Forest age correlates with fine-scale spatial structure of Matsutake mycorrhizas.

摘要: Examining the fine-scale spatial structure of fungal populations can tell us much about how individual species reproduce and disperse throughout natural landscapes. Here we study genetic Tricholoma matsutake, a prized edible medicinal mushroom, by systematic sampling mycorrhizas within fairy rings in 50-y-old old-growth forests two villages. Using single nucleotide polymorphism DNA markers show that both forest age classes villages showed high levels genotypic diversity, consistent with reproductive life history predominated outcrossing via basidiospore dispersal. Both percentage polymorphic loci rings, as well genotype diversity were higher compared to forests. Fifty-year-old significant autocorrelation between pairs up 42 m, pattern isolation-by-distance structure. Spatial patterns random. Furthermore, AMOVA analysis indicates 11 % molecular variance is partitioned villages, whereas no We conclude T. matsutake are result founder effect maintained local inoculation sources. This attenuates accumulate inocula from more distance speculate on mosaicism may chronosequence. Finally, discuss population dynamics dispersal strategy contrast other ectomycorrhizal species.