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Hyphal fusions in the wood-rotting fungus Schizophyllum commune: I. The effects of incompatibility factors*

Published online by Cambridge University Press:  14 April 2009

Sayed S. Ahmad  and
Philip G. Miles
Sayed S. Ahmad
Affiliation:
Department of Biology, State University of New York at Buffalo, Buffalo, New York 14214, U.S.A.
Philip G. Miles
Affiliation:
Department of Biology, State University of New York at Buffalo, Buffalo, New York 14214, U.S.A.
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Effects of the incompatibility factors in Schizophyllum commune Fries on the process of hyphal fusion are described. A role for the A incompatibility factor in hyphal fusion is indicated. Matings between strains with different mating types have higher fusion frequencies than matings between strains with the same mating types. Evidence is presented that the differences in fusion frequencies are not due to genetical factors other than mating types. When two strains of different mating types are grown in the same culture plate, but separated by a cellophane membrane, the strains are altered in some unexplained manner in such a way that even matings between strains of the same mating type have a higher fusion frequency than occurs in matings between compatible strains not so treated. Matings leading to the formation of common-B and dikaryotic mycelia have comparable fusion frequencies while those leading to the formation of common-A mycelia have a far lower frequency of fusions. It has been demonstrated that high fusion frequency is associated with heterozygosity at the A locus. It is suggested that a repression–derepression mechanism involving a cell wall degrading enzyme or enzymes may be involved in the regulation of hyphal fusion.

Type
Research Article
Information
Genetics Research , Volume 15 , Issue 1 , February 1970 , pp. 19 - 28
Copyright
Copyright © Cambridge University Press 1970

References

REFERENCES

Bistis, G. N. (1956). Sexuality in Ascobolus stercorarius. I. Morphology of the Ascogonium; Plasmogamy; evidence for a sexual hormonal mechanism. Am. J. Bot. 43, 389–394.CrossRefGoogle Scholar
Bistis, G. N. (1957). Sexuality in Ascobolus stercorarius. II. Preliminary experiments on various aspects of the sexual process. Am. J. Bot. 44, 436–443.CrossRefGoogle Scholar
Buller, A. H. R. (1933). In Researches on Fungi, vol. v, pp. 1–74, Publishers Longmans Green and Co.Google Scholar
Fisher, R. A. (1948). Statistical Methods for Research Workers, Tenth Edition. Hafner, New York.Google Scholar
Fulton, I. W. (1950). Unilateral nuclear migration and the interaction of haploid mycelia in the fungus Cyathus stercoreus. Proc. Natn. Acad. Sci. U.S.A. 36, 306–312.CrossRefGoogle Scholar
Garnjobst, L. (1953). Genetic control in Neurospora crossa. Am. J. Bot. 40, 607–614.CrossRefGoogle Scholar
Garnjobst, L. (1955). Further analysis of genetic control of heterokaryosis in Neurospora crossa. Am. J. Bot. 42, 444–448.CrossRefGoogle Scholar
Leonian, L. H. (1930). Attempts to produce mixochimaera in Fusarium moniliforme. Phytopath. 20, 895–901.Google Scholar
Papazian, H. P. (1950). Physiology of the Incompatibility Factors in Schizophyllum commune. Bot. Gaz. 112, 143–163.CrossRefGoogle Scholar
Parag, Y. (1962). Studies on somatic recombination in dikaryons of Schizophyllum commune. Heredity 17, 305–318.CrossRefGoogle Scholar
Parag, Y. & Raper, J. R. (1960). Genetic recombination in a common-B cross of Schizophyllum commune. Nature, Lond. 188, 765–766.CrossRefGoogle Scholar
Pontecorvo, G. (1946). Genetic systems based on heterokaryosis. Cold Spring Harbor Symposium, vol. xi, 193.Google Scholar
Raper, C. A. & Raper, J. R. (1966). Mutations modifying sexual morphogenesis in Schizophyllum. Genetics 54, 1151–1168.CrossRefGoogle ScholarPubMed
Raper, J. R. (1951). Sexual hormones in Achlya. Am. Sci. 39, 110–120.Google Scholar
Raper, J. R. (1957). Hormones and sexuality in lower plants. Symposium Soc. Expr. Biol., XI.Google Scholar
Raper, J. R. (1966). Genetics of Sexuality in Higher Fungi. New York: Ronald Press Co.Google Scholar
Raper, J. R., Baxter, M. G. & Ellingboe, A. H. (1960). The genetic structure of incompatibility factors of Schizophyllum commune: the A factor. Proc. Natn. Acad. Sci. U.S.A. 46, 833–842.CrossRefGoogle ScholarPubMed
Raper, J. R., Baxter, M. G. & Middleton, R. B. (1958). The genetic structure of the incompatibility factors in Schizophyllum commune. Proc. Natn. Acad. Sci., U.S.A. 46, 889–900.CrossRefGoogle Scholar
Raper, J. R. & Miles, P. G. (1958). The genetics of Schizophyllum commune. Genetics 43, 530–546.CrossRefGoogle ScholarPubMed
Raper, J. R. & SanAntonio, J. P. (1954). Heterokaryotic mutagenesis in Hymenomycetes. I. Heterokaryosis in Schizophyllum commune. Am. J. Bot. 41, 69–86.CrossRefGoogle Scholar
Robak, H. (1942). Cultural studies in some wood destroying fungi Medd. Vestlandets Forstlige Fosoksstation, Bind 7, Heft 3, 1–248.Google Scholar
Takemaru, T. (1961). Genetical studies on fungi, X. The mating systems in Hymenomycetes and its genetical mechanism. Biol. J. Okayama Univ. 7, 133.Google Scholar
Wessels, J. G. H. (1965). Morphogenesis and biochemical processes in Schizophyllum commune. Wentia 13, 1–113.CrossRefGoogle Scholar
Wessels, J. G. H. & Niederpruem, D. J. (1967). Role of a cell wall glucan-degrading enzyme in mating of Schizophyllum commune. J. Bact. 94, 1594–1602.CrossRefGoogle ScholarPubMed