Calcium in plant defence-signalling pathways

Authors

  • David Lecourieux,

    1. UMR INRA 1088/CNRS 5184/Université de Bourgogne, Plante-Microbe-Environnement, 17 rue de Sully, BP 86510, 21065 Dijon cedex, France
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  • Raoul Ranjeva,

    1. UMR CNRS 5546 Université Paul Sabatier, Signaux et Messages Cellulaires chez les Végétaux, Pôle de Biotechnologies Végétales, 24 chemin de Borde Rouge, BP 17, Auzeville, 31326 Castanet-Tolosan, France;
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  • Alain Pugin

    1. UMR INRA 1088/CNRS 5184/Université de Bourgogne, Plante-Microbe-Environnement, 17 rue de Sully, BP 86510, 21065 Dijon cedex, France
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Author for correspondence: Alain Pugin Tel: +33 03 80 69 31 77 Fax: +33 03 80 69 32 26 Email: pugin@dijon.inra.fr

Abstract

Contents

  • I. Introduction 250
  • II. Increases in free cellular [Ca2+]: an early and key event in plant defence signalling 251
  • III. Relationships between [Ca2+]cyt increases and defence-signalling pathways 256
  • IV. Calcium targets involved in plant defence reactions 258
  • V. Concluding remarks 262
  • Acknowledgements 263

  • References 263

Summary

In plant cells, the calcium ion is a ubiquitous intracellular second messenger involved in numerous signalling pathways. Variations in the cytosolic concentration of Ca2+ ([Ca2+]cyt) couple a large array of signals and responses. Here we concentrate on calcium signalling in plant defence responses, particularly on the generation of the calcium signal and downstream calcium-dependent events participating in the establishment of defence responses with special reference to calcium-binding proteins.

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