Susceptibility to Bt proteins is not required for Agrotis ipsilon aversion to Bt maize

Binning, Rachel Renee; Coats, Joel R.; Kong, Xiaoxiao; Hellmich, Richard L.

doi:10.1002/ps.3901

Cited by 19 publications

(12 citation statements)

References 23 publications

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“…Moreover, this insect pest can complete its development on hosts from several plant families in agroecosystems . Agrotis ipsilon is an early season pest of corn; its larvae usually drill deep into the soil or thatch and surface at night to injure corn by cutting off seedlings or tunneling into the bases of older plants and destroying their growing points . Presently, with the extensive popularization and application of corn precision planting technology (i.e., one seed per hole) in China, each corn seeding is critical to the yield.…”

Section: Introductionmentioning

confidence: 99%

Cyantraniliprole seed treatment efficiency against Agrotis ipsilon (Lepidoptera: Noctuidae) and residue concentrations in corn plants and soil

Zhang

Ding

et al. 2019

Pest Management Science

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BACKGROUND: The black cutworm Agrotis ipsilon is the most destructive early season insect pest of corn. In this study, the control efficiency of cyantraniliprole seed treatment against A. ipsilon was evaluated, and the residual concentrations of cyantraniliprole and its metabolite J9Z38 in the stalks of corn seedlings and soil were investigated. RESULTS:Plant pot experiments showed that A. ipsilon larval mortality was greater than 92% and that the percentage of corn seedlings damaged by A. ipsilon was less than 24% when corn seeds were treated with cyantraniliprole at 2 and 4 g AI kg −1 seed. Cyantraniliprole seed treatment at a dosage of 2 g AI kg −1 seed significantly reduced A. ipsilon infestation compared to chlorantraniliprole and clothianidin seed treatments in corn fields. Cyantraniliprole seed treatment resulted in more persistent control efficiency of A. ipsilon in spring than in summer. Cyantraniliprole and J9Z38 residues in corn stalks and soil degraded more slowly in the spring than in the summer. CONCLUSION: Cyantraniliprole used as a seed treatment can protect corn plants from A. ipsilon infestations throughout the seedling stage. The high biological activity of cyantraniliprole was consistent with the residue levels of cyantraniliprole in the corn stalks and soil. Residual toxicity determination for A. ipsilonResidual toxicity was estimated using the stem bases of the cyantraniliprole-treated corn plants (the seeds treated with cyantraniliprole at a dosage of 2 g AI kg −1 seed were sown at the same time in field experiments in 2016) collected at 1, 3, 5, 7, 10, 14, 21, 28 and 35 days after seedling emergence in the spring and summer of 2016. Newly molted and active third-, fourth-, fifth-or sixth-instar larvae (within 12 h of molting) were placed into 12-well tissue culture plates and starved for 4-5 h

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Section: Introductionmentioning

confidence: 99%

Cyantraniliprole seed treatment efficiency against Agrotis ipsilon (Lepidoptera: Noctuidae) and residue concentrations in corn plants and soil

Zhang

Ding

et al. 2019

Pest Management Science

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“…The black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae) is a polyphagous pest that occurs worldwide and can destroy more than one hundred types of crops [ 1 ]. A .…”

Section: Introductionmentioning

confidence: 99%

Effects of Sublethal Concentrations of Cyantraniliprole on the Development, Fecundity and Nutritional Physiology of the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae)

Zhang

Cui

et al. 2016

PLoS ONE

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To better understand the sublethal effects of cyantraniliprole on the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae), several studies were carried out to investigate sublethal effects on development stages, population parameters, feeding indices and nutrient content of A. ipsilon. The result of a bioassay showed that cyantraniliprole had high toxicity against A. ipsilon fourth-instar larvae with an LC50 of 0.354 μg.g−1 using an artificial diet. Compared with controls, sublethal doses of cyantraniliprole at LC5, LC20 and LC40 levels prolonged larval and pupal duration and extended mean generation time and total preovipositional period. In addition, survival rate, reproductive value, intrinsic and finite rates of increase and net reproduction rate declined significantly. Meanwhile, cyantraniliprole had markedly antifeedant effects; decreased the relative growth rate (RGR), the relative consumption rate (RCR), the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD); and increased the approximate digestibility (AD) significantly. This phenomenon contributed to the decrease of nutrient contents, including lipids, protein and carbohydrates, to the point that insufficient energy was available for normal growth. Therefore, sublethal concentrations of cyantraniliprole decreased growth speed and reduced population reproduction of A. ipsilon. This result provides information useful in integrated pest management (IPM) programs for A. ipsilon.

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“…A. ipsilon causes severe crop damages in infested plant fields varies from 20-80% due to its various host range, hidden lifestyle, feeding behavior, prolonged egg-laying, and its ability for long-distance migration. More than 80% of the losses occur after reaching the fourth instar of larvae, which cuts several plants overnight (Binning et al, 2015, Liu et al, 2015. It is difficult to detect, especially late larval stages that stay within the soil.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Efficacy of Certain Spray-Dried Baculovirus (AgipMNPV) against Cutworm, Agrotis ipsilon Hufnagel (Lepidoptera: Noctuidae)

Sayed

Behle

El-Masry

2020

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The insecticidal efficacy of various baculovirus formulations against the cutworm Agrotis ipsilon was determined. The treatments consisted of molasses from suagrcane mixing with each of wheat germ, biochar, talc, chitosan, silica gel, pyrolysis bio-oilaqueous phase, pyrolysis bio-oilorganic phase, calcium carbonate, cornflour, calcium cassinate, aluminium potasium sulphate, Diatomaceous earth, dextrin, lignin PC 1307, soy screen, blankphor, skim milk powder, potassium cassinate, magnsium chloride, date molasses and pregelatinized starch. All applied in spray-dried at 2.2 x 10 9 occlusion body(OB) mL-1. The bioassay of each spray-dried formulation using the droplet feeding method by the blue solution containing 2% sugar and 0.1% blue dye. The resulting suspensions should all contain 0.377 x 10 6 OB mL-1 , represent the LD 70 for the unformulated virus. Exposure newly hatched larvae of cutworms and transfer to individual diet cups for each treatment and incubated at 28 o C in dark incubator for 7 days. The obtained results revealed that satisfactory control of the pest of 100% larval mortality compared to untreated control was achieved with the formulations containing molasses mixing with talc, silica gel, calcium carbonate, cornflour, calcium cassinate, diatomaceous earch, soy screen, and dextrin. However, the formulations containing chitosan, pyrolysis bio-oilaqueous phase and pyrolysis biooilorganic phase gave the lowest mortalities as 12.2, 11.1 and 6.7%, respectively. These findings is an attempt to provides an interesting alternative developed biopesticide formulations made with natural ingredients that could improve the efficacy and persistence of virus-based biopesticides.

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Susceptibility to Bt proteins is not required for Agrotis ipsilon aversion to Bt maize

Cited by 19 publications

References 23 publications

Cyantraniliprole seed treatment efficiency against Agrotis ipsilon (Lepidoptera: Noctuidae) and residue concentrations in corn plants and soil

Cyantraniliprole seed treatment efficiency against Agrotis ipsilon (Lepidoptera: Noctuidae) and residue concentrations in corn plants and soil

Effects of Sublethal Concentrations of Cyantraniliprole on the Development, Fecundity and Nutritional Physiology of the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae)

Enhancing the Efficacy of Certain Spray-Dried Baculovirus (AgipMNPV) against Cutworm, Agrotis ipsilon Hufnagel (Lepidoptera: Noctuidae)

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