Plant innate immunity--sunny side up?

Simon Stael, Przemyslaw Kmiecik, Patrick Willems, Katrien Van Der Kelen, Nuria S Coll, Markus Teige, Frank Van Breusegem (Corresponding author)

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Reactive oxygen species (ROS)- and calcium- dependent signaling pathways play well-established roles during plant innate immunity. Chloroplasts host major biosynthetic pathways and have central roles in energy production, redox homeostasis, and retrograde signaling. However, the organelle's importance in immunity has been somehow overlooked. Recent findings suggest that the chloroplast also has an unanticipated function as a hub for ROS- and calcium-signaling that affects immunity responses at an early stage after pathogen attack. In this opinion article, we discuss a chloroplastic calcium-ROS signaling branch of plant innate immunity. We propose that this chloroplastic branch acts as a light-dependent rheostat that, through the production of ROS, influences the severity of the immune response.

Original languageEnglish
Pages (from-to)3-11
Number of pages9
JournalTrends in Plant Science
Volume20
Issue number1
DOIs
Publication statusPublished - Jan 2015

Austrian Fields of Science 2012

  • 106031 Plant physiology

Keywords

  • Calcium
  • Chloroplasts
  • Light
  • Plant Immunity
  • Reactive Oxygen Species
  • Signal Transduction
  • calcium signaling
  • pathogen-triggered immunity
  • Calcium signaling
  • Effector-triggered immunity
  • Pathogen-triggered immunity
  • Reactive oxygen species signaling
  • Pathogen
  • Chloroplast

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