define gene for gene recognition
In geneâforâgene systems, resistance of a plant to a pathogen is due to the ârecognitionâ by plant surveillance system (i.e. plant resistance gene product) of a pathogen avirulence determinant encoded by an avirulence gene to eventually result in triggering of plant immunity.2009) Leptosphaeria maculans avirulence gene AvrLm4â7 confers a dual recognition specificity by the Rlm4 and Rlm7 resistance genes of oilseed rape, and circumvents Rlm4âmediated recognition through a single amino acid change.