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Plant Physiology 69:553-556 (1982)
© 1982 American Society of Plant Biologists

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Niacin Biosynthesis in Seedlings of Zea mays1

John B. Tarr2 and Joseph Arditti3

Department of Developmental and Cell Biology, University of California, Irvine, California 92717

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.

2 Present address: Analytical Developmental Corp., 1875 Willow Park Way, P.O. Box 744, Monument, CO 80132.

3 Address for reprint requests.

1 Supported by National Science Foundation Grant PCM 76-21483.




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A. Katoh, K. Uenohara, M. Akita, and T. Hashimoto
Early Steps in the Biosynthesis of NAD in Arabidopsis Start with Aspartate and Occur in the Plastid
Plant Physiology, July 1, 2006; 141(3): 851 - 857.
[Abstract] [Full Text] [PDF]


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Copyright © 1982 by the American Society of Plant Biologists