Deterrent activity of plant lectins on cowpea weevil Callosobruchus maculatus (F.) oviposition |
| |
Authors: | Sadeghi Amin Van Damme Els J M Peumans Willy J Smagghe Guy |
| |
Affiliation: | Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium. |
| |
Abstract: | A set of 14 plant lectins was screened in a binary choice bioassay for inhibitory activity on cowpea weevil Callosobruchus maculatus (F.) oviposition. Coating of chickpea seeds (Cicer arietinum L.) with a 0.05% (w/v) solution of plant lectins caused a significant reduction in egg laying. Control experiments with heat inactivated lectin and BSA indicated that the observed deterrent effects are specific and require carbohydrate-binding activity. However, no clear correlation could be established between deterrent activity and sugar-binding specificity/molecular structure of the lectins. Increasing the insect density reduced the inhibitory effect of the lectins confirming that female insects are capable of adjusting their oviposition rates as a function of host availability. |
| |
Keywords: | Plant lectin Cowpea weevil Callosobruchus maculatus Binary choice assay Oviposition Egg development |
本文献已被 ScienceDirect PubMed 等数据库收录! |