Biologia Plantarum

, 26:405 | Cite as

Inhibition by amino acids of cytokinin-stimulated betacyanin synthesis inAmaranthus caudatus

  • J. Challice
Original Papers


A number of amino acids have been tested for their ability to inhibit the cytokinininduced synthesis of betacyanin inAmaranthus caudatus cotyledons. Under the conditions employed there was not any serious inhibition of pigment synthesis at amino acid concentrations belowca. 20 μg ml-1. Amino acids such as methionine, γ-aminobutyric acid and leucine did not give rise to serious inhibition belowca. 200 μg ml-1. At amino acid concentrations ofca. 2000 μg ml-1, inhibitions of pigment synthesis was in all instances complete.


Amino Acid Concentration Phloridzin Pigment Synthesis Amino Acid Inhibitor Ashton Research Station 
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Copyright information

© Academia 1984

Authors and Affiliations

  • J. Challice
    • 1
  1. 1.Long Ashton Research StationUniversity of BristolBristolEngland

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