Biochemical Genetics

, Volume 25, Issue 3, pp 309–325

Characterization and genetic control of the prolamins of Haynaldia villosa: Relationship to cultivated species of the Triticeae (rye, wheat, and barley)

  • P. R. Shewry
  • S. Parmar
  • D. J. C. Pappin
Article

DOI: 10.1007/BF00499323

Cite this article as:
Shewry, P.R., Parmar, S. & Pappin, D.J.C. Biochem Genet (1987) 25: 309. doi:10.1007/BF00499323

Abstract

Haynaldia villosa is a wild grass of the tribe Triticeae, other members of which include the cultivated cereals barley, rye, and wheat. We have made an electrophoretic and chemical characterization of the major seed storage proteins (prolamins) of H. villosa and determined the chromosomal locations of the structural genes for some components using the available wheat/H. villosa chromosome addition lines. As in wheat, barley, and rye, groups of high molecular weight (polymeric), sulfur-poor (monomeric), and sulfur-rich (monomeric γ-type and polymeric) prolamins can be recognized. Most of the components are encoded by genes on chromosome 1 Ha, which is homologous with the chromosomes controlling many of the prolamins in wheat and rye and all of those in barley. In addition, H. villosa also contains α-type sulfur-rich prolamins, previously detected only in wheat and its close relatives. These may be encoded by genes on chromosome 6Ha, which is homologous with the group 6 chromosomes that control the α-type gliadins of wheat. Despite the proposed close relationship between Haynaldia and ryes, no evidence was found for the presence of proteins closely related to the Mr75,000 γ-secalins which are characteristic of wild and cultivated species of Secale.

Key words

cereals seed proteins amino acid sequences genetics homology evolution 

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • P. R. Shewry
    • 1
  • S. Parmar
    • 1
  • D. J. C. Pappin
    • 2
  1. 1.Biochemistry DepartmentRothamsted Experimental StationHarpendenUK
  2. 2.Department of BiochemistryUniversity of LeedsLeedsUK

Personalised recommendations