| Abstract: | The effects of the intensity of iron and zinc deficiencies respectivelyon a range of enzymes in Neurospora have been determined. Irondeficiency reduced catalase, peroxidase, cytochrome c reductase,and oxidase (in that order) and DPN'ase activity whereas Zn-deficiencyreduced glutamic dehydrogenase. TPNH and DPNH diaphorases weredepleted by Zn or Fe deficiency and these enzymes were reconstitutedwithin 24 hours of returning the deficient metal in vivo tothe felts. Responses of other enzymes to a shortage of eithermetal varied greatly depending on the degree of the deficiency. |
