Biochemical studies on biogenesis of mitochondria in wounded sweet potato root tissue I. Time course analysis of increase in mitochondrial enzymes
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概要
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Cytochrome oxidase and succinate dehydrogenase activities increased during aging of sliced tissue for sweet potato root after respective lag phases of about 8 and 10 hr. The increase in the former was stepwise. On the other hand, malate dehydrogenase activity increased slowly without a lag phase. Spectrophotometric determination of heme contents in mitochondria indicated that the hemes increased after a lag phase for at least 8 hr during aging. Treatment of tissue slices with cycloheximide at a concentration of 10^<-6> M prior to aging resulted in an extension of the lag phase in the increase of cytochrome oxidase activity and in complete inhibition of the increase of malate dehydrogenase activity. The antibiotic, at a concentration of 10^<-5> M, completely suppressed the increases. Chloramphenicol (6×10^<-3> M) also blocked the increases, except for that in malate dehydrogenase activity at an early stage of aging.
著者
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Asahi Tadashi
Laboratory Of Biochemistry Faculty Of Agriculture Nagoya University
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Sakano Katsuhiro
Laboratory Of Biochemistry Faculty Of Agriculture Nagoya University
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Asahi Tadashi
Laboralory Of Biochemistry Faculty Of Agriculture Nagoya University
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