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Dominant mutations at Cer-yy change barley spike wax into leaf blade wax

Carlsberg Research Communications, ISSN: 0105-1938, Vol: 47, Issue: 1, Page: 29-43
1982
  • 16
    Citations
  • 0
    Usage
  • 9
    Captures
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Metrics Details

  • Citations
    16
    • Citation Indexes
      16
  • Captures
    9

Article Description

Seventeen mutations resulting in an apparent loss of the epicuticular wax on barley spikes have been shown by complementation, test cross and F analyses to be dominantly inherited alterations of the Cer-yy gene. The chemical composition determined by the four alleles 966, 968, 975 and 984 differs from that determined by the wild type in that none of the β-ketoacyl derived lipids (β-diketones, hydroxy-β-diketones and esters containing alkan-2-ols) are synthesized while the composition of the other wax lipids (alkanes, primary alcohols, aldehydes, esters containing alkan-1-ols and free acids) is markedly altered toward that characteristic of leaf blade waxes. We suggest that the Cer-yy gene determines a regulatory component which upon mutation activates the gene(s) in the spike for the leaf blade acyl elongase system and at the same time represses the spike acyl and β-ketoacyl elongase systems. © 1982 Carlsberg Laboratory.

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