Antagonistic interactions between the SA and JA signaling pathways in Arabidopsis modulate expression of defense genes and gene-for-gene resistance to cucumber mosaic virus.

Abstract excerpt

Gene-for-gene resistance to a yellow strain of cucumber mosaic virus [CMV(Y)] is conferred by the dominant RESISTANCE to CMV(Y) (RCY1) allele in the Arabidopsis thaliana ecotype C24. RCY1-conferred resistance to CMV(Y) and expression of the Pathogenesis-related 1 (PR-1) and PR-5 genes are partially compromised by the eds5 mutation and the nahG transgene that block accumulation of salicylic acid (SA). In contrast,...

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