Nitric oxide as a signal in plants

Curr Opin Plant Biol. 1999 Oct;2(5):369-74. doi: 10.1016/s1369-5266(99)00007-2.


Molecular, genetic and biochemical studies have identified key players in the signaling pathways regulating growth and development, as well as defense responses in plants. Recently, nitric oxide (NO) - the versatile and powerful effector of animal redox-regulated signaling and immune responses - was shown to mediate plant defense responses against pathogens. Interestingly, several key components involved in NO-mediated signaling in animals also appear to be operative in plants.

Publication types

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

MeSH terms

  • Animals
  • Models, Chemical
  • Nitric Oxide / physiology*
  • Nitric Oxide Synthase / metabolism
  • Plant Physiological Phenomena*
  • Second Messenger Systems / physiology
  • Signal Transduction / physiology*


  • Nitric Oxide
  • Nitric Oxide Synthase