Hostname: page-component-848d4c4894-xm8r8 Total loading time: 0 Render date: 2024-06-28T15:33:09.019Z Has data issue: false hasContentIssue false
  • English
  • Français

Somatic recombination in the dikaryon of Coprinus lagopus

Published online by Cambridge University Press:  14 April 2009

J. W. Cowan  and
D. Lewis
J. W. Cowan
Affiliation:
Department of Botany, University College London
D. Lewis
Affiliation:
Department of Botany, University College London

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A technique based upon auxotrophic mutants and recessive suppressor genes has been used to select for somatic recombinants in the dikaryon of Coprinus lagopus. Both haploid and disomic nuclei with a reassortment of chromosomes from the two component nuclei of the dikaryon were found. The presence of the disomics indicates that the recombination process is one of fusion of nuclei with a gradual haploidization by loss of chromosomes at mitotic divisions. An extensive test for crossing-over in the A chromosome failed to give an unambiguous crossover recombinant, but it produced a stock with a normal A chromosome and a fragment of the chromosome.

Type
Research Article
Information
Genetics Research , Volume 7 , Issue 2 , April 1966 , pp. 235 - 244
Copyright
Copyright © Cambridge University Press 1966

References

REFERENCES

Casselton, L. A. (1964). The production, behaviour and genetics of diploids of Coprinus lagopus. Ph.D. Thesis, University of London.Google Scholar
Casselton, L. A. (1965). The production and behaviour of diploids of Coprinus lagopus. Genet. Res. 6, 190–208.CrossRefGoogle ScholarPubMed
Crowe, L. K. (1960). The exchange of genes between nuclei of a dikaryon. Heredity, Lond. 15, 397–405.CrossRefGoogle Scholar
Ellingboe, A. H. (1964). Somatic recombination in dikaryon K of Schizophyllum commune. Genetics, 49, 247–251.Google Scholar
Ellingboe, A. E. & Raper, J. R. (1962). Somatic recombination in Schizophyllum commune. Genetics, 47, 85–98.CrossRefGoogle ScholarPubMed
Käfer, E. (1958). An eight chromosome map of Aspergillus nidulans. Adv. Genet. 9, 105–145.Google Scholar
Lewis, D. (1961). Genetical analysis of methionine suppressors in Coprinus. Genet. Res. 2, 141–155.CrossRefGoogle Scholar
Papazian, H. P. (1954). Exchanges of incompatibility factors between the nuclei of a dikaryon. Science, N.Y. 119, 691–693.CrossRefGoogle ScholarPubMed
Parag, Y. (1962). Studies on somatic recombination in dikaryons of Schizophyllum commune. Heredity, Lond. 17, 305–318.CrossRefGoogle Scholar
Pontecorvo, G. & Käfer, E. (1958). Genetical analysis based on mitotic recombination. Adv. Genet. 9, 71–104.CrossRefGoogle ScholarPubMed
Quintantlha, A. (1938). Troisième contribution a 1'étude génétique du phénomène de Buller. C. r. Séanc. Soc. Biol. 129, 730–734.Google Scholar
Rapes, J. R. & Oettinger, M. T. (1962). Anomalous segregation of incompatibility factors in Schizophyllum commune. Revta Biol. Lisb. 3, 205–221.Google Scholar
Roper, J. A. (1952). Production of heterozygous diploids in filamentous fungi. Experientia, 8, 14–15.CrossRefGoogle ScholarPubMed
Swiezynski, K. M. (1962). Analysis of an incompatible di-mon mating in Coprinus lagopus. Acta Soc. Bot. Pol. 31, 169–184.CrossRefGoogle Scholar
Swiezynski, K. M. (1963). Somatic recombination of two linkage groups in Coprinus lagopus. Genet. pol. 4, 21–36.Google Scholar