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Nuclei, Nucleic Acids and Protein in Sporangiospores of Mucor Bacilliformis and Other Mucor Species

1977; Taylor & Francis; Volume: 69; Issue: 5 Linguagem: Inglês

10.1080/00275514.1977.12020154

1557-2536

R. Storck, R. C. Morrill,

Bacteriophages and microbial interactions

SUMMARYThe sporangiospores of Mucor bacilliformis (NRRL 2346) were compared to those of Mucor fragilis (ATCC 10777), Mucor hiemalis (ATCC 1205), Mucor mucedo (ATCC 7941), Mucor racemosus (ATCC 1216a) and Mucor rouxii (NRRL 1894) with respect to number of nuclei, weight, amount of DNA, RNA and protein and rate of germination. They were found to be mostly uninucleate like those of the other five organisms. They have, however, a much smaller weight and contain significantly less DNA, RNA and protein. The relative proportions of these macromolecules are also characteristically different for M. bacilliformis. The ratio of RNA to DNA is about two, whereas for the other Mucor species it varies from eight to thirteen. These results suggest that the sporangiospores of M. bacilliformis are deficient in RNA.