High levels of biological activity of <scp>Cry1Ac</scp> protein expressed on <scp>MON</scp> 87701 × <scp>MON</scp> 89788 soybean against <i>Heliothis virescens</i> (Lepidoptera:Noctuidae)

Bernardi, Oderlei; Dourado, Patrick M.; Carvalho, Rumão Batista Nunes de; Martinelli, Samuel; Berger, G.; Head, Graham P.; Omoto, Celso

doi:10.1002/ps.3581

Cited by 36 publications

(46 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yu et al (2013) found in bioassays that soybean plants that express the Cry1Ac protein are highly resistant to H. armigera because of the insect's sensitivity to this toxic protein. Bernardi et al (2014) also observed complete mortality in 1st-to 5th-instar larvae of Heliothis virescens after they were exposed to the Bt soybean, showing the efficacy of this technology for control of lepidopterans feeding on this soybean cultivar.…”

Section: Discussionmentioning

confidence: 73%

“…Because this species feeds on several crops (Gunning et al, 2005), there is some risk that populations in Brazil might develop resistance to Cry 1Ac because the protein is present in both Bt soybean and Bt cotton, and successive planting of these cultivars might extend the period of pest exposure to the protein and hence increase the possibility of selecting resistant individuals (Bernardi et al, 2014). Therefore, a high degree of control of H. armigera in Bt soybean and consequent reduction of damage from this pest will be necessary to maintain the effective refuge areas, aiming toward the sustainability of the technology.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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

Azambuja¹,

Degrande²,

Santos³

et al. 2015

JAS

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 99%

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

Azambuja¹,

Degrande²,

Santos³

et al. 2015

JAS

View full text Add to dashboard Cite

show abstract

“…Bernardi et al (2014) and Bortolotto et al (2014) assessed the larval biology of H. virescens in genetically modified soybean plants (Bt) and concluded that the pest is highly susceptible, thereby suffering larval mortality. The lower consumption indexes in this cultivar are due to the presence of toxins from Bacillus thuringiensis (Eubacteriales: Bacillaceae), which induce the formation of endotoxins (Waquil et al, 2002) poisonous to insects, especially lepidopterans.…”

Section: Discussionmentioning

confidence: 99%

“…This insect is a facultative migratory pest that can fly long distances in search of its host plants (Farrow and Daly, 1987). Inappropriate insecticide applications and their undesirable effects as well as the selection of individuals resistant not only to chemical insecticides but also to transgenic plants (Blanco et al, 2009;Sosa-Gomez and Silva, 2010;Bernardi et al, 2014;Bortolotto et al, 2014) lead to the need to investigate alternative pest control methods and strengthen integrated pest management (IPM) (Bueno et al, 2011a). Among the alternative methods, the exploitation of plant resistance to insects is considered ideal because this approach does not affect the environment, may be concomitantly used with other control methods, and does not require producers to deal with sophisticated technology (Smith, 2005;Seifi et al, 2013;Boiça Junior et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Attractiveness and non-preference of soybean cultivars to Heliothis virescens (Lepidoptera: Noctuidae) feeding

Almeida¹,

Silva²,

Almeida³

et al. 2017

Aust J Crop Sci

View full text Add to dashboard Cite

The tobacco budworm (Heliothis virescens) is a polyphagous species that damages soybean crops. In the search for sustainable pest control methods, the objective of this study was to evaluate H. virescens non-preference (antixenosis) of soybean cultivars by examining larval attraction and feeding responses to the nine cultivars. At 45 days after planting, the attraction and feeding tests were performed with third-instar larvae, and the number of larvae attracted to leaf disks, their leaf consumption, and an attractiveness index were determined in free-choice and no-choice tests. For the free-choice attractiveness test, arranged in a randomized block design with 10 replications were performed. For the no-choice attractiveness test, a completely randomized design with 20 replications was adopted. The cultivar NK 7059 RR was the most attractive and consumed, showing susceptibility to H. virescens. The cultivars IAC 100 and M 7110 IPRO (Bt) showed non-preference-type resistance These latter cultivars can be used by soybean producers or plant breeders as donors of resistance genes in plant improvement programs for resistance to H. virescens.

show abstract

“…This insecticidal protein has also been shown to be efficacious in controlling H. virescens larvae in soybean and cotton (Terán-Vargas, 2005;Bortolotto et al, 2014). In soybean, even in more developed plants (withseed pods), the concentration of the insecticidal protein is sufficient to control H. virescens larvae (Bernardi et al, 2013;Bortolotto et al, 2014) (Table 5).…”

Section: Seed Treatment In Cry1ac Soybeanmentioning

confidence: 99%

Potential of antranilic diamides applied in seeds of soybeans with and without cry1ac protein for Helicoverpa armigera caterpillar control

Suzana¹,

Dallagnol²,

Fortuna³

et al. 2017

Afr. J. Agric. Res.

View full text Add to dashboard Cite

In Brazil, the caterpillar Helicoverpa armigera (Hübner) is a key economic pest of soybean, from seedling emergence to the reproductive stage. Control of this pest has relied on foliar insecticide sprays, and the use of insect-resistant cultivars. Characterization of the efficacy of insecticides that can be used for seed treatment, as a complement or alternative control for this pest, is needed for the production sector. The study objective was to evaluate the insecticidal potential of diamides for control of H. armigera larvae, when applied to soybean seeds. The effects of seed treatment with cyantraniliprole or chlorantraniliprole on 1st-and 3rd-instar H. armigera larvae, in both conventional and in "Bt soybean" (Cry1Ac), were evaluated under laboratory conditions. Two infestations were carried out at 8, 13 and 21 days after plant emergence, to determine the leaf area consumed, and mortality of larvae. The insecticides cyantraniliprole and chlorantraniliprole, used at rate of 60 and 62.5 g a.i./100 kg seeds, respectively, have potential for the control of 1st-instar H. armigera larvae up until at 13 days after the emergence of soybeans plants. The Cry1Ac protein controlled both 1st-and 3rd-instar H. armigera larvae at least until 21 days after plants emergence.

show abstract

High levels of biological activity of Cry1Ac protein expressed on MON 87701 × MON 89788 soybean against Heliothis virescens (Lepidoptera:Noctuidae)

Abstract: The MON 87701 × MON 89788 soybean provides an effective alternative in controlling Heliothis virescens and complies with the concept of high-dose for IRM programs.

Cited by 36 publications

References 28 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)

Attractiveness and non-preference of soybean cultivars to Heliothis virescens (Lepidoptera: Noctuidae) feeding

Potential of antranilic diamides applied in seeds of soybeans with and without cry1ac protein for Helicoverpa armigera caterpillar control

Contact Info

Product

Resources

About