Effects of Bt cotton and Cry1Ac toxin on survival and development of pink bollworm (Lepidoptera: Gelechiidae)

Yong Biao Liu, Bruce E Tabashnik, Timothy J. Dennehy, Amanda L. Patin, Maria A. Sims, Susan K. Meyer, Yves Carriere

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

We evaluated the effects of Bacillus thuringiensis (Bt) toxin Cry1Ac on survival and development of a susceptible strain and laboratory-selected resistant strains of pink bollworm, Pectinophora gossypiella (Saunders). For susceptible and resistant strains tested on artificial diet, increases in Cry1Ac concentration reduced developmental rate and pupal weight. In greenhouse tests, survival of resistant larvae on transgenic cotton that produces Cry1Ac (Bt cotton) was 46% relative to their survival on non-Bt cotton. In contrast, Bt cotton killed all susceptible larvae tested. F1 hybrid progeny of resistant and susceptible adults did not survive on Bt cotton, which indicates recessive inheritance of resistance. Compared with resistant or susceptible larvae reared on non-Bt cotton, resistant larvae reared on Bt cotton had lower survival and slower development, and achieved lower pupal weight and fecundity. Recessive resistance to Bt cotton is consistent with one of the basic assumptions of the refuge strategy for delaying resistance to Bt cotton. Whereas slower development of resistant insects on Bt cotton could increase the probability of mating between resistant adults and accelerate resistance, negative effects of Bt cotton on the survival and development of resistant larvae could delay evolution of resistance.

Original languageEnglish (US)
Pages (from-to)1237-1242
Number of pages6
JournalJournal of Economic Entomology
Volume94
Issue number5
StatePublished - Oct 2001

Fingerprint

Pectinophora gossypiella
Gelechiidae
Bacillus thuringiensis
toxin
cotton
toxins
Lepidoptera
larva
larvae
effect
artificial diet
artificial diets
refuge
fecundity
inheritance (genetics)

Keywords

  • B. thuringiensis cotton
  • Bacillus thuringiensis
  • Cry1Ac
  • Pectinophora gossypiella
  • Resistance

ASJC Scopus subject areas

  • Insect Science

Cite this

Effects of Bt cotton and Cry1Ac toxin on survival and development of pink bollworm (Lepidoptera : Gelechiidae). / Liu, Yong Biao; Tabashnik, Bruce E; Dennehy, Timothy J.; Patin, Amanda L.; Sims, Maria A.; Meyer, Susan K.; Carriere, Yves.

In: Journal of Economic Entomology, Vol. 94, No. 5, 10.2001, p. 1237-1242.

Research output: Contribution to journalArticle

Liu, Yong Biao ; Tabashnik, Bruce E ; Dennehy, Timothy J. ; Patin, Amanda L. ; Sims, Maria A. ; Meyer, Susan K. ; Carriere, Yves. / Effects of Bt cotton and Cry1Ac toxin on survival and development of pink bollworm (Lepidoptera : Gelechiidae). In: Journal of Economic Entomology. 2001 ; Vol. 94, No. 5. pp. 1237-1242.
@article{e061dd45fcab44c185aa3346e51bab3b,
title = "Effects of Bt cotton and Cry1Ac toxin on survival and development of pink bollworm (Lepidoptera: Gelechiidae)",
abstract = "We evaluated the effects of Bacillus thuringiensis (Bt) toxin Cry1Ac on survival and development of a susceptible strain and laboratory-selected resistant strains of pink bollworm, Pectinophora gossypiella (Saunders). For susceptible and resistant strains tested on artificial diet, increases in Cry1Ac concentration reduced developmental rate and pupal weight. In greenhouse tests, survival of resistant larvae on transgenic cotton that produces Cry1Ac (Bt cotton) was 46{\%} relative to their survival on non-Bt cotton. In contrast, Bt cotton killed all susceptible larvae tested. F1 hybrid progeny of resistant and susceptible adults did not survive on Bt cotton, which indicates recessive inheritance of resistance. Compared with resistant or susceptible larvae reared on non-Bt cotton, resistant larvae reared on Bt cotton had lower survival and slower development, and achieved lower pupal weight and fecundity. Recessive resistance to Bt cotton is consistent with one of the basic assumptions of the refuge strategy for delaying resistance to Bt cotton. Whereas slower development of resistant insects on Bt cotton could increase the probability of mating between resistant adults and accelerate resistance, negative effects of Bt cotton on the survival and development of resistant larvae could delay evolution of resistance.",
keywords = "B. thuringiensis cotton, Bacillus thuringiensis, Cry1Ac, Pectinophora gossypiella, Resistance",
author = "Liu, {Yong Biao} and Tabashnik, {Bruce E} and Dennehy, {Timothy J.} and Patin, {Amanda L.} and Sims, {Maria A.} and Meyer, {Susan K.} and Yves Carriere",
year = "2001",
month = "10",
language = "English (US)",
volume = "94",
pages = "1237--1242",
journal = "Journal of Economic Entomology",
issn = "0022-0493",
publisher = "Entomological Society of America",
number = "5",

}

TY - JOUR

T1 - Effects of Bt cotton and Cry1Ac toxin on survival and development of pink bollworm (Lepidoptera

T2 - Gelechiidae)

AU - Liu, Yong Biao

AU - Tabashnik, Bruce E

AU - Dennehy, Timothy J.

AU - Patin, Amanda L.

AU - Sims, Maria A.

AU - Meyer, Susan K.

AU - Carriere, Yves

PY - 2001/10

Y1 - 2001/10

N2 - We evaluated the effects of Bacillus thuringiensis (Bt) toxin Cry1Ac on survival and development of a susceptible strain and laboratory-selected resistant strains of pink bollworm, Pectinophora gossypiella (Saunders). For susceptible and resistant strains tested on artificial diet, increases in Cry1Ac concentration reduced developmental rate and pupal weight. In greenhouse tests, survival of resistant larvae on transgenic cotton that produces Cry1Ac (Bt cotton) was 46% relative to their survival on non-Bt cotton. In contrast, Bt cotton killed all susceptible larvae tested. F1 hybrid progeny of resistant and susceptible adults did not survive on Bt cotton, which indicates recessive inheritance of resistance. Compared with resistant or susceptible larvae reared on non-Bt cotton, resistant larvae reared on Bt cotton had lower survival and slower development, and achieved lower pupal weight and fecundity. Recessive resistance to Bt cotton is consistent with one of the basic assumptions of the refuge strategy for delaying resistance to Bt cotton. Whereas slower development of resistant insects on Bt cotton could increase the probability of mating between resistant adults and accelerate resistance, negative effects of Bt cotton on the survival and development of resistant larvae could delay evolution of resistance.

AB - We evaluated the effects of Bacillus thuringiensis (Bt) toxin Cry1Ac on survival and development of a susceptible strain and laboratory-selected resistant strains of pink bollworm, Pectinophora gossypiella (Saunders). For susceptible and resistant strains tested on artificial diet, increases in Cry1Ac concentration reduced developmental rate and pupal weight. In greenhouse tests, survival of resistant larvae on transgenic cotton that produces Cry1Ac (Bt cotton) was 46% relative to their survival on non-Bt cotton. In contrast, Bt cotton killed all susceptible larvae tested. F1 hybrid progeny of resistant and susceptible adults did not survive on Bt cotton, which indicates recessive inheritance of resistance. Compared with resistant or susceptible larvae reared on non-Bt cotton, resistant larvae reared on Bt cotton had lower survival and slower development, and achieved lower pupal weight and fecundity. Recessive resistance to Bt cotton is consistent with one of the basic assumptions of the refuge strategy for delaying resistance to Bt cotton. Whereas slower development of resistant insects on Bt cotton could increase the probability of mating between resistant adults and accelerate resistance, negative effects of Bt cotton on the survival and development of resistant larvae could delay evolution of resistance.

KW - B. thuringiensis cotton

KW - Bacillus thuringiensis

KW - Cry1Ac

KW - Pectinophora gossypiella

KW - Resistance

UR - http://www.scopus.com/inward/record.url?scp=0035488838&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035488838&partnerID=8YFLogxK

M3 - Article

C2 - 11681689

AN - SCOPUS:0035488838

VL - 94

SP - 1237

EP - 1242

JO - Journal of Economic Entomology

JF - Journal of Economic Entomology

SN - 0022-0493

IS - 5

ER -