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Rhizopus oligosporus asexual reproduction


Conceived and designed the experiments: The Rhizopus oryzae species complex is a group of zygomycete fungi that are common, cosmopolitan saprotrophs. Some strains are used beneficially for production of Asian fermented foods but they can also act as opportunistic human pathogens. Here we report on the mating behavior and genetic structure of the mating locus for 54 isolates of the R. All 54 strains have a mating locus similar in overall organization to Phycomyces blakesleeanus and Mucor circinelloides Mucoromycotina, Zygomycota.

These correspond to previously described sibling species R. Within each species, discordant gene phylogenies among multiple loci suggest an outcrossing population structure. When crossed with tester strains of the opposite mating type, most isolates of R. In spite of the reluctance of most strains to mate in vitrothe conserved sex locus structure and evidence for outcrossing suggest that a normal sexual cycle occurs in both species. Rhizopus oryzae is a complex of closely related, heterothallic species [1][2][3][4] that are common, cosmopolitan saprotrophs in soil, dung, and rotting vegetation [5][6][7][8].

Strains of the R. Rhizopus oligosporus asexual reproduction