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Subunits of tetrameric α-amylase inhibitors of Hordeum chilense are encoded by genes located in chromosomes 4Hch and 7Hch

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Summary

Three proteins (components 1, 2, and 4) of the non-prolamin, 70% ethanol soluble fraction from the endosperm of Hordeum chilense have been identified as putative subunits of the tetrameric inhibitors active against insect α-amylases. In experiments carried out with the synthetic alloploid Tritordeum (H. chilense x Triticum turgidum conv. durum), previously described proteins from T. turgidum, designated CM2, CM3 and CM 16, have been also identified as subunits of α-amylase inhibitors. Genes for components 1 and 4 of H. chilense have been located in chromosomes 4Hch and 7Hch, based on the analysis of H. chilense-T.turgidum addition lines. Subunits of the inhibitors from wheat and from cultivated barley had been previously assigned to chromosomes of the same homoeology groups.

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References

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Correspondence to G. Salcedo.

Additional information

Communicated by G. Wenzel

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Sanchez-Monge, R., Fernandez, J.A. & Salcedo, G. Subunits of tetrameric α-amylase inhibitors of Hordeum chilense are encoded by genes located in chromosomes 4Hch and 7Hch . Theoret. Appl. Genetics 74, 811–816 (1987). https://doi.org/10.1007/BF00247561

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Key words

  • Hordeum chilense
  • Chromosomal location
  • α-Amylase inhibitors