Effects of Gibberellic Acid on Ribonucleic Acid Synthesis in Barley Aleurone

  • J. A. Zwar
  • J. V. Jacobsen
Conference paper


The induction of α-amylase synthesis in endosperm halves of barley seeds by gibberellic acid (GA) was discovered by Paleg (1960) and by Yomo (1960). Later Paleg (1964) and Varner (1964) showed that the site of enzyme production was the aleurone layer and that the GA effect could be obtained in aleurone layers isolated from the starchy endosperm. Filner and Varner (1967) found that α-amylase was synthesized de novo and the inhibitor studies of Varner et al. (1965) suggested the dependence of enzyme synthesis on RNA synthesis. The incorporation studies of Chandra and Varner (1965) supported this.


Gibberellic Acid Aleurone Layer Starchy Endosperm Barley Endosperm Nucleic Acid Level 
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Copyright information

© Springer-Verlag Berlin · Heidelberg 1972

Authors and Affiliations

  • J. A. Zwar
    • 1
  • J. V. Jacobsen
    • 1
  1. 1.Division of Plant IndustryC.S.I.R.O.CanberraAustralia

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