Research Abstracts Online
January 2009 - March 2010
University of Minnesota Twin Cities
College of Food, Agricultural, and Natural Resource Sciences
of Agronomy and Plant Genetics
PI: David F. Garvin
Improving Rust and FHB Resistance in Hard Red Spring Wheat Through Genetics and Genomics
This project involves research to identify genes that accompany resistance in wheat to infection by rust pathogens. The researcher uses Affymetrix GeneChips to identify changes in gene expression between resistant and susceptible wheat lines after exposure to the causal agent of both leaf and stem rust, and to track the expression of genes of interest over time. The model plant Brachypodium is also employed as a surrogate to understand more fully the molecular basis of rust resistance in wheat. Gene expression profiles have been identified that indicate coordinated metabolic responses in wheat that provide energy needed to sustain basal defense responses to leaf rust. The next step is to characterize temporal aspects of the observed gene changes in wheat seedlings to the pathogen causing stem rust and compare the results between these experiments and those completed for the pathogen causing leaf rust.