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Type: | Artigo |
Title: | Adenanthera pavonina trypsin inhibitor retard growth of Anagasta kuehniella (Lepidoptera: Pyralidae) |
Author: | Rodrigues Macedo, Maria Ligia Durigan, Roberta Aparecida da Silva, Desiree Soares Marangoni, Sergio Machado Freire, Maria das Gracas Postali Parra, Jose Roberto |
Abstract: | Anagasta kuehniella is a polyphagous pest that feeds on a wide variety of stored products. The possible roles suggested for seed proteinase inhibitors include the function as a part of the plant defensive system against pest via inhibition of their proteolytic enzymes. In this study, a trypsin inhibitor (ApTI) was purified from Adenanthera pavonina seed and was tested for insect growth regulatory effect. The chronic ingestion of ApTI did result in a significant reduction in larval survival and weight. Larval and pupal developmental time of larvae fed on ApTI diet at 1% was significantly longer; the larval period was extended by 5 days and pupal period was 10 days longer, therefore delaying by up to 20 days and resulting in a prolonged period of development from larva to adult. As a result, the ApTI diet emergence rate was only 28% while the emergence rate of control larvae was 80%. The percentage of surviving adults (%S) decreased to 62%. The fourth instar larvae reared on a diet containing 1% ApTI showed a decrease in tryptic activity of gut and that no novel proteolytic form resistant to ApTI was induced. In addition, the tryptic activity in ApTI -fed larvae was sensitive to ApTI. These results suggest that ApTI have a potential antimetabolic effect when ingested by A. kuehniella |
Subject: | Inibidores de proteinase |
Country: | Estados Unidos |
Editor: | Wiley |
Rights: | Fechado |
Identifier DOI: | 10.1002/arch.20352 |
Address: | https://onlinelibrary.wiley.com/doi/full/10.1002/arch.20352 |
Date Issue: | 2010 |
Appears in Collections: | IB - Artigos e Outros Documentos |
Files in This Item:
File | Description | Size | Format | |
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000281399100002.pdf | 277.09 kB | Adobe PDF | View/Open |
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