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Defence cascade in Verticillium-infected grafted tomato
Ross N Nazar1, Xin Xu1, Josefa Blaya Fernandez1
1a Department of Molecular and Cellular Biology , University of Guelph , Guelph , ON Canada.
Abstract:
In tomato the Ve1-gene provides resistance to the vascular pathogen, Verticillium dahliae, race 1; ve1 plants are susceptible. Reciprocal grafts of resistant and susceptible tomato near-isolines were used to examine proteomic changes and, in particular, the effect of the Ve1-gene on the defence/stress protein cascade induced during Verticillium wilt. Based on label-free LC-MS, the results indicate that this defence response is cell-specific, correlates with overall fungal colonization and is mitigated by Ve1 function. The influence of the Ve1-gene in resistant tissues, however, is not actually transferred to susceptible tissues in the grafted plant.
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