Reversal of resistance to Bacillus thuringiensis in Plutella xylostella.
نویسندگان
چکیده
منابع مشابه
Functional identification of three new genes involved in resistance to Bacillus thuringiensis in Plutella xylostella
The widespread and sustained exploitation of the entomopathogen Bacillus thuringiensis (Bt) in the control of insects, pests and disease vectors is threatened by the evolution of resistance. In the present work, the construction of subtractive libraries and analysis of gene function by RNA interference-mediated gene silencing (RNAi) were combined to determine the molecular basis of resistance t...
متن کاملCross-Resistance to Bacillus thuringiensis Toxin CryIF in the Diamondback Moth (Plutella xylostella).
Selection with Bacillus thuringiensis subsp. kurstaki, which contains CryIA and CryII toxins, caused a >200-fold cross-resistance to CryIF toxin from B. thuringiensis subsp. aizawai in the diamondback moth, Plutella xylostella. CryIE was not toxic, but CryIB was highly toxic to both selected and unselected larvae. The results show that extremely high levels of cross-resistance can be conferred ...
متن کاملSusceptibility of Plutella xylostella (L.) (Lepidoptera: Plutellidae) populations in Mexico to commercial formulations of Bacillus thuringiensis.
Populations of diamondback moth, Plutella xylostella (L.), sampled from commercial fields of crucifers in three states of Mexico, were tested for susceptibility to commercial formulations of Bacillus thuringiensis subsp. kurstaki (Berliner) (Dipel 2X), B. thuringiensis subsp. aizawai (XenTari), delta endotoxin Cry 1C (MC), and CryIA(c) (MVP), and a mixture of B. thuringiensis subsp. kurstaki an...
متن کاملMannose phosphate isomerase isoenzymes in Plutella xylostella support common genetic bases of resistance to Bacillus thuringiensis toxins in Llpidopteran species.
A strong correlation between two mannose phosphate isomerase (MPI) isoenzymes and resistance to Cry1A toxins from Bacillus thuringiensis has been found in a Plutella xylostella population. MPI linkage to Cry1A resistance had previously been reported for a Heliothis virescens population. The fact that the two populations share similar biochemical, genetic, and cross-resistance profiles of resist...
متن کاملVariation in susceptibility to Bacillus thuringiensis toxins among unselected strains of Plutella xylostella.
So far, the only insect that has evolved resistance in the field to Bacillus thuringiensis toxins is the diamondback moth (Plutella xylostella). Documentation and analysis of resistant strains rely on comparisons with laboratory strains that have not been exposed to B. thuringiensis toxins. Previously published reports show considerable variation among laboratories in responses of unselected la...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1994
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.91.10.4120