Sa. Gordon et Rh. Petersen, Infraspecific variation among geographically separated collections of Marasmius scorodonius, MYCOTAXON, 69, 1998, pp. 453-466
Comparative morphology, mating compatibility, and extracellular laccase ana
lyses were used to provide information on infraspecific variation within ge
ographically separated collections of Marasmius scorodonius. Collections/cu
ltures from North America and Europe were used for these analyses. Morpholo
gical analyses revealed one morphological species and mating compatibility
crosses revealed almost complete intercompatibility (a single "biological s
pecies"). Electrophoretic analysis of extracellular laccase revealed four s
corable bands (i.e., two distinct bands for all North American collections
and two distinct but separate bands for all European collections), suggesti
ng the beginnings of genetic divergence based on geographical isolation. La
ccase results were used to analyze possible correlation with morphological
and mating compatibility data.