Resistance of Cotton Lines Containing a Bacillus thuringiensis Toxin to Pink Bollworm (Lepidoptera: Gelechiidae) and other Insects

Wilson, Douglas F.; Flint, H. M.; Deaton, Randy W.; Fischhoff, David A.; Perlak, Frederick J.; Armstrong, Toni A.; Fuchs, Roy L.; Berberich, Sharon A.; Parks, N. J.; Stapp, Benny R.

doi:10.1093/jee/85.4.1516

Cited by 138 publications

(50 citation statements)

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“…Contrasting effects of Bt toxin on herbivorous insects, such as pink bollworm and tobacco budworm, have been reported [35,36]. Chen et al [37] reported that the population-trend index of cotton bollworm decreased significantly when fed on Bt cotton, compared with the non-Bt cotton fed control.…”

Section: Discussionmentioning

confidence: 99%

Temporal allocation of metabolic tolerance to transgenic Bt cotton in beet armyworm, Spodoptera exigua (Hübner)

Guo

Wan

2011

Sci. China Life Sci.

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Digestive and detoxification enzyme activity and nutrient composition were examined in the body of fourth instar beet armyworms, Spodoptera exigua (Hübner), fed on transgenic Bacillus thuringiensis (Bt) and non-Bt cotton for different time periods. Nutrient composition and specific enzyme activities differed significantly between the S. exigua fed Bt vs. non-Bt cotton. At 1, 6 and 24 h, free fatty acid and glucose levels were significantly lower in S. exigua fed on Bt cotton than those fed on non-Bt cotton. S. exigua fed on Bt cotton had significantly higher trypsin and total superoxide dismutase (T-SOD) activities and significantly lower lipase, carboxylesterase and acetylcholinesterase activities than non-Bt fed worms for all feeding time periods. Differences were also observed among feeding times within each cotton variety group. Significantly lower free fatty acid and total amino acid were observed in S. exigua fed on Bt cotton for 24 h than in those fed for 1 h. Significantly lower activities of lipase and trypsin were detected in S. exigua fed on Bt cotton for 24 h than those for 1 and 4 h. However, carboxylesterase and acetylcholinesterase activities in S. exigua fed on Bt cotton for 24 h were significantly higher than those for 1, 4 and 6 h. The interaction between cotton variety and feeding time significantly affected the activities of lipase, trypsin, acetylcholinesterase and T-SOD enzymes in S. exigua. Measuring the temporal allocation of protection and detoxification enzyme activities in the body of S. exigua in response to B. thuringiensis can provide a meaningful evaluation on the metabolic tolerance of herbivorous insects under the continuous selection pressure of a toxic protein.

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Section: Discussionmentioning

confidence: 99%

Temporal allocation of metabolic tolerance to transgenic Bt cotton in beet armyworm, Spodoptera exigua (Hübner)

Guo

Wan

2011

Sci. China Life Sci.

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“…Several field tests of Bt transgenic cotton indicated a high degree of efficacy against lepidopterous insect pests (Wilson et al 1992, Mahaffey et al 1994, and Benedict et al 1996. In particular, Bt cotton provided an exceptionally high level of season-long control of pink bollworm (Flint et al 1995, Watson 1995, and Flint and Parks 1999.…”

Section: Bt Transgenic Cotton -mentioning

confidence: 99%

A Review of U.S. and Mexican Cooperation to Develop Insect Resistance Management and Monitoring Methods for Surveying Transgenic Crops ExpressingBacillus thuringiensisProteins: 2003 to 2010

Tamez‐Guerra

2010

Southwestern Entomologist

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An area-wide pink bollworm eradication program, involving growers and state and federal cooperators, has been proposed by the National Cotton Council's Pink Bollworm Action Committee. The program's objective is to eradicate the pink bollworm (PBW) from the infested areas of the U.S., essentially the southwestern portion of the Cotton Belt.Through the coordinated efforts of cotton producer communities, and federal, state, and local entities in the U.S. and Mexico, the plan is to implement the eradication program in three phases. The operational elements of the program include: 1) mapping to identify cotton field locations, acreage, and genotypes; 2) detection by trapping and visual inspection; and 3) control using cultural practices, mating disruption with pheromone, Bt transgenic cotton, sterile moth releases, and minimal insecticide applications.This report provides a summary of the strategic plan and the operational aspects of the PBW eradication program.

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“…Although Bt crops have been very successful, studies have shown that insects can develop field-evolved resistance to specific Bt crops, particularly in those carrying a single Bt gene (Wilson et al 1992). As such, it is possible that Maruca could eventually develop resistance to the Cry 1Ab protein.…”

mentioning

confidence: 99%

Transgenic cowpeas (Vigna unguiculata L. Walp) expressing Bacillus thuringiensis Vip3Ba protein are protected against the Maruca pod borer (Maruca vitrata)

Bett

Gollasch

Moore

et al. 2017

Plant Cell Tiss Organ Cult

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A vip3Ba gene reconstructed for plant expression was used in transforming cowpea via Agrobacterium tumefaciens. Transgenic lines expressing Vip3Ba protein were used in insect feeding trials to assess protection against Maruca and were found to be completely protected from this pest. We propose that the vip-cowpea lines could be combined with existing cry-transgenic cowpea to introgress this additional resistance trait and thus avoid or greatly delay the development of resistance in Maruca.

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Resistance of Cotton Lines Containing a Bacillus thuringiensis Toxin to Pink Bollworm (Lepidoptera: Gelechiidae) and other Insects

Cited by 138 publications

References 0 publications

Temporal allocation of metabolic tolerance to transgenic Bt cotton in beet armyworm, Spodoptera exigua (Hübner)

Temporal allocation of metabolic tolerance to transgenic Bt cotton in beet armyworm, Spodoptera exigua (Hübner)

A Review of U.S. and Mexican Cooperation to Develop Insect Resistance Management and Monitoring Methods for Surveying Transgenic Crops ExpressingBacillus thuringiensisProteins: 2003 to 2010

Transgenic cowpeas (Vigna unguiculata L. Walp) expressing Bacillus thuringiensis Vip3Ba protein are protected against the Maruca pod borer (Maruca vitrata)

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