Inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) from India

Kaur, Paramjit; Dilawari, V. K.

doi:10.1002/ps.2185

Cited by 20 publications

(22 citation statements)

References 49 publications

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“…Kaur and Dilawari (2011), under laboratory conditions, showed that the resistance of Helicoverpa armigera to Cry1Ac was autosomal, partially recessive and polygenic. Similar conclusions were obtained for populations of Plutella xylostella (Sayyed et al, 2000), Heliothis virescens , and Pectinophora gossypiella (Kaur and Dilawari, 2011).…”

Section: Sustainability Of Biocontrol Agent Efficacymentioning

confidence: 99%

Resistance to bio-insecticides or how to enhance their sustainability: a review

Siegwart

Graillot

Lopez³

et al. 2015

Front. Plant Sci.

151

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After more than 70 years of chemical pesticide use, modern agriculture is increasingly using biological control products. Resistances to conventional insecticides are wide spread, while those to bio-insecticides have raised less attention, and resistance management is frequently neglected. However, a good knowledge of the limitations of a new technique often provides greater sustainability. In this review, we compile cases of resistance to widely used bio-insecticides and describe the associated resistance mechanisms. This overview shows that all widely used bio-insecticides ultimately select resistant individuals. For example, at least 27 species of insects have been described as resistant to Bacillus thuringiensis toxins. The resistance mechanisms are at least as diverse as those that are involved in resistance to chemical insecticides, some of them being common to bio-insecticides and chemical insecticides. This analysis highlights the specific properties of bio-insecticides that the scientific community should use to provide a better sustainability of these products.

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Section: Sustainability Of Biocontrol Agent Efficacymentioning

confidence: 99%

Resistance to bio-insecticides or how to enhance their sustainability: a review

Siegwart

Graillot

Lopez³

et al. 2015

Front. Plant Sci.

151

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“…The results suggest that the increased resistance (72-fold compared to susceptible strain) 11 to Cry1Ac in laboratory-selected resistant strain (BM-R) differs when exposed to Bt-cotton leaves. Tests on cotton leaves using progeny of BM-R strain continuously selected for 19 generations on diet-incorporated Cry1Ac (MVP-II) showed only 0.15% survival.…”

mentioning

confidence: 91%

“…These studies indicate the potential of these insects to develop resistance to Bt-toxins. Laboratory experiments for resistance study in India have shown tolerance in H. armigera under laboratory conditions [10][11][12][13] . In Mississippi and Arkansas, USA, Bt-resistance in bollworm, Helicoverpa zea on Bt-cotton has been reported 14 .…”

mentioning

confidence: 99%

“…In order to determine the assumptions of refuge strategy and to manage resistance in the field, we have examined resistance to Cry1Ac in laboratory-selected strains of H. armigera. Based on previous studies, resistance was inferred to be polygenic, autosomal and inherited as a recessive trait in laboratory-raised resistant strains 11 . In the present study, we report behaviour, survival and corrected food intake of laboratory-selected Cry1Ac-resistant strain on artificial diet containing Cry1Ac toxin, Bt-cotton and non-Bt-cotton.…”

mentioning

confidence: 99%

“…Larvae were reared at 27  2C and 75  5% relative humidity on semi-synthetic diet. The ingredients and protocol of semisynthetic diet are available in the literature 11 . The pupae obtained from the collected larvae were kept singly in polycarbonate vials and allowed to become adults.…”

mentioning

confidence: 99%

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Behaviour of Laboratory-Selected Cry1Ac-Tolerant Strain of Helicoverpa armigera (Hubner) (Lepidoptera:Noctuidae) on Bt-Cotton

Kaur¹,

Dilawari²

2017

Current Science

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The effect of Bacillus thuringiensis toxin Cry1Ac on the behaviour of a laboratory-selected resistant population (72-fold) of Helicoverpa armigera on Bt-cotton was evaluated. Compared with non-Bt-cotton and Cry1Ac toxin incorporated in semi-synthetic diet, resistant larvae reared on Bt-cotton had only 0.13% survival and slower development. The results suggest that Cry1Ac from Bt-cotton exerts a greater toxic effect in terms of larval mortality coupled with decline in larval growth rate compared to semi-synthetic diet.

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Selection and characterization of resistance to the Vip3Aa20 protein from Bacillus thuringiensis in Spodoptera frugiperda

Bernardi

Horikoshi

et al. 2016

Pest Management Science

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Inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) from India

Abstract: Based on dominance, degree of dominance and backcross values, resistance was inferred to be polygenic, autosomal and inherited as a recessive trait.

Cited by 20 publications

References 49 publications

Resistance to bio-insecticides or how to enhance their sustainability: a review

Resistance to bio-insecticides or how to enhance their sustainability: a review

Behaviour of Laboratory-Selected Cry1Ac-Tolerant Strain of <i>Helicoverpa armigera</i> (Hubner) (Lepidoptera:Noctuidae) on Bt-Cotton

Selection and characterization of resistance to the Vip3Aa20 protein from Bacillus thuringiensis in Spodoptera frugiperda

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