You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Biological Species of Armillaria mellea in North America
James B. Anderson and Robert C. Ullrich
Vol. 71, No. 2 (Mar. - Apr., 1979), pp. 402-414
Published by: Mycological Society of America
Stable URL: http://www.jstor.org/stable/3759160
Page Count: 13
You can always find the topics here!Topics: Fruiting bodies, Species, Armillaria, Diploidy, Heterothallism, Parasite hosts, Mycelium, Plants, Genetics, Water distillation
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Armillaria mellea consists of at least ten reproductively isolated groups, the equivalent of "biological species." Each biological species possesses bifactorial heterothallism with compatibility discernible by the gross mycelial morphology of paired monosporous isolates rather than the presence or absence of clamp connections and dikaryotic cells. Monosporous testers were obtained from 97 fruiting bodies in North America. Pairings of testers from different fruiting bodies indicated that each isolate belongs to one and only one intersterile group, i.e., intersterility between groups is complete. Nutritional selection applied to confronted auxotrophic strains from two of the biological species revealed no prototrophy (genetic complementation) between the strains of these groups, whereas prototrophy was revealed by the same method within groups. Members of several of the biological species are distributed widely in North America. Isolates may be collected from a broad range of host species or also as saprophytes. The 10 biological species are not clearly distinguishable by unique geographical ranges or substrate specificities. Armillaria mellea is considered to be a complex of morphologically distinct species. This study shows that the taxon is divided into genetically isolated distinct biological species.
Mycologia © 1979 Mycological Society of America