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Stimulation of Germination of Polyporus dryophilus Basidiospores by Carbon Dioxide. H. L. Morton, Associate Professor of Forest Pathology, School of Natural Resources, University of Michigan, Ann Arbor, Michigan 48104; D. W. French, Professor of Plant Pathology, University of Minnesota, St. Paul, Minn. 55101. Phytopathology 64:153-154. DOI: 10.1094/Phyto-64-153.

Germination of Polyporus dryophilus basidiospores was stimulated by gaseous emanations of other fungi. The stimulation appeared to be due to carbon dioxide since its removal prevented germination, and the addition of gaseous carbon dioxide stimulated germination. The mechanism of stimulation by the supplementary CO2 did not appear to be related to a change in the pH of the medium or a reduction of other displaced atmospheric gases.

Additional keywords: wood decay, heartrot.