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PubMed1974

Protoplasmic incompatibility and female organ formation in Podospora anserina: Properties of mutations abolishing both processes.

A genetic block, effective only with the addition of mutations in two genes, suppresses both the incompatibility process in strain confrontation ("barrage") and the formation of female organs. Investigation on this block lead us to propose that it operates at the ribosomal level and prevents the translation of the messenger of a proteolytic enzyme, a postulated early protein in protoperithecia differenciation.

Ascomycota↗
PubMed1977

The phenoloxidases of the ascomycete Podospora anserina. XIII. Action and interaction of genes controlling the formation of laccase.

1. Eight mutants were isolated following mutagen treatment which are deficient in laccase formation. Seven of these had a pleiotropic effect and exhibited defects in growth rate and in mycelial and sexual morphology. 2. By means of tetrad analysis the mutations were assigned to 6 loci. Three mutations were in the incolora locus, the others were non-allelic. Only two of these loci were closely linked. 3. All genes exhibit numerous interactions. These concern the morphological expression of the laccase genes and also the laccase spectra. 4. The mutants could be separated into four classes on the basis of the amount and type of laccase produced. 5. Five of the loci studied appear to be structural genes because mutations alters the physical properties of the laccase protein. The sixth gene has a regulatory role.

Ascomycota↗