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UBC Theses and Dissertations

Decay of wood by the Dacrymycetales Seifert, Keith Anthony


Forty-one strains representing sixteen species in the Dacrymycetales were tested for their abilities to decay wood using the soil block test. Dacrymyces stillatus, D. capitatus, D. dictyosporus, Dacryopinax spathularia, Cerinomyces ceraceus and Calocera cornea and C. lutea caused considerable decay of wood. Dacrymyces palmatus, D. minor, D. novae-zelandiae and Calocera viscosa also decayed wood to a significant extent. Four distinct types of decay were noted; three types of brown-rot and one type of white-rot. The brown-rotting strains were unusual in that some degraded considerable amounts of lignin. Monokaryons of Dacryopinax spathularia showed a reduced capacity to decay wood, while those of Dacrymyces stillatus and D. palmatus did not decay wood. Types of rot associated with species in the Tremellales and Auriculariales thought to be saprobic on wood are presented based on herbarium specimens.

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