Activity of both nuclei of a dikaryotic basiomycete mycelium

Keithfungi keithfungi at
Tue Dec 7 13:37:34 EST 1999

Dear James:

A long time ago I showed that both nuclei participate in the maintenance of the
dikaryotic phenotype, and that there are gene interactions involving both
nuclei. (Genetics, 113?, 1985 Klein and Deppe)
Your gut feeling is probably wrong, for while both nuclei must have active
copies of the houskeeping genes, the genes specific for dikaryons that are
turned on only in dikaryons probably get turned on in both. Even greater
evidence is that complementation between non-allelic mutations is a "normal"
phenomenon in all basidiomycetes studied and would demand that even the
houskeeping genes be transcriptionally active in both nuclei.
Keith Klein
Minnesota State University
Mankato, MN 56002
keith.klein at

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