
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Two Homologous Parasitism-specific Proteins Encoded in Cotesia Plutellae Bracovirus (CpBV) and Their Expression Profile in Plutella xylostella
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Proteomic Analysis of Parasitism by Cotesia plutellae
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Molecular Characterization of a Novel Acetylcholinesterase from the Diamondback Moth, Plutella xylostella (L.)
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Mitochondrial DNA Sequence Variation of the Diamondback Moth, Plutella xylostella, in Korea
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