Skip to main content
Entomology 2021 Main banner
Icon Legend
This session is not in your schedule.
This session is in your schedule. Click again to remove it.
Presentation Icons
In-Person
In-Person
Livestream
Livestream
On-Demand
On-Demand
Student Competition
Student Competition
Video Chat
Video Chat
Ticketed Event
Ticketed Event
Poster Icons
Student Competition
Student Competition
In-Person
In-Person
Poster
Poster
On-Demand
On-Demand
Q&A ViewAttendees 2

Physiology, Biochemistry, and Toxicology

Student Competition 10-Minute Paper

Grad PBT: Genetics

Soybean Aphid Resistance to Pyrethroid Insecticides: Variability in Target-Site Mutations Among and Within Fields

Monday, November 1, 2021
9:00 AM – 9:12 AM MT
Location: Colorado Convention Center, Meeting Room 401-402
In-Person Student Competition

    Presenting Author(s)

  • Rosa E. Lozano

    Graduate Assistant
    University of Minnesota
    Saint Paul, Minnesota

    • Co-Author(s)

  • Amelia Lindsey

    Assistant Professor
    University of Minnesota
    Minneapolis, Minnesota

  • DA

    David Andow

    University of Minnesota
    Saint Paul, Minnesota

  • DP

    Debora Paula

    Embrapa
    Brasília, Distrito Federal, Brazil

  • RK

    Robert L. Koch

    University of Minnesota
    Saint Paul, Minnesota

Soybean aphid, Aphis glycines Matsumura, is a significant pest threat to soybean in North America and has developed resistance to one of the primary groups of insecticides used for its control, pyrethroids. Target-site insensitivity is the primary mechanism involved in pyrethroid resistance in several insect species, in which a single nucleotide change can cause loss of sensitivity. We previously identified four-point mutations in soybean aphid colonies with pyrethroid resistance. The four mutations are M918L (skdr), M918I, L925M and mutation L1014F (kdr) located in domain II in the sodium channel. To determine the variation in field-collected soybean aphid populations, we used a high throughput sequencing approach to survey the voltage-gated sodium channel (VGSC) mutations from soybean aphid collected from multiple fields across the state of Minnesota and from multiple locations within each field. Results of this research continue to be analyzed. Understanding of this spatial variability will help inform insecticide resistance management recommendations.