Converts benzoic acid into the volatile ester methyl benzoates. This scent, mostly produced in a rhythmical, diurnal manner, attracts the pollinators. benzoate + S-adenosyl-L-methionine = methyl benzoate + S-adenosyl-L-homocysteine Expressed only in the upper and lower petal lobes (PubMed:10852939, PubMed:14630969). Not found in the corolla tubes, anthers, pistils, sepals and ovaries (PubMed:10852939). Expressed in mature flowers with a peak 6 to 7 days postanthesis. Fades out in flower petals after pollination, thus resulting in a decrease in methylbenzoate emission (PubMed:14630969). Strongly repressed by ethylene (PubMed:14630969). The N-terminus is blocked. Belongs to the methyltransferase superfamily. Type-7 methyltransferase family.