In the above articles, we have presented our data in terms of previously published MDH isozyme and gene designations. However, since our evidence supports the idea that there are at least three mitochondrial and two soluble Mdh loci, we propose that the locus symbols now be revised to be consistent with the current conventions of maize genetics (MNL 49:3-4).
Listed below is our proposed nomenclature juxtaposed with the corresponding
designations used by other investigators. We have attempted to make this
transition as easy as possible by merely changing the alphabetical designations
of Goodman et al. to numerical ones. Since the MDH system involves so many
loci contributing differentially to the isozyme pattern, we feel that it
is important to always include the number 1 in the Mdh1 symbol. One could
incorporate the laboratory symbols in the allele designations, e.g. Mdh3-C18.
Additional loci, as discovered (whether soluble, mitochondrial or glyoxysomal)
would simply be assigned the next number. Finally, the modifier locus has
been named the "modifier of mitochondrial MDH" and given the symbol, mmm.
|Proposed Conventional Symbols||Goodman et al. Laboratory Designations||Yang et al. Nomenclature|
|Mdh2 (on chr. 6)||MdhB||mdh2|
|Mdh3 (on chr. 3)||MdhC||-----|
Kathleen J. Newton
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