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Journal of asia-pacific entomology v.7 no.3, 2004년, pp.283 - 287   피인용횟수: 12

Juvenile Hormone Esterase of Diamondback Moth, Plutella xylostella, and Parasitism of Cotesia plutellae

Lee, Sunyoung    (Department of Agricultural Biology, College of Natural Sciences, Andong National University   ); Kim, Yonggyun    (Department of Agricultural Biology, College of Natural Sciences, Andong National University  );
  • 초록  

    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.


  • 주제어

    Cotesia plutellae .   endoparasitic wasp .   HEPTAT .   JHE .   Plutella xylostella.  

  • 참고문헌 (26)

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  • 이 논문을 인용한 문헌 (12)

    1. Kim Yonggyun ; Bae Sangki ; Lee Sunyoung 2004. "Polydnavirus Replication and Ovipositional Habit of Cotesia plutellae" 한국응용곤충학회지 = Korean journal of applied entomology, 43(3): 225~231     
    2. 2005. "" Journal of asia-pacific entomology, 8(2): 211~217     
    3. 2005. "" Journal of asia-pacific entomology, 8(3): 249~255     
    4. 2005. "" Journal of asia-pacific entomology, 8(3): 291~296     
    5. 2005. "" Journal of asia-pacific entomology, 8(4): 359~366     
    6. 2005. "" Journal of asia-pacific entomology, 8(1): 53~60     
    7. 2007. "" Journal of asia-pacific entomology, 10(4): 351~356     
    8. 2007. "" Journal of asia-pacific entomology, 10(2): 121~129     
    9. 2007. "" Journal of asia-pacific entomology, 10(3): 181~191     
    10. 2008. "" Journal of asia-pacific entomology, 11(2): 83~87     
    11. 2008. "" Journal of asia-pacific entomology, 11(2): 103~106     
    12. 2009. "" Journal of asia-pacific entomology, 12(4): 277~283     

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