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Numbers and distribution of individuals and mating type alleles in populations of Coriolus versicolor

Published online by Cambridge University Press:  14 April 2009

E. N. D. Williams  and
N. K. Todd
E. N. D. Williams
Affiliation:
Department of Biological Sciences, University of Exeter, Washington Singer Laboratories, Perry Road, Exeter, Devon, EX4 4QG, U.K.
N. K. Todd
Affiliation:
Department of Biological Sciences, University of Exeter, Washington Singer Laboratories, Perry Road, Exeter, Devon, EX4 4QG, U.K.
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A natural population of the tetrapolar fungus Coriolus versicolor (L. ex Fr.) Quel, in a small woodland was observed over 3 years. Dikaryotic members of the population were identified using intraspecific antagonism and mating type markers. Records were kept of the distribution, longevity and fruiting behaviour of 44 individuals. Zone lines between individuals were found to remain constant in position throughout the study, but rates of decay and fruiting times varied between dikaryons and did not seem related to resource size. Detailed maps of the genetic structure of the populations in two stumps are presented. In general the results indicated thousands of alleles at both mating type loci. Repeated occurrences of alleles were very rare, when the data were interpreted rigorously in terms of the probable origins of the nuclei found in individuals. This approach was also applied critically to some published data. Comparisons were made between alleles found in local and more widely gathered samples, and led to estimation of worldwide frequencies but it is concluded that such exercises are of limited value.

Type
Research Article
Information
Genetics Research , Volume 46 , Issue 3 , December 1985 , pp. 251 - 262
Copyright
Copyright © Cambridge University Press 1985

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