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Legumes, the third largest family of flowering plants, are composed of more than 18,000 species with diverse characteristics, and many of the species are of agronomic importance. They have long been the targets of breeding programs and, in this regard, genomics may provide the greatest potential for benefit. Legume genomics in two model plants, Lotus japonicus and Medicago truncatula, has advanced rapidly over the past few years (Young

Jasmonates are known as growth regulators, which have cyclopentanone or cyclopentenone ring, and synthesized through lipoxygenase pathway. Jasmonates are widely distributed in the plant kingdom and modulates wounding responses, disease responses, and anther development. Some kinds of jasmonates were shown to have specific effects on plants. 12-oxo-phytodienoic acid (OPDA), a precursor for jasmonic acid (JA) biosynthesis, promotes tendril coiling, and this effect is stronger than MeJA (Falkenstein E., et al., 1991). However, except for the fact, little is known about the OPDA specific function in various physiological events.