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Formal and physiological genetics of ascospore colour in Aspergillus nidulans

Published online by Cambridge University Press:  14 April 2009

D. Apirion
D. Apirion
Affiliation:
Department of Genetics, The University, Glasgow
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By nitrous acid or UV treatment ascospore colour mutants of two kinds, blue and colourless, were obtained in Aspergillus nidulans (wild-type has red ascospores). Four blue mutants were located in linkage group II within 0·5 unit of one another (locus symbol: b11). Of the colourless mutants, four were located in linkage group I within one unit of one another (locus symbol: c16), and one in linkage group IV (locus symbol: c14). In diploids the mutants were recessive. Colourless was epistatic to blue.

In crosses these characters behaved as ‘non-autonomous’ both in the ascospores and in the asci; all the ascospores of the asci in one perithecium as well as the perithecium wall were of the same colour. In crosses between strains with blue perithecia and strains with colourless perithecia, red, blue and colourless perithecia were found; each type included both crossed and selfed perithecia. Red selfed perithecia were of either parental genotype but blue or colourless selfed perithecia always had the corresponding genotype.

The phenotype of the perithecium (perithecial wall and ascospores) is considered to be determined by the homo- or heterokaryotic constitution of the protoperi-thecium which gave origin to it.

Type
Research Article
Information
Genetics Research , Volume 4 , Issue 2 , July 1963 , pp. 276 - 283
Copyright
Copyright © Cambridge University Press 1963

References

REFERENCES

Elliott, C. G. (1960). The cytology of Aspergillus nidulans. Genet. Res. 1, 462–467.CrossRefGoogle Scholar
Ephrussi, B. (1938). Aspects of the physiology of gene action. Amer. Nat. 72, 5–23.CrossRefGoogle Scholar
Forbes, E. (1959). Use of mitotic segregation for assigning genes to linkage groups in Aspergillus nidulans. Heredity, 13, 67–80.CrossRefGoogle Scholar
Käfer, E. (1958). An 8-chromosome map of Aspergillus nidulans. Advanc. Genet. 9, 105–145.CrossRefGoogle ScholarPubMed
Lissouba, P. (1961). Ph.D. Thesis, Paris University.Google Scholar
Lissouba, P. & Rizet, G. (1960). Sur l'existence d'une unité génétique polarisée ne subisant que des échange non réciproques. C. R. Acad. Sci., Pari., 250, 3408–3410.Google Scholar
Martens, P. (1946). Cycle de dévelopment et sexualité des ascomycètes. Cellule, 50, 125–310.Google Scholar
Pontecorvo, G. & Käfer, E. (1958). Genetic analysis based on mitotic recombination. Advanc. Genet. 9, 71–104.CrossRefGoogle ScholarPubMed
Pontecorvo, G., Roper, J. A., Hemmons, L. M., Macdonald, K. D. & Bufton, A. W. J. (1953). The genetics of Aspergillus nidulans. Advanc. Genet. 5, 141–238.CrossRefGoogle ScholarPubMed
Rizet, G., Lefort, C., Engelmann, N., Lissouba, P. & Mousseau, J. (1960). Sur un ascomycète intéressant pour l'étude de certains aspects du problème de la structure du gène. C. R. Acad. Sci., Pari., 250, 2050–2052.Google Scholar
Roper, J. A. (1952). Production of heterozygous diploids in filamentous fungi. Experientia, 8, 14–15.CrossRefGoogle ScholarPubMed
Siddiqi, O. H. (1962). Mutagenic action of nitrous acid on Aspergillus nidulans. Genet. Res. 3, 303–314.CrossRefGoogle Scholar
Sturtevant, A. H. (1920). The vermilion gene and gynandromorphism. Proc. Soc. exp. Biol., N.Y., 17, 70–71.CrossRefGoogle Scholar