Plant innate immunity--sunny side up?

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.

journal_name

Trends Plant Sci

journal_title

Trends in plant science

authors

Stael S,Kmiecik P,Willems P,Van Der Kelen K,Coll NS,Teige M,Van Breusegem F

doi

10.1016/j.tplants.2014.10.002

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

3-11

issue

1

eissn

1360-1385

issn

1878-4372

pii

S1360-1385(14)00250-7

journal_volume

20

pub_type

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