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Systemic acquired resistance networks amplify airborne defense cues.

Nat. Commun. 10:3813 (2019)
Publ. Version/Full Text Research data DOI
Open Access Gold
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Salicylic acid (SA)-mediated innate immune responses are activated in plants perceiving volatile monoterpenes. Here, we show that monoterpene-associated responses are propagated in feed-forward loops involving the systemic acquired resistance (SAR) signaling components pipecolic acid, glycerol-3-phosphate, and LEGUME LECTIN-LIKE PROTEIN1 (LLP1). In this cascade, LLP1 forms a key regulatory unit in both within-plant and betweenplant propagation of immunity. The data integrate molecular components of SAR into systemic signaling networks that are separate from conventional, SA-associated innate immune mechanisms. These networks are central to plant-to-plant propagation of immunity, potentially raising SAR to the population level. In this process, monoterpenes act as microbe-inducible plant volatiles, which as part of plant-derived volatile blends have the potential to promote the generation of a wave of innate immune signaling within canopies or plant stands. Hence, plant-to-plant propagation of SAR holds significant potential to fortify future durable crop protection strategies following a single volatile trigger.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Methyl Salicylate Production; Plant Defense; Arabidopsis-thaliana; Pipecolic Acid; Azelaic-acid; Volatiles; Communication; Induction; Signal; Immunity
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Quellenangaben Volume: 10, Issue: 1, Pages: , Article Number: 3813 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed