The role of abscisic acid in plant-pathogen interactions

Curr Opin Plant Biol. 2005 Aug;8(4):409-14. doi: 10.1016/j.pbi.2005.05.015.


The effect of the abiotic stress hormone abscisic acid on plant disease resistance is a neglected field of research. With few exceptions, abscisic acid has been considered a negative regulator of disease resistance. This negative effect appears to be due to the interference of abscisic acid with biotic stress signaling that is regulated by salicylic acid, jasmonic acid and ethylene, and to an additional effect of ABA on shared components of stress signaling. However, recent research shows that abscisic acid can also be implicated in increasing the resistance of plants towards pathogens via its positive effect on callose deposition.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Abscisic Acid / metabolism
  • Abscisic Acid / physiology*
  • Oxidative Stress
  • Plant Diseases / microbiology*
  • Plants / immunology*
  • Plants / microbiology
  • Signal Transduction


  • Abscisic Acid