Serial selection for resistance to a wild-type and to a genetically modified nucleopolyhedrovirus in Trichoplusia ni. Milks, M., L. & Theilmann, D., A. Biological Control, 19(3):283-289, 2000.
abstract   bibtex   
In previous work, cabbage loopers (Trichoplusia ni) evolved 22- fold resistance to the single nucleocapsid nucleopolyhedrovirus of T. ni (TnSNPV) after 26 generations of selection with the virus. The goal of the present study was to determine if T. ni could evolve resistance to the recombinant Autographa californica multiple nucleocapsid nucleopolyhedrovirus (AcMNPV- AaIT) that; expresses an insect specific neurotoxin and to determine if it was influenced by prior development of resistance to TnSNPV. To answer these questions, the T. ni line that had been exposed to TnSNPV was divided into two sublines at generation 27. One of them was serially selected for resistance to AcRMNPV-AaIT (subline TnSNPV/AcMNPV-AaIT), while the other one was mock infected with distilled water (subline TnSNPV/H2O). The same was done with the line that was used as a control from generations 1 to 26 (subline H2O/AcMNPV-AaIT and subline H2O/H2O). After 17 generations of selection with AcMNPV-AaIT, T. ni that had not been previously exposed to TnSNPV evolved only twofold resistance to AcMNPV-AaIT, However, those that had been selected with TnSNPV evolved fourfold resistance to AcMNPV-AaIT. Exposure to AcMNPV-AaIT conferred cross-resistance to TnSNPV in only one subline, subline H2O/AcMNPV-AaIT. Resistance to AcMNPV-AaIT did not affect the developmental time, pupal weight, egg production, or percentage of egg hatch of T. ni. (C) 2000 Academic Press.
@article{
 title = {Serial selection for resistance to a wild-type and to a genetically modified nucleopolyhedrovirus in Trichoplusia ni},
 type = {article},
 year = {2000},
 pages = {283-289},
 volume = {19},
 websites = {<Go to ISI>://000165229100011},
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 source_type = {Journal Article},
 abstract = {In previous work, cabbage loopers (Trichoplusia ni) evolved 22- fold resistance to the single nucleocapsid nucleopolyhedrovirus of T. ni (TnSNPV) after 26 generations of selection with the virus. The goal of the present study was to determine if T. ni could evolve resistance to the recombinant Autographa californica multiple nucleocapsid nucleopolyhedrovirus (AcMNPV- AaIT) that; expresses an insect specific neurotoxin and to determine if it was influenced by prior development of resistance to TnSNPV. To answer these questions, the T. ni line that had been exposed to TnSNPV was divided into two sublines at generation 27. One of them was serially selected for resistance to AcRMNPV-AaIT (subline TnSNPV/AcMNPV-AaIT), while the other one was mock infected with distilled water (subline TnSNPV/H2O). The same was done with the line that was used as a control from generations 1 to 26 (subline H2O/AcMNPV-AaIT and subline H2O/H2O). After 17 generations of selection with AcMNPV-AaIT, T. ni that had not been previously exposed to TnSNPV evolved only twofold resistance to AcMNPV-AaIT, However, those that had been selected with TnSNPV evolved fourfold resistance to AcMNPV-AaIT. Exposure to AcMNPV-AaIT conferred cross-resistance to TnSNPV in only one subline, subline H2O/AcMNPV-AaIT. Resistance to AcMNPV-AaIT did not affect the developmental time, pupal weight, egg production, or percentage of egg hatch of T. ni. (C) 2000 Academic Press.},
 bibtype = {article},
 author = {Milks, M L and Theilmann, D A},
 journal = {Biological Control},
 number = {3}
}

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