Development of catalase activity in yeast in relation to growth and respiration

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1) When yeast cells grown anaerobically were adapted to aerobic culture in a normal medium, catalase formation was markedly enhanced after the earlier stage of exponential growth of the cells. The same thing occurred with cells transferred from an anaerobic culture into a nitrogen deficient medium. 2) The catalase activity of aerobically grown cells declined progressively until glucose, which had been added to the medium was profoundly exhausted. This decline was followed by a progressive recovery of activity to a normal level with the growth of the cells. Similar behavior of catalase was also seen at low concentrations of glucose, except that an abrupt rise in activity was observed at the beginning of incubation. Even when cells which had declined to a minimum of catalase activity were aerated in phosphate buffer, they continued to synthesize catalase. 3) The pattern of alteration of catalase activity during cell growth was accompanied by a comparable pattern of alteration in respiratory capacity. On the basis of this finding, together with the fact that antimycin A causes intensive depression in catalase formation, it may be inferred that the formation of the respiratory chain conducts the formation of catalase. 4) In the presence of ethyl alcohol as the carbon source in place of glucose, a rise in both catalase activity and respiratory capacity occurred from initiation of incubation. This fact can be interpreted to mean that the repressive effect of glucose on catalase formation depends on the aerobic character of the cells.
日本植物生理学会の論文

Development of catalase activity in yeast in relation to growth and respiration

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