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Isoenzyme Polymorphism in Flowering Plants. IV. The Peroxidase Isoenzymes of Maize (Zea mays)
Author(s) -
Hamill D. E.,
Brewbaker J. L.
Publication year - 1969
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1969.tb07453.x
Subject(s) - isozyme , peroxidase , zea mays , biology , locus (genetics) , horseradish peroxidase , allele , ontogeny , plant stem , polymorphism (computer science) , botany , starch , polyacrylamide gel electrophoresis , biochemistry , enzyme , genetics , gene , agronomy
Twenty‐four peroxidase isoenzymes were identified by starch gel electrophoresis of 250 varieties of maize. Twelve of these bands corresponded in electrophoretic mobility to bands observed in commercial horseradish peroxidase. Maize tissues varied greatly in isoenzyme pattern, many tissues having a characteristic and distinguishing complement. Ontogenetic variations were observed for the leaf blade, leaf sheath, and internodes during maturation, and were related to the rates of tissue enlargement. Genetic studies of two isoenzymes, C10 and C20, indicated that they were conditioned by alleles of a single locus, here designated Px 1 .