1887

Abstract

Certain mycelia of the ascomycete show two morphological differentiated states, rings and sectors, which are cytoplasmically transmissible. Two nuclear loci and , appear to be involved in the control of these differentiated states. Mutations in the A region either prevent ring formation and the synthesis of the corresponding infectious factor (type ) or modify ring expression (type 58). Using forced heterokaryons, it was demonstrated that corresponds to a single gene which exists in three allelic forms, and 58.

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1980-02-01
2021-08-06
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