MUTATIONAL ANALYSIS OF NATURAL ALLELES IN AND AFFECTING THE B INCOMPATIBILITY FACTOR OF SCHIZOPHYLLUM

1 Department of Microbiology, Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Israel

Primary mutations in the alleles alpha1 and ß7 of the B incompatibility factor of Schizophyllum were induced with X rays. An additional mutation unlinked to the B factor and affecting its regulatory function was detected. This mutation is effective in monokaryons with most B-factor specificities. The spectra of induced mutations in different alleles is discussed in reference to a polarity in the expression of the recognition function and the regulatory function by each locus of the B incompatibility factor.

Submitted on May 2, 1979




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