Abstract
Dactylium dendroides mycelia exposed to different oxygen tensions secreted galactose oxidase in proportion to the pO 2. The intracellular levels of galactose oxidase, catalase, and superoxide dismutase increased 10.4-, 2.3-, and 2.1-fold, respectively, when the oxygen tension was raised from zero to 100%. Oxygen consumption was enhanced by increased partial pressure of O 2 and was higher than CO 2 production above 40% O 2. The results suggest that galactose oxidase could participate in an oxygen protection mechanism and/or as a microbicidal agent in D. dendroides.
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