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Plant and Cell Physiology, 1982, Vol. 23, No. 8 1463-1466
© 1982

Short communication

Studies on Microbody Development in Wounded Sweet Potato Root Tissue: Proposal for the Post-Translational Transport of Catalase into Preexisting Microbodies

Muneharu Esaka1, Takeshi Takahashi2 and Tadashi Asahi3

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

3To whom correspondence should be addressed

Pure microbody fractions could be prepared in considerable yields from sweet potato root tissue slices incubated for 16 hr and 3 days. The ratio of catalase activity to phospholipid content in the fraction from slices incubated for 3 days was about 3 times that from slices incubated for 16 hr. Total catalase activity in the former slices was about twice that in the latter. This suggests that catalase synthesized during incubation of the slices is transported into microbodies preexisting in intact tissue.

1 Present address: Laboratory of Food Technology, Faculty of Applied Biological Science, Hiroshima University, Fukuyama, Hiroshima 720, Japan.

2 Present address: Terumo Co., Ltd., Omiya, Fujinomiya, Shizuoka 418, Japan.

(Received July 1, 1982; Accepted September 24, 1982)
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