Molecular mechanisms underlying plant memory in JA-mediated defence responses

Ivan GÁlis, Emmanuel Gaquerel, Shree P. Pandey, Ian T. Baldwin

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

Plants must respond to biotic and abiotic challenges to optimize their Darwinian fitness in nature. Many of these challenges occur repeatedly during a plant's lifetime, and their sequence and timing can profoundly influence the fitness outcome of a plant's response. The ability to perceive, store and recall previous stressful events is likely useful for efficient, rapid and cost-effective responses, but we know very little about the mechanisms involved. Using jasmonate-elicited anti-herbivore defence responses as an example, we consider how 'memories' of previous attacks could be created in (1) the biosynthetic processes involved in the generation of the oxylipin bursts elicited by herbivore attacks; (2) the perception of oxylipins and their transduction into cellular events by transcription factors and transcriptional activators; and (3) the role of small RNAs in the formation of long-term stress imprints in plants.

Original languageEnglish
Pages (from-to)617-627
Number of pages11
JournalPlant, Cell and Environment
Volume32
Issue number6
DOIs
Publication statusPublished - Jun 1 2009
Externally publishedYes

Keywords

  • Herbivory
  • Insect
  • JAZ repressors
  • Jasmonate (JA)
  • Memory
  • Plant defence
  • Plant fitness
  • Priming
  • RNA interference (RNAi)
  • Stress imprint
  • Tobacco

ASJC Scopus subject areas

  • Physiology
  • Plant Science

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