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Vlot, A.C. ; Sales, J. ; Lenk, M. ; Bauer, K. ; Brambilla, A. ; Sommer, A. ; Chen, Y. ; Wenig, M. ; Nayem, S.

Systemic propagation of immunity in plants.

New Phytol. 229, 1234-1250 (2021)
Publ. Version/Full Text Postprint DOI
Open Access Gold (Paid Option)
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Systemic immunity triggered by local plant-microbe interactions is studied as systemic acquired resistance (SAR) or induced systemic resistance (ISR) depending on the site of induction and the lifestyle of the inducing microorganism. SAR is induced by pathogens interacting with leaves, whereas ISR is induced by beneficial microbes interacting with roots. Although salicylic acid (SA) is a central component of SAR, additional signals exclusively promote systemic and not local immunity. These signals cooperate in SAR- and possibly also ISR-associated signaling networks that regulate systemic immunity. The non-SA SAR pathway is driven by pipecolic acid or its presumed bioactive derivative N-hydroxy-pipecolic acid. This pathway further regulates inter-plant defense propagation through volatile organic compounds that are emitted by SAR-induced plants and recognized as defense cues by neighboring plants. Both SAR and ISR influence phytohormone crosstalk towards enhanced defense against pathogens, which at the same time affects the composition of the plant microbiome. This potentially leads to further changes in plant defense, plant-microbe, and plant-plant interactions. Therefore, we propose that such inter-organismic interactions could be combined in potentially highly effective plant protection strategies.
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Publication type Article: Journal article
Document type Review
Corresponding Author
Keywords Induced Systemic Resistance (isr) ; Pipecolic Acid ; Plant Immunity ; Plant Microbiome ; Priming ; Salicylic Acid (sa) ; Systemic Acquired Resistance (sar) ; Volatile Organic Compounds (vocs); Pipecolic Acid Biosynthesis; Pamp-triggered Immunity; Acquired-resistance; Salicylic-acid; Arabidopsis-thaliana; Methyl Salicylate; Piriformospora-indica; Abscisic-acid; Salt-stress; Glycerolipid Metabolism
ISSN (print) / ISBN 0028-646X
e-ISSN 1469-8137
Journal New Phytologist
Quellenangaben Volume: 229, Issue: 3, Pages: 1234-1250 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place 111 River St, Hoboken 07030-5774, Nj Usa
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Biochemical Plant Pathology (BIOP)
Grants DFG