Niacin Biosynthesis in Seedlings of Zea mays1
AUTOR(ES)
Tarr, John B.
RESUMO
Evidence obtained from incubation of corn (Zea mays cv. Golden Bantam) seedlings in dl-[benzene ring-U-14C]tryptophan, l-[5-3H]tryptophan, l-[U-14C]aspartate and [U-14C]glycerol indicates that niacin is synthesized in these plants via oxidative degradation of tryptophan. Aspartate and glycerol do not appear to be precursors of niacin in corn seedlings.