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Plant and Cell Physiology, 1973, Vol. 14, No. 1 193-196
© 1973

Short communication

Changes in glutamate dehydrogenase activity in cut-injured sweet potato root tissue1

Yoshiaki Kozuka2 and Ikuzo Uritani

Laboratory of Biochemistry, Faculty of Agriculture, Nagoya University Nagoya, Aichi 464, Japan

Changes in glutamate dehydrogenase activity in sweet potato root tissue in response to slicing were investigated with mitochondrial and supernatant fractions. Results indicated that activity in mitochondrial fraction had decreased, whereas activity in supernatant fraction had increased, 12 hr after slicing. The increase in activity in the supernatant fraction may be related to the regeneration of phenylalanine, a precursor of polyphenols.

1This paper constitutes Part 104 of the Phytopathological Chemistry of Sweet Potato with Black Rot and Injury.

2Present address: Laboratory of Biochemistry, Faculty of Agriculture, University of Tokyo, Bunkyoku, Tokyo 113, Japan.

(Received August 15, 1972; )
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