Cloning of Immune Protein Hemolin cDNA from the Indianmeal Moth, Plodia interpunctella, and its High Induction During Development and by Bacterial Challenge |
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Authors: | Tin Tin AYE Kyeong-Yeoll LEE Yong Jung KWON |
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Institution: | Department of Natural Fiber Science, Kyungpook National University, Daegu 702-701, Korea;Department of Agricultural Biology, Kyungpook National University, Daegu 702-701, Korea |
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Abstract: | Partial cDNA of hemolin, an insect immune protein, was cloned from indianmeal moth, Plodia interpunctella, and the rates of hemolin mRNA expression were demonstrated in each stage of development and also by bacterial injections. A deduced amino acid sequence from the cloned hemolin cDNA was approximately 44‐54% similar to hemolins of 5 other moths. During development the level of hemolin mRNA was the highest at the time of the larval‐pupal matamorphosis. Hemolin was also rapidly induced by the injection of bacteria into the 4th or the 5th instar larvae. Hemolin induction rate by bacterial challenge was higher in the 5th instar larvae than in 4th instars. Our results suggest that hemolin could have multiple roles that act both on cellular processes during development and on the immune reactions for the resistance to pathogen invasion. |
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Keywords: | Hemolins Immune proteins Metamorphosis Bacterial infection Gene expression |
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