(Bres.) J. Erikss. (Basidiomycotina, Hydanaceae), commonly regarded as a wood decay fungus, was consistently isolated from bareroot nursery Pinus banksiana
Lamb. seedlings. S. brinkmannii
was found in ectomycorrhizae formed by Thelephora terrestris
Ehrh., Laccaria laccata
(Scop.) Cooke, and Suillus luteus
(L.) Roussel. In pure culture combinations with sterile P. banksiana
and Populus tremuloides
Michx. seedlings, S. brinkmannii
colonized root cortical cells while not killing seedlings. Colonization by S. brinkmannii
appeared to be intracellular but typical endo- or ectomycorrhizae were not formed. The fungus did not decay roots, although it was shown to produce cellulase in enzyme tests. Results suggest a unique association between S. brinkmannii
and seedling roots that is neither mycorrhizal nor detrimental; its exact function remains to be elucidated.
Potvin, Lynette R.; Richter, Dana L.; Jurgensen, Martin F.; Dumroese, R. Kasten. 2012. Association of Pinus banksiana Lamb and Populus tremuloides Michx seedling fine roots with Sistotrema brinkmannii (Bres) J Erikss (Basidiomycotina). Mycorrhiza. 22: 631-638.