0000000000136441

AUTHOR

Asim Gulzar

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Bacillus thuringiensis Vip3Aa Toxin Resistance in Heliothis virescens (Lepidoptera: Noctuidae)

2017

ABSTRACT Laboratory selection with Vip3Aa of a field-derived population of Heliothis virescens produced >2,040-fold resistance in 12 generations of selection. The Vip3Aa-selected (Vip-Sel)-resistant population showed little cross-resistance to Cry1Ab and no cross-resistance to Cry1Ac. Resistance was unstable after 15 generations without exposure to the toxin. F 1 reciprocal crosses between Vip3Aa-unselected (Vip-Unsel) and Vip-Sel insects indicated a strong paternal influence on the inheritance of resistance. Resistance ranged from almost completely recessive (mean degree of dominance [ h ] = 0.04 if the resistant parent was female) to incompletely dominant (mean h = 0.53 if the resistan…

0106 biological sciences0301 basic medicineMultifactorial Inheritancemedia_common.quotation_subjectPopulationInsectBiology01 natural sciencesApplied Microbiology and BiotechnologyInsecticide ResistanceLepidoptera genitaliaHemolysin Proteins03 medical and health sciencesBacterial ProteinsBacillus thuringiensisInvertebrate MicrobiologyAnimalsSelection GeneticeducationCrosses Geneticmedia_commonGeneticseducation.field_of_studyBacillus thuringiensis ToxinsEcologyHeliothis virescensfungibiology.organism_classificationSurvival AnalysisEndotoxinsLepidoptera010602 entomology030104 developmental biologyCry1AcPaternal InheritanceNoctuidaeBiological AssayPEST analysisFood ScienceBiotechnologyApplied and Environmental Microbiology
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