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Keywords:

  • catabolites;
  • chlorophyll;
  • plant pigments;
  • tetrapyrroles
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Coloured chlorophyll catabolites: Yellow and red tetrapyrroles are formed when the colourless ‘nonfluorescent’ chlorophyll catabolites decompose in the presence of light and air. Such coloured pigments derived from the breakdown of chlorophyll may also occur in senescent leaves, in which they may contribute to the fascinating ‘fall’ colours.