Pathogenesis-related gene expression in rice is correlated with developmentally controlled Xa21-mediated resistance against Xanthomonas oryzae pv. oryzae |
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| Institution: | 1. Department of Biology, Colorado State University, Fort Collins, CO 80523, United States of America;2. Department of Statistics, Colorado State University, Fort Collins, CO 80523, United States of America;3. Department of Biology, University of Oklahoma, Norman, OK 73019, United States of America;4. Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523, United States of America;1. Department of Biology, University of Florida, Gainesville, FL 32610, USA;2. Genetics Institute, University of Florida, Gainesville, FL 32610, USA;3. Department of Plant Pathology, University of Florida, Gainesville, FL 32610, USA;4. Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA;5. Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA |
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| Abstract: | Disease resistance mediated by the resistance gene Xa21 is developmentally controlled in rice. We examined the relationship between Pathogenesis Related (PR) defense gene expression and Xa21-mediated developmental disease resistance induced by Xanthomonas oryzae pv. oryzae (Xoo). OsPR1a, OsPR1b, and OsPR1c genes were cloned and their induction was analyzed, in addition to the OsPR10a gene, at the juvenile and adult stages in response to a wildtype Xoo strain that induces a resistance response (incompatible interaction) and an isogenic mutant Xoo strain that does not (compatible interaction). We found that the adult stage leaves are more competent to express these OsPR1 genes and that the Xa21 locus is required for the highest levels of induction. |
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