Knockdown of Helicoverpa armigera protease genes affects its growth and mortality via RNA interference.
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DOI: 10.1002/arch.21840
Abstract: Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), the cotton bollworm, is a destructive pest which is famous for its resistance to a variety of insecticides. RNA interference is a posttranscriptional gene silencing mechanism that has become a… read more here.
Keywords: helicoverpa armigera; rna interference; mortality; armigera ... See more keywords
Genetics, cross-resistance and synergism of indoxacarb resistance in Helicoverpa armigera (Lepidoptera: Noctuidae).
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DOI: 10.1002/ps.4334
Abstract: BACKGROUND The cotton bollworm Helicoverpa armigera is a global pest of field and horticultural crops and has developed resistance to insecticides from many chemical classes. Indoxacarb is an important option for selective control of H.… read more here.
Keywords: genetics; cross resistance; armigera; resistance ... See more keywords
Alternative splicing and expression analysis of HSF1 in diapause pupal brains in the cotton bollworm, Helicoverpa armigera.
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DOI: 10.1002/ps.5238
Abstract: BACKGROUND Diapause is the arrest of the development of insects and can be used for the development of effective agricultural pest management strategies. Heat shock protein 70 (Hsp70) is reported to be up-regulated during diapause… read more here.
Keywords: diapause pupal; analysis; armigera; expression ... See more keywords
Field-evolved resistance to eleven insecticides and the mechanisms involved in Helicoverpa armigera (Lepidoptera: Noctuidae).
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DOI: 10.1002/ps.6548
Abstract: BACKGROUND To understand the ongoing resistance of cotton bollworm, Helicoverpa armigera, the sensitivity of five field populations to commonly used insecticides, i.e. indoxacarb, abamectin, methoxyfenozide, chlorfenapyr, chlorantraniliprole, spinetoram, lambda-cyhalothrin, carbosulfan, metaflumizone, chlorpyrifos, and flufenoxuron, were… read more here.
Keywords: helicoverpa armigera; evolved resistance; field evolved; armigera ... See more keywords
Vip3Aa domain IV and V mutants confer higher insecticidal activity against Spodoptera frugiperda and Helicoverpa armigera.
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DOI: 10.1002/ps.6858
Abstract: BACKGROUND The fall armyworm Spodoptera frugiperda and cotton bollworm Helicoverpa armigera are major insect pests of corn and cotton worldwide. Genetically engineered crops producing Vip3Aa, a potent endotoxin, from the bacterium Bacillus thuringiensis (Bt) are… read more here.
Keywords: insecticidal activity; vip3aa; activity; armigera ... See more keywords
Helicoverpa armigera herbivory negatively impacts Aphis gossypii populations via inducible metabolic changes.
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DOI: 10.1002/ps.6865
Abstract: Helicoverpa armigera (H. armigera) and Aphis gossypii (A. gossypii) are two important insect species that feed on cotton plants. These insects have distinct abilities to induce plant resistance and tolerate plant toxins, which results in… read more here.
Keywords: gossypii; insects; plant resistance; armigera ... See more keywords
High temperature exposure reduces the susceptibility of Helicoverpa armigera to its nucleopolyhedrovirus (HearNPV) by enhancing expression of heat shock proteins.
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DOI: 10.1002/ps.6868
Abstract: BACKGROUND High temperatures will occur more frequently global warming, with potential impacts on the efficacy of biological control agents. Heat shock proteins (HSPs) are induced by high temperature, but their possible roles in pest resistance… read more here.
Keywords: hearnpv; high temperature; heat shock; temperature ... See more keywords
MicroRNAs miR-14 and miR-2766 regulate tyrosine hydroxylase to control larval-pupal metamorphosis in Helicoverpa armigera.
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DOI: 10.1002/ps.6997
Abstract: BACKGROUND The cotton bollworm, Helicoverpa armigera, is a worldwide polyphagous pest, causing huge economic losses in vegetable, cotton, corn, etc. Due to the long-term exposure to Bacillus thuringiensis (Bt) toxins, evolution of resistance by this… read more here.
Keywords: metamorphosis; mir 2766; armigera; mir ... See more keywords
Mutation of the clock gene timeless disturbs diapause induction and adult emergence rhythm in Helicoverpa armigera.
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DOI: 10.1002/ps.7363
Abstract: BACKGROUND Circadian rhythms are physical and behavioral changes that follow the 24-h cycle of Earth's light and temperature and are regulated by clock genes. Timeless (Tim) has been identified as a canonical clock gene in… read more here.
Keywords: adult; clock gene; armigera; diapause induction ... See more keywords
Transgenic pigeonpea events expressing Cry1Ac and Cry2Aa exhibit resistance to Helicoverpa armigera
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DOI: 10.1007/s00299-017-2133-0
Abstract: Key messageIndependent transgenic pigeonpea events were developed using two cry genes. Transgenic Cry2Aa-pigeonpea was established for the first time. Selected transgenic events demonstrated 100% mortality of Helicoverpa armigera in successive generations.AbstractLepidopteran insect Helicoverpa armigera is… read more here.
Keywords: pigeonpea events; pigeonpea; transgenic pigeonpea; armigera ... See more keywords
Field performance of the parasitoid wasp, Trichogrammatoidea armigera (Hymenoptera: Trichogrammatidae) following releases against the millet head miner, Heliocheilus albipunctella (Lepidoptera: Noctuidae) in the Sahel
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DOI: 10.1007/s10526-020-10015-0
Abstract: The effectiveness of the egg parasitoid Trichogrammatoidea armigera Nagaraja (Hymenoptera: Trichogrammatidae) in controlling Heliocheilus albipunctella de Joannis (Lepidoptera: Noctuidae), a major insect pest of pearl millet in the Sahel was assessed during two consecutive years… read more here.
Keywords: hymenoptera trichogrammatidae; armigera; heliocheilus albipunctella; lepidoptera noctuidae ... See more keywords