We herein investigated sclerotia that were obtained from cool-temperate forests in Mt. Chokai and Mt. Iwaki in north Japan and tentatively identified as the resting bodies of Cenococcum geophilum . The profiles of sclerotia-associated fungal communities were obtained through T-RFLP combined with clone library techniques. Our results showed that sclerotia in Mt. Chokai and Mt. Iwaki were predominated by Arthrinium arundinis and Inonotus sp., respectively. The results of the present study suggested that these sclerotia-associated species were responsible for the formation of sclerotia or sclerotia were originally formed by C. geophilum , but were subsequently occupied by these species after C. geophilum germinated or failed to survive due to competition.
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