Abstract
RSOsPR10 (Root Specific Oryza sativa Pathogenesis-Related 10) was detected as the protein induced by drought and salt treatment in process of proteome analysis with rice roots. This gene showed high similarity to PBZ1 gene, which codes stress responsible protein in rice. The mRNA was induced specifically in roots by drought, salt, probenazole, infection with fungus and jasmonic acid (JA), but not by low temperature, abscisic acid and salicylic acid (SA) (Hashimoto et al., PCP, 2004). In this study, we analyzed the induction of RSOsPR10 in rice seedlings with the specific antibody. As the result, this protein accumulated exclusively in the roots by salt, drought, wounding and JA treatment, showing the same tendency as the mRNA expression patterns. The induction by salt, drought and JA treatment was almost completely suppressed by SA. These results indicate that RSOsPR10 is induced via JA and that JA and SA may act antagonistically.
