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Plant and Cell Physiology, 1969, Vol. 10, No. 2 283-289
© 1969

Article

Alicyclic acid metabolism in plants 3. Fate of 14C-shikimate and 14C-quinate in mung bean plants

TAKAO MINAMIKAWA, SEIICHI YOSHIDA and MASAO HASEGAWA

Department of Biology, Tokyo Metropolitan University Fukazawa, Setagaya-ku, Tokyo, Japan

Young mung bean plants (Phaseolus mungo) were exposed to 14C-shikimate or 14C-quinate in the light. After 8 or 23.5 hr of incubation at 25°C, radioactivities in free and bound amino acids, organic acids, soluble and insoluble carbohydrates, ether-soluble fraction and lignin were determined. Shikimic and quinic acids were separated by the combined use of paper-chromatography and column chromatography. Specific activity of formed quinate or shikimate was only slightly lower than that of fed shikimate or quinate. Specific activities of phenylalanine, tyrosine and bound tryptophan were high as compared with those of non-aromatic amino acids. Discussion is focused upon the interconversion between shikimate and quinate, and their roles in the biosynthesis of aromatic amino acids.

(Received November 15, 1968; )
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