CONVERSION OF (2Z,4E)-5-(1',2'-EPOXY-2',6',6'-TRIMETHYLCYCLOHEXYL)-3-METHYL-2,4-PENTADIENOIC ACID TO XANTHOXIN ACID BY CERCOSPORA CRUENTA, A FUNGUS PRODUCING (+)-ABSCISIC ACID

Article abstract of DOI:10.1016/S0031-9422(00)83100-3

(+/-)-(2Z,4E)-5-(1',2'-epoxy-2',6',6'-trimethylcyclohexyl)-3-methyl-2,4-pentadienoic acid was metabolized by Cercospora cruenta, which has the ability to produce (+)-abscisic acid (ABA), to give (+/-)-(2Z,4E)-xanthoxin acid, (+/-)-(2Z,4E)-5'-hydroxy-1',2'-epoxy-1',2'-dihydro-β-ionylideneacetic acid, (+/-)-1',2'-epoxy-1',2'-dihydro-β-ionone and trace amounts of ABA.Key Word Index - Cercospora cruenta; fungus; metabolism; plant growth inhibitor; xanthoxin acid; abscisic acid.