Plant innate immunity--sunny side up?

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

Organisation(s)
Department of Biochemistry and Cell Biology
External organisation(s)
Center for Research in Agricultural Genomics (CRAG), Vlaams Instituut voor Biotechnologie, Ghent University , Universität für Bodenkultur Wien
Journal
Trends in Plant Science
Volume
20
Pages
3-11
No. of pages
9
ISSN
1360-1385
DOI
https://doi.org/10.1016/j.tplants.2014.10.002
Publication date
01-2015
Peer reviewed
Yes
Austrian Fields of Science 2012
106031 Plant physiology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/plant-innate-immunitysunny-side-up(9be9d819-e5eb-4b99-a056-7020ee5f2744).html