Molecular and General Genetics MGG

, Volume 248, Issue 3, pp 253–259 | Cite as

Production of waxy (amylose-free) wheats

  • Toshiki Nakamura
  • Makoto Yamamori
  • Hisashi Hirano
  • Soh Hidaka
  • Tukasa Nagamine
Original Paper


The Waxy (Wx) protein has been identified as granule-bound starch synthase (GBSS; EC 24.1.21), which is involved in amylose synthesis in plants. Although common wheat (Triticum aestivum L.) has three Wx proteins, “partial waxy mutants” lacking one or two of the three proteins have been found. Using such partial waxy mutants, tetra- and hexaploid waxy mutants with endosperms that are stained red-brown by iodine were produced. Both mutants showed loss of Wx protein and amylose. This is the first demonstration of genetic modification of wheat starch.

Key words

Wheat Waxy Amylose Wx protein Mutant 


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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Toshiki Nakamura
    • 1
  • Makoto Yamamori
    • 2
  • Hisashi Hirano
    • 3
  • Soh Hidaka
    • 1
  • Tukasa Nagamine
    • 2
  1. 1.Tohoku National Agricultural Experiment StationMorioka, IwateJapan
  2. 2.Japan International Research Center for Agricultural Sciences, Okinawa BranchIshigaki, OkinawaJapan
  3. 3.National Institute of Agrobiological ResourcesTsukuba, IbarakiJapan

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