Suppression of host defense in compatible plant-Pseudomonas syringae interactions |
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Authors: | Nomura Kinya Melotto Maeli He Sheng-Yang |
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Institution: | Department of Energy Plant Research Laboratory and Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824, USA. |
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Abstract: | Despite impressive advances in the study of plant resistance to pathogens, little is known about the molecular basis of plant susceptibility to virulent pathogens. Recent progress in susceptible plant-Pseudomonas syringae interactions has provided a glimpse into the battles fought between plants and bacterial pathogens. A key step for pathogenesis appears to be the suppression of host defenses. Suppression of host defenses, including basal defense, gene-for-gene resistance and nonhost resistance, is a key step for pathogenesis. Defense suppression is mediated by bacterial effector proteins, which are secreted through the type III secretion system, and by coronatine, a bacterial toxin that structurally and functionally mimics methyl jasmonate, a plant defense signaling molecule. |
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