COMPLEMENTATION AND NONCOMPLEMENTATION AMONG NONALLELIC MUTATIONS ALTERING DEVELOPMENT IN SCHIZOPHYLLUM COMMUNE

1 Department of Genetics and Cell Biology, University of Minnesota, St. Paul, Minnesota 55101, and Department of Biology, Hamline University, St. Paul, Minnesota 55104
2 Department of Genetics and Cell Biology, University of Minnesota, St. Paul, Minnesota 55101

Mutations resistant to compounds that alter the development of Schizophyllum commune (cyclic adenosine monophosphate, caffeine and imidazole) were selected. These mutations defined four genes, car (cAMP resistance), caf-1 and caf-2 (caffeine resistance) and imr (imidazole resistance). The mutations were found to be noncomplementing in certain pairs when tested against each other and against two previously isolated developmental mutations, B-con and sep (septateless), in fully compatible, forced heterokaryons. The pattern of complementation in fully compatible diploids showed noncomplementation only between allelic mutations, except for one case, imr vs. car.

Submitted on January 24, 1984
Accepted on October 5, 1984




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