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Abstract
Resistance-Gene-Mediated Defense Responses against Biotic Stresses in the Crop Model Plant Tomato
Chaudhary R and Atamian HS
Complex series of defense response activation, consistent with the studies conducted in the model plant Arabidopsis thaliana, has been demonstrated in tomato during incompatible pathogen/pest interactions. During the past two decades, numerous tomato genes have been identified conferring resistance to diverse pathogens/ pests in a gene-foR-gene manner. A few of these cloned resistance (R)-genes (Cf and Pto) have been extensively studied and excellent existing reviews describe R-gene function, interacting proteins and the mechanism of Avirulence effector perception. Recent comprehensive gene expression analysis of tomato responses to biotic stresses resulted in identification of genes and potential molecular processes that are associated with several of the tomato R-gene-mediated resistance responses. The purpose of this review is to provide an overview of tomato R-gene-mediated defense responses to different pathogens/pests together with the components involved in the organization of this highly complex network of plant defenses.