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Plant and Cell Physiology, 1982, Vol. 23, No. 8 1471-1474
© 1982

Short communication

Change in Properties of Phosphoenolpyruvate Carboxylase in Kalanchoe daigremontiana with Leaf Age

Tadashi Amagasa

Department of Biology, Tokyo Metropolitan University Fukazawa, Setagaya-ku, Tokyo 158, Japan

The activity of phosphoenolpyruvate (PEP) carboxylase (EC 4.1.1.31 [EC] ) increased with leaf age in Kalanchoe daigremontiana. Polyacrylamide gel electrophoresis showed 3 bands of PEP carboxylase activity, one predominant in young leaves, another predominant in older leaves. PEP carboxylase activities in desalted extract differed according to pH, at acidic pH the enzyme activity of young leaves decreased drastically, whereas that of older leaves remained nearly constant.

(Received August 2, 1982; Accepted September 27, 1982)
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