Pto mutants differentially activate Prf-dependent, avrPto-independent resistance and gene-for-gene resistance

From: Plant Physiology | Date: March 1, 2003| Author: | Copyright information

Pto Mutants Differentially Activate Prf-Dependent, avrPto-Independent Resistance and Gene-forGene Resistance1

Pto confers disease resistance to Pseudomonas syringae pv tomato carrying the cognate avrPto gene. Overexpression of Pto under the cauliflower mosaic virus 35S promoter activates spontaneous lesions and confers disease resistance in tomato (Lycopersicon esculentum) plants in the absence of avrPto. Here, we show that these AvrPto-independent defenses require a functional Prf gene. Several Pto-interacting (Pti) proteins are thought to play a role in Pto-mediated defense pathways. To ...

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