Les études confirment l’ingestion d

Les études confirment l’ingestion de la toxine par les larves de la chrysope verte, lorsqu’elle se nourrit de deux espèces citées. Les bio-essais menés sur les proies de la chrysope verte, en vue d’évaluer la toxicité de Cry1Ab, ont montré que la toxine demeure biologiquement active après ingestion du maïs Bt, sans subir de modification. Enfin, la chrysope verte nourrie de proies ayant consommé du maïs Bt, enregistre une mortalité immature élevée.
Remarque : la protéine Cry1Ab est considérée comme toxique, uniquement pour les lépidoptères (Lepidoptera), alors que la chrysope verte appartient à l’ordre des névroptères (Neuroptera).
• Sensibilité à un puceron
Le maïs Bt est plus sensible à un type de puceron (aphide) que le maïs conventionnel, en raison d’une altération des composants chimiques de sa sève.
• Organismes du sol
De nombreuses cultures Bt sécrètent leur toxine de la racine vers le sol. Des études menées in vitro et in situ, indiquent que la toxine Bt s’accumule dans le sol, se lie rapidement à des particules tensio-actives (argile, substances humiques) et conserve une activité insecticide pendant au moins 180 j (12).
Par ailleurs, l’utilisation d’herbicides sur les cultures de soja OGM conduit à la diminution de la quantité de bactéries du sol bénéfiques comme le Bradyrhizobium japonicum.

Kết quả (Anh) 1:

Studies confirm the ingestion of the toxin by the Green Lacewing larvae, when it feeds on two species cited. Bio-tests conducted on prey of the golden-eyed Lacewing green, to assess the toxicity of Cry1Ab, showed that the toxin remains biologically active after ingestion of the Bt corn, without modification. Finally,. the Green Lacewing fed prey having eaten Bt corn, saves an immature mortality.
Note: Cry1Ab protein is considered to be toxic only to Lepidoptera (Lepidoptera), while the Green Lacewing belongs to the order neuroptera (Neuroptera).
• Sensitivity to an aphid
.Bt corn is more susceptible to a type of aphid (aphid) as conventional maize, due to an alteration of the chemical components of its SAP.
• soil organisms
many cultures Bt secrete their Toxin from the roots to the soil. Studies in vitro and in situ, indicate that the Bt toxin accumulates in the soil, binds rapidly to surface-active particles (clay, humic substances) and retains an insecticidal activity for at least 180 days (12)
on the other hand, the use of herbicides on crops of GM soya leads to the decrease in the amount of beneficial soil bacteria such as Bradyrhizobium japonicum.

Kết quả (Anh) 2:

Studies confirm the ingestion of the toxin by larvae of the green lacewing, when feeds two species mentioned. Bioassays conducted on prey green lacewing, to assess the toxicity of Cry1Ab showed that the toxin remains biologically active after ingestion of Bt corn, without undergoing change. Finally, the green lacewing fed on prey that consumed Bt corn, recorded a high immature mortality.
Note: The Cry1Ab protein is considered toxic only to lepidopteran insects (Lepidoptera), while the green lacewing belongs to the order Neuroptera (Neuroptera).
• Sensitivity to aphid
Bt corn is more susceptible to a type of aphid (aphid) than conventional maize, due to an alteration of the chemical components of sap.
• Soil Organisms
Many Bt crops secrete toxin their root to the soil. Studies in vitro and in situ, indicate that Bt toxin accumulates in the soil rapidly binds to surface-active particles (clay, humic substances) and retains insecticidal activity for at least 180 days (12).
Furthermore, the use of herbicides on GM soy leads to decrease of the amount of beneficial soil bacteria such as Bradyrhizobium japonicum.

Kết quả (Anh) 3:

The studies confirm the ingestion of the toxin by the larvae of the chrysope green, when it feeds on two species listed. The bio-tests conducted on the prey of the chrysope green, in order to evaluate the toxicity of Cry1Ab, have shown that the toxin remains biologically active after ingestion of Bt corn, without alteration. Finally,The chrysope green nourished of prey having consumed of Bt corn, recorded a immature mortality high.
Note: the protein Cry1Ab is considered toxic, only for the lepidoptera (Lepidoptera), whereas the chrysope green belongs to the order of nevropteres (Neuroptera).
• Sensitivity to a greenfly
The Bt corn is more sensitive to a type of aphids (aphide) than conventional maize, due to a corruption of the chemical components of its sap.
• soil organisms
many Bt crops secrete their toxin of the root to the ground. The studies carried out in vitro and in situ, indicate that the Bt toxin accumulates in the soil, rapidly binds to particles of tenside (clay,Humic substances) and retains an activity insecticide during at least 180 j (12) .
elsewhere, the use of herbicides on soybean crops GMOS led to a decrease in the quantity of soil bacteria beneficial as the Bradyrhizobium japonicum.