Aspen Bibliography

Water-soluble substances in dead branches of Aspen (Populus tremuloides Michx.) and their effects on Fomes igniarius

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Botany

Volume

42

Issue

8

First Page

969

Last Page

977

Publication Date

1964

Abstract

Cold-water extracts from the basal portions of dead branches of trembling aspen markedly stimulated basidiospore germination and mycelial growth of Fomes igniarius var. populinus at concentrations which inhibited spore germination and growth of other varieties of F. igniarius. Water extracts which caused these differential effects could not be obtained from living aspen branches. Selective effects in favor of F. igniarius var. populinus were characteristic of extracts from the surface tissues of branch stubs, as well as from the total cross section, except that surface extracts were less fungistatic and were not found in branches in all stages of deterioration. Extracts from the axillary regions of dead branches were more fungistatic than those from more distal parts. The stimulatory and inhibitory components of dead branch extracts were heat stable and partially soluble in organic solvents.

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