Abstract:

In order to evaluate the direct relationship between G6PDH and phenylpropanoid metabolism, several kinds of sugars, including products of G6PDH, 6-phosphategluconate and sucrose were tested as to whether they enhance activity of phenylalanine ammonia-lyase and total flavonoids production in the tissue incubation system. The results indicated that the activity of PAL in fruit with sucrose, glucose, glucose-6-phosphate and 6-phosphategluconate incubation increased, and in concert on accumulation of total phenols and total flavonoids. However, 2-deoxyglucose and mannitol, which were inefficiently metabolized, had no effect on PAL activity and amount of phenols.