Mismatch between lab-generated and field-evolved resistance to transgenic Bt crops in <i>Helicoverpa zea</i>.

ABSTRACT: Transgenic crops producing crystalline (Cry) proteins from the bacterium Bacillus thuringiensis (Bt) have been used extensively to control some major crop pests. However, many populations of the noctuid moth Helicoverpa zea, one of the most important crop pests in the United States, have evolved practical resistance to several Cry proteins including Cry1Ac. Although mutations in single genes that confer resistance to Cry proteins have been identified in lab-selected and gene-edited strains of H. zea and other lepidopteran pests, the genetic basis of field-evolved resistance to Cry proteins in H. zea has remained elusive. We used a genomic approach to analyze the genetic basis of field-evolved resistance to Cry1Ac in 937 H. zea derived from 17 sites in sev

SUBMITTER: Legan AW 

PROVIDER: S-EPMC11588094 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature