Exposure of corn(Zea mays saccarula) seedlings to atmospheric methyl jasmonalt induced the expression of 6C02E12, the putative lipoxygenase gene, in corn seedlings. Spectrophotometric measurement of conjugated diene formation indicated that methyl jasmonate caused an increase in the amount of lipoxygenase activity. Analysis of time course of 6C02E12 gene expression revealed that the methyl jasmonate-responsive increase of lipoxygenase activity was closely related to the expression of the putative lipoxygenase gene, 6C02E12. Partial sequence of 6C02E12 is reported and heterologous expression of 6C02E12 gene in E. coli is in progress.