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Biosci Biotechnol Biochem. 2000 Jan;64(1):125-33.

Aspirin and salicylic acid do not inhibit methyl jasmonate-inducible expression of a gene for ornithine decarboxylase in tobacco BY-2 cells.

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Department of Biological Mechanisms and Functions, Graduate School of Bioagricultural Science, Nagoya University, Japan.


Similar to the prostanoid-mediated inflammatory response in mammals, jasmonate-mediated wound response in plant leaves is inhibited by salicylic acid (SA) or acetylsalicylate (aspirin). In tobacco BY-2 cells, expression of the gene for ornithine decarboxylase (ODC) involved in putrescine synthesis is rapidly inducible by methyl jasmonate (MeJA). A nuclear gene for ODC isolated from tobacco, gNtODC-1, was an intron-less gene and MeJA induced the expression of a GUS fusion gene with the gNtODC-1 promoter in transformed tobacco cells. Although SA alone did not induce the expression, 0.2 to 20 microM SA increased the MeJA-induced expression of the fusion gene to about two-fold. A similar increase was observed with aspirin but not with 3- or 4-hydroxybenzoic acids. SA at concentrations up to 200 microM did not inhibit the MeJA-induction of mRNAs for the GUS fusion gene and the endogenous gene for ODC.

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