Polymorphism at the Hor 1 locus of barley (Hordeum vulgare L.)

A - Papers appearing in refereed journals

Shewry, P. R., Bunce, N. A. C., Kreis, M. and Forde, B. G. 1985. Polymorphism at the Hor 1 locus of barley (Hordeum vulgare L.). Biochemical Genetics. 23 (5/6), pp. 391-404. https://doi.org/10.1007/BF00499082

AuthorsShewry, P. R., Bunce, N. A. C., Kreis, M. and Forde, B. G.

The Hor 1 locus of barley encodes a group of seed storage polypeptides called C hordein. Two-dimensional electrophoretic analysis of C-hordein fractions from six cultivars with different alleles at the Hor 1 locus showed extensive polymorphism. A total of 34 major polypeptides was mapped, with between 4 and 18 present in each cultivar. There was less variation among the same cultivars in the numbers (6 to 10) of restriction fragments of genomic DNA which hybridized to a cDNA clone related to C hordein. The total number of restriction fragments was also lower (22), and most pairs of cultivars had more restriction fragments than polypeptides in common. A total number of about 20–30 C-hordein genes per haploid genome was estimated. The results indicate that cultivars differ mainly in the extent of gene and polypeptide divergence, rather than in the degree of gene reiteration. They are consistent with the proposed origin of the multiple structural genes at the Hor 1 locus by the duplication and divergence of a single ancestral gene. 

Year of Publication1985
JournalBiochemical Genetics
Journal citation23 (5/6), pp. 391-404
Digital Object Identifier (DOI)https://doi.org/10.1007/BF00499082
Open accessPublished as non-open access
PublisherSpringer Nature

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