Summary
At least eight methF55 suppressor loci have been identified (Tables 1-4). All suppressors tested were effective towards methA, methB and methG mutants, while some of them were effective also towards methD10, methH2 and probably methE53 mutants (Tables 5 and 6).
In the progenies of non-leaky methionine mutants leaky segregants were found (Table 7).
Double mutant strains carrying methE31 and methA34 or methF55 or methD10 mutants reverted with approximately the same frequencies as did strains carrying a single methE31 mutant (Table 8).
The possible implications of these findings, together with the other data on methionine mutants and their suppressors in A. nidulans, are discussed.
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Communicated by F. Kaudewitz
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Putrament, A., Guzewska, J. & Pieniazek, D. Further genetic characteristics of methionine mutants and their suppressors in Aspergillus nidulans . Molec. Gen. Genet. 109, 209–218 (1970). https://doi.org/10.1007/BF00267009
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DOI: https://doi.org/10.1007/BF00267009