Bacillus thuringiensis resistance in Plutella — too many trees?
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چکیده
منابع مشابه
Bacillus thuringiensis resistance in Plutella - too many trees?
Plutella xylostella was the first insect for which resistance to Bacillus thuringiensis was reported in the field, yet despite many studies on the nature of this resistance phenotype its genetic and molecular basis remains elusive. Many different factors have been proposed as contributing to resistance, although in many cases it has not been possible to establish a causal link. Indeed, there ar...
متن کاملFunctional 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 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 کاملResistance mechanisms to Bacillus thuringiensis subspp. kurstaki and aizawai in a multi-resistant field population of Plutella xylostella from Malaysia
A field population (SERD3) of Plutella xylostella L. collected in December 1994, and resistant to various insecticides, including Bacillus thuringiensis subsp. kurstaki (Btk) and B.t. subsp. aizawai (Bta), was selected with Btk (Btk-Sel) and Bta (Bta-Sel). Little evidence of cross-resistance was observed. Binding to midgut brush border membrane vesicles was examined for insecticidal crystal pro...
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ژورنال
عنوان ژورنال: Current Opinion in Insect Science
سال: 2016
ISSN: 2214-5745
DOI: 10.1016/j.cois.2016.04.007