Abstract
There are no significant changes in the acrylamide gel electrophoretic pattern of proteins associated with germination of spores of bracken fern, Pteridium aquilinum (L.) Kuhn. The pattern of 14C-labeled proteins of spores treated with actinomycin D is similar to the control when the drug is applied during rhizoid initiation, but changes somewhat when it is applied during rhizoid elongation. Treatment of spores with 5-fluorouracil during rhizoid initiation and elongation does not change the profile of labeled proteins. It is concluded that translation level control regulates protein synthesis during rhizoid initiation and that a shift to transcription level occurs during rhizoid elongation.
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