FN Archimer Export Format
PT J
TI Effect of crop plants on fitness costs associated with resistance to Bacillus thuringiensis toxins Cry1Ac and Cry2Ab in cabbage loopers
BT 
AF WANG, Ran
   TETREAU, Guillaume
   WANG, Ping
AS 1:1,2,3;2:1,4;3:1;
FF 1:;2:;3:;
C1 Cornell Univ, New York State Agr Expt Stn, Dept Entomol, Geneva, NY 14456 USA.
   Nanjing Agr Univ, Dept Entomol, Nanjing 210095, Jiangsu, Peoples R China.
   Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China.
   Univ Montpellier, IFREMER, CNRS, IHPE UMR 5244, Univ Perpignan Via Domitia, F-66860 Perpignan, France.
C2 UNIV CORNELL, USA
   UNIV NANJING, CHINA
   BEIJING ACAD AGR & FORESTRY SCI, CHINA
   UNIV MONTPELLIER, FRANCE
UM IHPE
IN DOAJ
IF 4.259
TC 15
UR https://archimer.ifremer.fr/doc/00317/42841/79517.pdf
   https://archimer.ifremer.fr/doc/00317/42841/79518.pdf
LA English
DT Article
AB Fitness costs associated with resistance to Bacillus thuringiensis (Bt) toxins critically impact the development of resistance in insect populations. In this study, the fitness costs in Trichoplusia ni strains associated with two genetically independent resistance mechanisms to Bt toxins Cry1Ac and Cry2Ab, individually and in combination, on four crop plants (cabbage, cotton, tobacco and tomato) were analyzed, in comparison with their near-isogenic susceptible strain. The net reproductive rate (R-0) and intrinsic rate of increase (r) of the T. ni strains, regardless of their resistance traits, were strongly affected by the host plants. The ABCC2 gene-linked mechanism of Cry1Ac resistance was associated with relatively low fitness costs, while the Cry2Ab resistance mechanism was associated with higher fitness costs. The fitness costs in the presence of both resistance mechanisms in T. ni appeared to be non-additive. The relative fitness of Bt-resistant T. ni depended on the specific resistance mechanisms as well as host plants. In addition to difference in survivorship and fecundity, an asynchrony of adult emergence was observed among T. ni with different resistance mechanisms and on different host plants. Therefore, mechanisms of resistance and host plants available in the field are both important factors affecting development of Bt resistance in insects. 
PY 2016
PD FEB
SO Scientific Reports
SN 2045-2322
PU Nature Publishing Group
VL 6
UT 000369937800001
DI 10.1038/srep20959
ID 42841
ER

EF