Plant lipoxygenase may be involved in a number of diverse aspects of plant physiology including growth and development, pest resistance, and senescence or responses to wounding. It catalyzes the hydroperoxidation of lipids containing a cis,cis-1,4-pentadiene structure. (9Z,12Z)-octadecadienoate + O2 = (9S)-hydroperoxy-(10E,12Z)-octadecadienoate Binds 1 Fe cation per subunit. Iron is tightly bound. Lipid metabolism; oxylipin biosynthesis. Monomer. Found in maturing and developing seeds. In young seedlings it is found in cotyledons, hypocotyls, roots and primary leaves. Developmentally regulated. Expression is high 3 to 5 days after germination and returns to basal level by day 9. By pod removal and methyl jasmonate. Belongs to the lipoxygenase family.