Assessment of the high‐dose concept and level of control provided by MON 87701 × MON 89788 soybean against Anticarsia gemmatalis and Pseudoplusia includens (Lepidoptera: Noctuidae) in Brazil

Bernardi, Oderlei; Malvestiti, Glaucia Sossai; Dourado, Patrick M.; Oliveira, Wladecir Salles de; Martinelli, Samuel; Berger, G.; Head, Graham P.; Omoto, Celso

doi:10.1002/ps.3271

Cited by 132 publications

(132 citation statements)

References 30 publications

(42 reference statements)

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“…For neonate larvae, 100% mortality, which in this study occurred four days after the infestation, was also observed in Anticarsia gemmatalis and Chrysodeixis includens, in bioassays with leaf disks of Bt soybean MON 87701 × MON 89788 (Bernardi et al, 2012).…”

Section: Discussionsupporting

confidence: 64%

“…On the other hand, H. armigera is not listed as a target pest for this technology in Brazil, since the pest was introduced into the country only after the Brazilian government agencies had authorized the commercial sales of first generation of Bt soybean (Intacta proteins. Bernardi et al (2012) reported that advanced instars are presumably more tolerant to Bt proteins, and thus larval mortality in these instars indicates that a species is highly susceptible to these toxins. In general, the more advanced the instar, the greater the difficulty of controlling it, for the larvae must ingest a larger amount of tissue to cause lethality, with consequent damage to the plant.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Azambuja¹,

Degrande²,

Santos³

et al. 2015

JAS

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Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) causes economically significant damage to soybeans Glycine max (L.) Merrill (Fabaceae: Phaseoleae). The genetically modified soybean expressing the Cry1Ac protein of Bacillus thuringiensis Berliner, which is toxic to lepidopterans, is a potential alternative tool to manage this pest. Bioassays with H. armigera larval instars were conducted with Bt (Cry1Ac) and non-Bt soybean plants in order to evaluate the efficacy of control with the modified cultivar. Bt soybean affected the mean time of mortality in each larval instar, but its efficacy was not affected by the larval stage. Mortality was 100% in all six instars, indicating that the Bt soybean expressing the Cry 1Ac protein is an efficient control tactic for this pest.

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Section: Discussionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Azambuja¹,

Degrande²,

Santos³

et al. 2015

JAS

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“…Recentemente, houve a aprovação da soja transgênica que expressa a proteína Cry1Ac e tem tolerância ao glifosato, resultado de melhoramento clássico dos eventos MON 87701 × MON 89788, cujo cultivo comercial foi realizado no ano agrícola 2013/2014. Este evento é efetivo principalmente para as espécies A. gemmatalis e C. includens (Bernardi et al, 2012).…”

Section: Introductionunclassified

Interação de proteínas Cry1 e Vip3A de Bacillus thuringiensis para controle de lepidópteros-praga

Crialesi-Legori

Davolos

Lemes

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a suscetibilidade das lagartas Anticarsia gemmatalis (Lepidoptera: Erebidae) e Chrysodeixis includens (Lepidoptera: Noctuidae) às proteínas Cry1 e Vip3A, bem como determinar se há a interação entre essas proteínas no controle das duas espécies. Bioensaios com as proteínas isoladas e em combinações foram realizados, e as concentrações letais CL 50 e CL 90 foram estimadas para cada condição. As proteínas Cry1Aa, Cry1Ac e Vip3Af foram as mais efetivas no controle de A. gemmatalis, enquanto Cry1Ac, Vip3Aa e Vip3Af foram mais efetivas no de C. includens. As proteínas Cry1Ac e Cry1Ca causaram maior inibição do desenvolvimento das larvas sobreviventes à CL 50 , em ambas as espécies. Combinações entre Vip3A e Cry1 apresentam efeito sinérgico no controle das espécies e a combinação Vip3Aa+Cry1Ea destaca-se no controle de A. gemmatalis e C. includens. Essas proteínas combinadas são promissoras na construção de plantas piramidadas, para o controle simultâneo das pragas.Termos para indexação: Anticarsia gemmatalis, Chrysodeixis includens, manejo da resistência, piramidação de genes, sinergismo, soja transgênica. Interaction of Cry1 and Vip3A proteins of Bacillus thuringiensis for the control of lepidopteran insect pestsAbstract -The objective of this work was to evaluate the susceptibility of Anticarsia gemmatalis (Lepidoptera: Erebidae) and Chrysodeixis includens (Lepidoptera: Noctuidae) caterpillars to Cry1 and Vip3A proteins, as well as to determine if there is any interaction between these proteins on the control of the two species. Bioassays with both isolated and combined proteins were carried out, and lethal concentrations LC 50 and LC 90 were estimated for each condition. Cry1Aa, Cry1Ac, and Vip3Af were the more effective proteins for the control of A. gemmatalis, while Cry1Ac, Vip3Aa, and Vip3Af were more effective for the control of C. includens. Cry1Ac and Cry1Ca proteins caused the highest inhibition to the development of larvae that survived the LC 50 dose in both species. Different combinations of Vip3A and Cry1 have synergistic effect in the control of both species, and the combination Vip3Aa + Cry1Ea showed an outstanding control of A. gemmatalis and C. includens. These proteins are promising for building pyramided plants for the simultaneous control of the pests.

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“…Crops such as soybeans and beans have suffered from constant population outbreaks of Chrysodeixis includens (Walker, 1857) (Lepidoptera: Noctuidae) [1] [2], known as soybean looper [3], with great defoliator potential [4] of polyphagous habit [5].…”

Section: Introductionmentioning

confidence: 99%

“…The use of chemicals and transgenic plants is a major control measure employed in the management of C. includens [1] [2]. Among the commonly used insecticides, there is an obstacle due to two aspects: resistant, and the lack of knowledge about the lethal and sublethal effects of insecticides on the pest [6] [7].…”

Section: Introductionmentioning

confidence: 99%

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the Chrysodeixis includens?

Rodrigues¹,

Silva²,

Rodrigues³

et al. 2018

AJPS

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The objective was to determine lethal concentrations and to evaluate the effects of sublethal doses of insecticides on Chrysodeixis includens under laboratory conditions. The standard population of C. includens was kept on artificial diet under controlled conditions (25˚C ± 5˚C, 60% ± 10 RU, 12:12 h). The active principles used were B. thuringiensis, Indoxacarb and Teflubenzuron.The CL 25 and LC 50 obtained from dose response curve (estimated from eight concentrations of each active principle) were diluted in water and applied to the back of third instar caterpillars and compared to the control (water). The insecticides used showed lethal and sublethal effects in C. includens. Bacillus thuringiensis was 6.21 and 2.79 times more toxic to soybean looper when compared to the products Indoxacarb and Teflubenzuron, respectively. Insecticides applied to the caterpillars reduced survival and affected the biomass gain with increased larvae and pupae longevity, with a significant reduction in fertility (40%) and fecundity (94.97%) in adults. In the present study it was observed that both survival and larval biomass gain have a direct effect on fecundity and fertility, respectively. Therefore the active ingredients Indoxacarb, Teflubenzuron and B. thuringiensis can be used in rotation as a tool in the C. includens.

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Assessment of the high‐dose concept and level of control provided by MON 87701 × MON 89788 soybean against Anticarsia gemmatalis and Pseudoplusia includens (Lepidoptera: Noctuidae) in Brazil

Abstract: The MON 87701 × MON 89788 soybean provides a high level of control against A. gemmatalis and P. includes, but a high-dose event only to A. gemmatalis.

Cited by 132 publications

References 30 publications

Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Interação de proteínas Cry1 e Vip3A de Bacillus thuringiensis para controle de lepidópteros-praga

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the <i>Chrysodeixis includens</i>?

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Assessment of the high‐dose concept and level of control provided by MON 87701 × MON 89788 soybean against Anticarsia gemmatalis and Pseudoplusia includens (Lepidoptera: Noctuidae) in Brazil

Abstract: The MON 87701 × MON 89788 soybean provides a high level of control against A. gemmatalis and P. includes, but a high-dose event only to A. gemmatalis.

Cited by 132 publications

References 30 publications

Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Effect of Bt Soybean on Larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Interação de proteínas Cry1 e Vip3A de Bacillus thuringiensis para controle de lepidópteros-praga

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the &lt;i&gt;Chrysodeixis includens&lt;/i&gt;?

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Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the <i>Chrysodeixis includens</i>?