Characterization of the Rice Blast Fungal Elicitor-Responsive Gene OsSBP Encoding a Homolog to the Mammalian Selenium-binding Proteins

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The expression of the Oryza sativa selenium-binding protein homolog (OsSBP), which was previously shown to be transcriptionally activated in fungus-infected or elicitor-treated rice leaves, was studied in the response of endogenous signaling molecules and generators of reactive oxygen species. OsSBP expression increased rapidly in response to jasmonic acid (JA) and salicylic acid (SA), both of which play important roles as endogenous signaling molecules that induce resistance to pathogens. OsSBP also responded to abscisic acid (ABA) and paraquat, both of which cause increased generation of reactive oxygen species. The deduced OsSBP protein has a bis (cystenyl) sequence motif CxxC, which acts as an active redox center controlling oxidation / reduction of protein in vivo. This is the first report about the molecular characterization of OsSBP in rice.
日本植物細胞分子生物学会の論文
2003-06-01