Genetic analysis of alcohol dehydrogenase isozymes in pearl millet (Pennisetum typhoides)

Pearl millet (Pennisetum typhoides) produces three ADH isozymes, sets I, II, and III, with set III being expressed only in anaerobically treated seeds of seedlings. Variant strains have been identified which produce ADH isozymes with altered electrophoretic mobilities for sets I and II but not for s...

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Bibliographic Details
Published in:Biochemical genetics 1979-06, Vol.17 (5-6), p.537-552
Main Authors: Banuett-Bourrillon, F, Hague, D R
Format: Article
Language:English
Subjects:
Alcohol Oxidoreductases - genetics
Crosses, Genetic
Edible Grain - enzymology
Electrophoresis, Starch Gel
Genes
Genotype
Isoenzymes - genetics
Panicum - enzymology
Phenotype
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Summary:Pearl millet (Pennisetum typhoides) produces three ADH isozymes, sets I, II, and III, with set III being expressed only in anaerobically treated seeds of seedlings. Variant strains have been identified which produce ADH isozymes with altered electrophoretic mobilities for sets I and II but not for set III activity. Based on genetic analysis of these variants and on dissociation-reassociation experiments, we propose that the three ADH isozymes are dimers of subunits coded by two structural genes, Adh1 and Adh2, with set I being a homodimer specified by Adh1, set III a homodimer specified by Adh2, and set II a heterodimer formed between the products of Adh1 and Adh2.
ISSN:0006-2928
1573-4927
DOI:10.1007/BF00498889