Self-fructification associated with genetic instability in Coprinus radiatus.
In the basidiomycete Coprinus radiatus, crosses gave rise with a high frequency to 2 types of self-fructifying progeny. The first type showed monokaryotic fruiting due to the occurrence of a mutation associated with the B1 incompatibility factor. The second type showed fruiting due to the presence of the 2 parental genomes in the original spore. Mutability and abnormal development of the life cycle are responsible for self-fructification. These features occurred in progeny of related strains harbouring a genetic instability located at the Nic-2 locus. High mutability, disturbance of the development of the life cycle and genetic instability are traits which resemble hybrid dysgenesis in Drosophila and meiotic dysgenesis in Phycomyces.
Ozier-Kalogeropoulos
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Centre de Génétique Moléculaire du C.N.R.S., Université Pierre et Marie Curie, Gif-sur-Yvette, France.
Guillemet
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E
D000363:Agaricales / Q000235:genetics*; D003302:Coprinus / Q000235:genetics* / Q000254:growth & development; D009154:Mutation; D009525:Niacin / Q000502:physiology; D010641:Phenotype; D012098:Reproduction; D013172:Spores, Fungal
D009525:Niacin