Stability of Hor1-specific YAC-clones and physical mapping of Hor1-loci in harley

W. Michalek, M. Kleine, H. Dargatz, G. Wenzel, A. Jahoor

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The hordeins are the major class of storage proteins in barley and are encoded by multigene families. Two YAC-clones specific for the C-hordein-coding Hor1-locus of barley (Hordeum vulgate L.) were selected. The clones were constructed with DNA from the cultivars 'Franka' and 'Hockey' and have insert sizes of 330 kb and 350 kb, respectively. Performing partial digestions and hybridizations with vector-specific probes, a restriction analysis was conducted using restriction enzymes with a 8-bp recognition sequence. Both clones cover the complete region of the Hor1-locus, but exhibit a different pattern of restriction sites reflecting the polymorphic nature of the locus on the scale of long-range restriction mapping. The maximal extent of the regions homologous to the Hor1-specific probe, pBSC5, was 105 kb in the 'Hockey'-derived YAC and 190 kb in the yeast artificial chromosome constructed with 'Franka'-DNA. Furthermore the high degree of instability observed with the Hor1-specific YAC-clones is discussed in conjunction with the structure of the Hor1-locus.

Original languageEnglish
Pages (from-to)369-374
Number of pages6
JournalTheoretical and Applied Genetics
Volume95
Issue number3
DOIs
StatePublished - Aug 1997

Keywords

  • Barley
  • C-hordeins
  • Physical mapping
  • Yeast artificial chromosomes (YAC)

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