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AuthorBoukedi, Hanen
AuthorKhedher, Saoussen Ben
AuthorHadhri, Rania
AuthorJaoua, Samir
AuthorTounsi, Slim
AuthorAbdelkefi-Mesrati, Lobna
Available date2020-11-04T10:00:41Z
Publication Date2017
Publication NameToxicon
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.toxicon.2017.02.018
URIhttp://hdl.handle.net/10576/16911
AbstractBacillus thuringiensis strain BLB459 supernatant showed a promising activity against Lepidopteran pests with extremely damages in the larvae midgut. Investigations of the genes that encode secreted toxin demonstrated that this strain harbored a vip3-type gene named vip3(459). Based on its original nucleotide and amino acid sequences, this gene was cloned into pET-14b vector and overexpressed in Escherichia coli. The expressed protein was purified and tested against different insects and interestingly the novel toxin demonstrated a remarkable activity against the stored products pest Ephestia kuehniella and the polyphagous insects Spodoptera littoralis and Agrotis segetum. As demonstrated, the acute activity of Vip3(459) protein against A. segetum can be due to its original amino acids sequence and the putative receptors of this toxin in the larvae midgut. These results demonstrated that this Vip3 toxin showed a wide spectrum of activity against Lepidoptera and support its use as a biological control agent.
Languageen
PublisherElsevier Ltd
SubjectBacillus thuringiensis
Biological control
Lepidoptera
Toxicity
Vegetative insecticidal protein
TitleVegetative insecticidal protein of Bacillus thuringiensis BLB459 and its efficiency against Lepidoptera
TypeArticle
Pagination89-94
Volume Number129
dc.accessType Abstract Only


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