Sugar-induced signal transduction in plants

  • Smeekens S
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Abstract

Sugars have important signaling functions throughout all stages of the plant’s life cycle. This review presents our current understanding of the different mechanisms of sugar sensing and sugar-induced signal transduction, including the ex- perimental approaches used. In plants separate sensing systems are present for hexose and sucrose. Hexokinase-dependent and -independent hexose sensing systems can fur- ther be distinguished. There has been progress in understanding the signal transduction cascade by analyzing the function of theSNF1kinase complex and the regulatoryPRL1 protein. The role of sugar signaling in seed development and in seed germination is discussed, especially with respect to the various mechanisms by which sugar signaling controls gene expression. Finally, recent literature on interacting signal transduction cascades is discussed, with particular emphasis on the ethylene and ABA signal trans- duction pathways

Author-supplied keywords

  • all stages of
  • arabidopsis
  • current understanding of the
  • different
  • hexokinase
  • hexose sensing
  • important signaling functions throughout
  • phytohormones
  • s abstract sugars have
  • s life cycle
  • signal transduction
  • sucrose sensing
  • the plant
  • this review presents our

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Authors

  • Sjef Smeekens

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