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 Scijournal_title
Trends in plant scienceauthors
Stael S,Kmiecik P,Willems P,Van Der Kelen K,Coll NS,Teige M,Van Breusegem Fdoi
10.1016/j.tplants.2014.10.002subject
Has Abstractpub_date
2015-01-01 00:00:00pages
3-11issue
1eissn
1360-1385issn
1878-4372pii
S1360-1385(14)00250-7journal_volume
20pub_type
杂志文章abstract::Ultraviolet-B (UV-B) light suppresses hypocotyl elongation. Although UV-B photo-perception mechanisms have been well investigated, the signaling events from UV-B photoreceptor to downstream transcription are largely unknown. Two recent papers illustrate that the UV-B photoreceptor directly inhibits its interacting tra...
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