Abstract
Abstract Although Russula ochroleuca is a common ectomycorrhizal (ECM) species in European forests, its reproduction mode, dispersal range, and population structure remains unknown. Altogether, 462 fruit bodies from three spruce forests (two 15 km apart, one 230 km distant from the first two) were analysed using AFLP markers. A mixed mode of reproduction, with several large genets accompanied by a majority of single fruit body genets, was found. Low level of inbreeding (Fis = 0.0021–0.0072), low level of genetic differentiation among subpopulations (PhiPT = 0.037–0.190) and negligible isolation by distance (r = 0.033, P = 0.005) indicates effective spore dispersal and a high level of outcrossing across the sampled area. Finally, we discovered temporal diversification within this species, as evidenced by genetic differentiation between early (August) and late (September) fruiting genotypes.
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