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- Title
In vitro measurements of the competitive interactions between two saprobic basidiomycetes on Typha latifolia.
- Authors
Schulz, Michael J.; Cahill Jr., James F.; Currah, Randolph S.
- Abstract
Psathyrella typhae (Kalchbr.) Pearson & Dennis forms small basidiomata (mushrooms) and Sclerotium hydrophilum Saccardo in Rothert numerous minute sclerotia at the base of senescent shoots of Typha latifolia L. To assess how the two might compete in nature, isolates of these fungi were paired on autoclaved leaf segments of T. latifolia and incubated at 15 and 25 °C. The relative abundance of each species in the segments was determined by macerating the leaf tissues and then transferring fragments of macerate to microplates containing two types of media: one conclusively demonstrated the presence of P. typhae while the other demonstrated the presence of S. hydrophilum. Relative numbers of microplate wells showing positive reactions for each species on each medium indicated the proportion of the segment occupied following single and paired inoculations. These data demonstrated that competition was asymmetric, with P. typhae the stronger competitor at both temperatures, and uninhibited by the presence of S. hydrophilum. In contrast, S. hydrophilum was competitively excluded by P. typhae.
- Subjects
COMPETITION (Biology); BASIDIOMYCETES; TYPHA latifolia; FUNGAL communities; FUNGI; WETLAND ecology; MUSHROOMS; SCLEROTIUM (Genus); WEEDS
- Publication
Canadian Journal of Botany, 2005, Vol 83, Issue 11, p1523
- ISSN
0008-4026
- Publication type
Article
- DOI
10.1139/b05-155