Production of Disease Resistance in Citrus by Understanding Natural Defense Pathways and Pathogen Interactions

摘要

Molecular tools have facilitated the discovery and study of genes associated with natural defense pathways in a number of model systems. In our laboratories, citrus homologues of key genes have been identified (for instance, NPR1 and PR1) using comparative analysis and their expression characterized. In addition, differential gene expression during infection with citrus canker has been examined. Both approaches have facilitated the study of defense responses in citrus. The improved understanding of these natural defense pathways in model species has allowed plant-derived genes to be used to induce disease resistance. These recent discoveries as well as strategies for their practical application in citrus breeding are discussed in this review.