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Type: Artigo de periódico
Title: Evaluation of the Adenanthera pavonina seed proteinase inhibitor (ApTI) as a bioinsecticidal tool with potential for the control of Diatraea saccharalis
Author: da Silva, Walciane
Machado Freire, Maria das Gracas
Postali Parra, Jose Roberto
Marangoni, Sergio
Rodrigues Macedo, Maria Ligia
Abstract: Diatraea saccharalis, is a major sugarcane pest, causing damage to the stalks of sugarcane plants. In this study, a trypsin inhibitor (ApTI) was purified from Adenanthera pavonina seeds and was tested for its insect growth regulatory effect. ApTI showed a dose-dependent effect on average larval weight and survival. 0.1% ApTI produced approximately 67% and 50% decreases in weight and survival larval, respectively. The results from dietary utilization experiments with D. saccharalis larvae showed a reduction in the efficiency of conversion of ingested food and digested food, and an increase in approximate digestibility and metabolic cost. The level of trypsin was significantly decreased (ca. 55%) in the midgut of larvae reared on a diet containing 0.05% ApTI and the trypsin activity in ApTI-fed larvae demonstrated sensitivity to ApTI. The action of ApTI on the development of D. saccharalis larvae shows that this protein may have great toxic potential. (C) 2011 Elsevier Ltd. All rights reserved.
Subject: Lepidoptera
Action mechanism
Nutritional indices
Editor: Elsevier
Rights: fechado
Identifier DOI: 10.1016/j.procbio.2011.11.002
Date Issue: 2012
Appears in Collections:IB - Artigos e Outros Documentos

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