Variability of isozyme and rapd markers among isolates of Mucor genevensis

Mucor genevensis is a dimorphic and homothallic fungal species (Zygomycetes). Ten M. genevensis strains, each strain of the recently described new homothallic species (M. meguroense and M. hachijyoensis) and strains of M. hiemalis and M. piriformis (as outgroups for numerical analysis) were investigated. Five different enzyme systems (CAT, GDH, G6D, MDH and SOD) and five 10-bp random primers were used in isoenzyme and random amplified polymorphic DNA analyses, respectively. The data from these studies were subjected to numerical analyses. Substantial intraspecific variability was detected in M. genevensis with both of the methods applied. Though both the M. meguroense strain and the M. hachijyoensis strain revealed characteristic differences, they grouped closer to the homothallic M. genevensis than to the heterothallic M. piriformis and M. hiemalis strains.