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Updated: Jun 27, 2026

Monitoring Plant Hormones During Stress Responses
Published on: June 15, 2009
Role of plant hormones in plant defence responses
Rajendra Bari1, Jonathan D G Jones
1The Sainsbury Laboratory, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK. rajendra.bari@tsl.ac.uk
Abstract:
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.
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