Susceptibility of a field-derived, Bacillus thuringiensis-resistant strain of diamondback moth to in vitro-activated Cry1Ac toxin
Article Abstract:
Research has been conducted on the Plutella xylostella, a diamondback moth. The use of the crystalline, solubilized and activated forms of the Bacillus thuringiensis Cry1Ac delta-endotoxin in examining the resistant and susceptible forms of this this moth is described.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2001
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Common, but complex, mode of resistance of Plutella xylostella to Bacillus thuringiensis toxins Cry1Ab and Cry1Ac
Article Abstract:
The genetic and biochemical bases of resistance of Cry1Ab-SEL to Cry1Ab are studied and these are compared to the nature of Cry1Ac resistance in CryAc-SEL. Results reveal that resistance to Cry1Ab in Cry1Ab-SEL is similar to Cry1Ac in Cry1Ac-SEL.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
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A change in a single midgut receptor in the diamondback moth (Plutella xylostella) is only in part responsible for field resistance to Bacillus thuringiensis subsp. kurstaki and B. thuringiensis subsp. aizawai
Article Abstract:
Two subpopulations of diamondback moths (SERD3) exhibiting resistance to Bacillus (B.) thuringiensis subsp. aizawai and B. thuringiensis subsp. kurstaki were analyzed to determine the mechanisms of microbial resistance. Analysis of the Plutella xylostela SERD3 subpopulations indicated the presence of receptor-independent, unstable resistance mechanisms and the absence of cross-resistance to B. thuringiensis insecticidal crystal proteins. Furthermore, selection experiments confirmed the presence of genetic variation that mediates resistance to B. thuringiensis subspecies.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
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- Abstracts: Mannose phosphate isomerase isoenzymes in Plutella xylostella support common genetic bases of resistance to Bacillus thuringiensis toxins in Lepidopteran species
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