sentences:  In "L. sativus" ODAP is synthesized in the young seedlings from the precursor (β-isoxazolin-5-on-2-yl)-alanine, also known as BIA.BIA has not been detected in mature plant parts or ripening seeds.The pathway begins with the formation of BIA from O-acetyl-L-serine (OAS) and isoxazolin-5-on.