Plant Molecular Biology

, Volume 69, Issue 4, pp 473–488

Role of plant hormones in plant defence responses


DOI: 10.1007/s11103-008-9435-0

Cite this article as:
Bari, R. & Jones, J.D.G. Plant Mol Biol (2009) 69: 473. doi:10.1007/s11103-008-9435-0


Plant hormones play important roles in regulating developmental processes and signaling networks involved in plant responses to a wide range of biotic and abiotic stresses. Significant progress has been made in identifying the key components and understanding the role of salicylic acid (SA), jasmonates (JA) and ethylene (ET) in plant responses to biotic stresses. Recent studies indicate that other hormones such as abscisic acid (ABA), auxin, gibberellic acid (GA), cytokinin (CK), brassinosteroids (BR) and peptide hormones are also implicated in plant defence signaling pathways but their role in plant defence is less well studied. Here, we review recent advances made in understanding the role of these hormones in modulating plant defence responses against various diseases and pests.


HormonesPlant defencePathogenVirulenceSignalingPeptideBiotrophsNecrotrophs

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.The Sainsbury LaboratoryJohn Innes CentreNorwichUK