Furanocoumarins in Florida celery varieties increased by fungicide treatment.

摘要

Florida celery cultivars Florida 2-14, Florimart, M9, Florida 296, M68 and Junebelle contained total psoralen + bergapten + xanthotoxin + isopimpinellin ranging from about 12 to 50μg/g. Treatment of the commercial cultivar 2-14 with Bravo 500 [chlorothalonil], Manzate-D [mancozeb], or Kocide 101 [copper hydroxide] increased bergapten 2-4 times in leaves and stalk, xanthotoxin 2-3 times in stalk and isopimpinellin about 2-3 times in leaves, but did not increase psoralen levels. These increases represented increased calculated biological activity toward human skin. This is the first report of fungicide induction of furanocoumarins in celery.