A new generation of Bt maize for control of fall armyworm (Spodoptera frugiperda).

ABSTRACT:

Background

The pyramided genetically modified maize (Zea mays [L.]) event MON 95379, expressing the Cry1B.868 and Cry1Da_7 proteins, was designed to protect against larval feeding damage by the fall armyworm, Spodoptera frugiperda (FAW). Here, we conducted laboratory, greenhouse, and field studies to assess the dose and field efficacy of MON 95379 against FAW and inform the development of insect resistance management plans.

Results

The Cry1B.868 and Cry1Da_7 proteins were active against susceptible FAW neonates in diet-incorporation bioassays: median lethal concentration [LC₅₀ ] (95% CI) = 62.8 (42.6-87.6) μg/ml diet for Cry1B.868 and 9.4 (5.3-18.6) μg/ml diet for Cry1Da_7. In laboratory leaf disc bioassays, MON 95379 maize and experimental maize lines expressing

SUBMITTER: Horikoshi RJ 

PROVIDER: S-EPMC8360028 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature