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- Title
Early and specific gene expression triggered by rice resistance gene Pi33 in response to infection by ACE1 avirulent blast fungus.
- Authors
Vergne, E.; Ballini, E.; Marques, S.; Mammar, B. Sidi; Droc, G.; Gaillard, S.; Bourot, S.; DeRose, R.; Tharreau, D.; Nottéghem, J.-L.; Lebrun, M.-H.; Morel, J.-B.
- Abstract
• Our view of genes involved in rice disease resistance is far from complete. Here we used a gene-for-gene relationship corresponding to the interaction between atypical avirulence gene ACE1 from Magnaporthe grisea and rice resistance gene Pi33 to better characterize early rice defence responses induced during such interaction. • Rice genes differentially expressed during early stages of Pi33/ ACE1 interaction were identified using DNA chip-based differential hybridization and QRT-PCR survey of the expression of known and putative regulators of disease resistance. • One hundred genes were identified as induced or repressed during rice defence response, 80% of which are novel, including resistance gene analogues. Pi33/ ACE1 interaction also triggered the up-regulation of classical PR defence genes and a massive down-regulation of chlorophyll a/b binding genes. Most of these differentially expressed genes were induced or repressed earlier in Pi33/ ACE1 interaction than in the gene–for–gene interaction involving Nipponbare resistant cultivar. • Besides demonstrating that an ACE1/ Pi33 interaction induced classical and specific expression patterns, this work provides a list of new genes likely to be involved in rice disease resistance.
- Subjects
GENE expression; PYRICULARIA grisea; PYRICULARIA; PLANT diseases; RICE disease &; pest resistance
- Publication
New Phytologist, 2007, Vol 174, Issue 1, p159
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.2007.01971.x