Analysis of Phytotoxins Extracted from the Seed Pathogen Pyrenophora semeniperda

Authors

Joshua Nicholson, Brigham Young University
Dr. Brad Geary, Brigham Young University

Keywords

phytotoxins, see pathogen, Pyrenophora semeniperda, fungal pathogen

College

Life Sciences

Department

Plant and Wildlife Sciences

Abstract

This project seeks to establish and understand a link between virulence and phytotoxin production between varying strains of Pyrenophora semeniperda, a necrotrophic fungal pathogen that attacks cheatgrass (Bromus tectorum). Cheatgrass is an intermountain west invasive weed that is outsourcing native plants and damaging ecosystems from desert to montane. Cheatgrass monocultures can increase fire frequency which can occur as often as 3-5 years. P. semeniperda is a naturally occurring fungal pathogen that can cripple a cheatgrass seed before germination with the use of a secondary metabolite such as a phytotoxin. Predation of this type is effective in destroying the seed bank of cheatgrass and limiting its yearly production. Our team is focused on understanding how this fungal pathogenesis works and if it is possible to form a mycoherbicide that can be used to eradicate cheatgrass monocultures.

Recommended Citation

Nicholson, Joshua and Geary, Dr. Brad (2013) "Analysis of Phytotoxins Extracted from the Seed Pathogen Pyrenophora semeniperda," Journal of Undergraduate Research: Vol. 2013: Iss. 1, Article 1606.
Available at: https://scholarsarchive.byu.edu/jur/vol2013/iss1/1606