NEWS OF MALUS × ROBUSTA 5 CANDIDATE RESISTANCE GENE
Malus × robusta 5 is a crab apple highly resistant against the disease fire blight attributed to a potential resistance gene at the top of linkage group three. The resistance gene was identified on a 162 kb BAC clone spanning the region of a major QTL. The protein sequence of this gene was further analyzed and classified as CC-NBS-LRR (CNL). By comparing the previously described CNLs of other plants targeting bacterial pathogens and the presence or absence of the interacting proteins, the hypothetical mode of function was suggested to be homolog to the resistance protein RPS2 in Arabidopsis. The remaining predicted genes on the BAC sequence were annotated. Additional potential candidate resistance genes were analyzed in detail, but their predicted function could not be verified.
Fahrentrapp, J., Broggini , G.A.L., Gessler, C., Kellerhals, M., Malnoy, M., Peil, A. and Richter, K. (2014). NEWS OF MALUS × ROBUSTA 5 CANDIDATE RESISTANCE GENE. Acta Hortic. 1048, 51-53
apple, gene function, breeding, fire blight, Erwinia amylovora