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Assessing the susceptibility of cruciferous lepidoptera to cry1ba2 and cry1ca4 for future transgenic cruciferous vegetables

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Title Assessing the susceptibility of cruciferous lepidoptera to cry1ba2 and cry1ca4 for future transgenic cruciferous vegetables
Not Available
 
Creator Shelton, A. M., Gu jar, G.T., Chen, M., Rauf, A. Srinivasan, R, Kalia, V. A. Mittal, ….…………… , Russell, D., Wu, Y., And Uijtewaal, B
 
Subject Plutella xylostella, diamondback moth, Bacillus thuringiensis, Cry toxins
 
Description Not Available
Advances in transgenic plants expressing Bacillus thuringiensis (Bt) insecticidal gene(s)
offer a promising alternative to traditional insecticides for control of lepidopteran pests on important
cruciferous vegetable crops such as cabbage and caulißower. A public-private partnership, the
Collaboration on Insect Management for Brassicas in Asia and Africa (CIMBAA), was formed in 2005
with the goal of developing dual-gene Bt caulißower and cabbage, initially for India, to replace the
use of broad spectrum, traditional insecticides. As a Þrst step in this effort, the major lepidopteran pests
of cruciferous vegetable crops [Plutella xylostella (L.), Pieris rapae (L.), Pieris brassicae (L.), Crocidolomia
binotalis (L.), Hellula undalis (F.), Diacrisia obliqua Walker, Spodoptera litura F., and
Helicoverpa armigera (Hu¨ bner)] were collected over a large geographic area (India, Indonesia,
Taiwan, China, Australia, and the United States) and tested against puriÞed Cry1Ba2 and Cry1Ca4
toxins, the toxins proposed to be expressed in the CIMBAA plants. Our results demonstrate that
Cry1Ba2 and Cry1Ca4 were effective against the primary target of the CIMBAA plants, P. xylostella,
regardless of geographic location, and had LC50 values 1.3 ppm. Furthermore, one or both toxins
were effective against the other major pest Lepidoptera, except for S. litura orH. armigera which were
less susceptible. No cross-resistance has been found between Cry1Ba2 and Cry1Ca4, suggesting
cry1Ba2 cry1Ca4 caulißower and cabbage could be an effective and sustainable tool to control, P.
xylostella, the key lepidopteran pest on cruciferous vegetable crops, as well as most other Lepidoptera.
As the CIMBAA plants are being developed, further tests are needed to determine whether they will
express these proteins at sufÞcient levels to control all the Lepidoptera. Sustainable use of the
dual-gene plants also is discussed.
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Date 2024-04-30T14:36:07Z
2024-04-30T14:36:07Z
2010-01-25
 
Type Research Paper
 
Identifier Shelton, A. M., Gujar, G.T., Chen, M., Rauf, A. Srinivasan, R, Kalia, V., A. Mittal, ….…………… , Russell, D., Wu, Y., and Uijtewaal, B (2009). Assessing the susceptibility of cruciferous lepidoptera to cry1ba2 and cry1ca4 for future transgenic cruciferous vegetables, J. Econ. Entomol. 102(6): 2217-2223
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/82459
 
Language English
 
Relation Not Available;
 
Publisher Elsevier