GrainGenes Reference Report: PRT-21-390
Reference
PRT-21-390
Title
Differential expression of disease resistance in rice lesion-mimic mutants
Journal
Plant Cell Reports
Year
2002
Volume
21
Pages
390-396
Author
[ Hide all but 1 of 7 ] Mizobuchi R Hirabayashi H Kaji R Nishizawa Y Satoh H Ogawa T Okamoto M
Abstract
Summary: Lesion-mimic mutants are useful for investigating mechanisms of disease resistance. We have characterized five lesion-mimic mutants of rice (Oryza sativa L.): spotted leaf 5-2 (spl5-2), Spl12, spl13, spl14, and Spl15, that have broad-spectrum resistance to the rice blast fungus Magnaporthe grisea and the bacterial blight pathogen Xanthomonas campestris pv. oryzae. Autofluorescence, a sign of disease resistance response, was detected in leaf-sheath cells of the spl mutants in the absence of pathogens. In addition, three pathogenesis-related genes, PBZ1, PR1, and Cht3, were expressed in spl5-2, Spl12, and Spl15 after the appearance of lesion-mimicry. In contrast, expression of these genes in spl13 and spl14 started before lesion formation. Interestingly, in spl13 and spl14, enhanced resistance to rice blast and bacterial blight was also induced before the appearance of lesion-mimicry. These results demonstrate that disease resistance is differently expressed in the spl mutants
Keyword
absence
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GrainGenes Reference Report: PRT-21-390
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||