Cytology of Chlamydospore Germination in Protomyces macrosporus Unger

抄録

Observations are presented on the cytology of chlamydospore germination and sporogenesis in Protomyces macrosporus Unger. A resting chlamydospore contains 50 or more diploid nuclei. The chlamydospore on germination produces a thinwalled vesicle and the nuclei become arranged along the periphery of the vesicle. Meiotic division of these nuclei results in the formation of quartets. Radial septation takes place enclosing a nucleus in each cell, which develops into a uninucleate haploid spore. Two chromosomes appear to be the haploid number (n=2) in the complerhent of the species. Taxonomic aspects of the genus Protomyces in the fam. Protomycetaceae are discussed in light of these observations.