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ARS Home » Southeast Area » Raleigh, North Carolina » Plant Science Research » Research » Publications at this Location » Publication #323966

Research Project: Genetic Analysis of Complex Traits in Maize

Location: Plant Science Research

Title: A genome-wide association study for partial resistance to maize common rust

item OLUKOLU, BODE - North Carolina State University
item TRACY, WILLIAM - University Of Wisconsin
item WISSER, RANDALL - University Of Delaware
item DE VRIES, BRIAN - University Of Wisconsin
item Balint-Kurti, Peter

Submitted to: Phytopathology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/16/2016
Publication Date: 3/1/2016
Citation: Olukolu, B., Tracy, W., Wisser, R., De Vries, B., Balint Kurti, P.J. 2016. A genome-wide association study for partial resistance to maize common rust. Phytopathology. 1036:745-751.

Interpretive Summary: In this work we map resistance to common rust in maize in a maize diversity panel. We show that resistance to common rust is correlated with resistance to several other diseases and with defense response. We identify 3 regions of the genome which probably carry genes associated with resistance to common rust.

Technical Abstract: Quantitative resistance to maize common rust (causal agent Puccinia sorghi) was assessed in an association mapping population of 274 diverse inbred lines. Resistance to common rust was found to be moderately correlated with resistance to three other diseases and with the severity of the hypersensitive defense response previously assessed in the same population. Using a mixed linear model accounting for the confounding effects of population structure and flowering time, genome-wide association tests were performed based at 246,497 SNP loci. Three loci associated with maize common rust resistance were identified. Candidate genes at each locus had predicted roles in cell wall modification.