| Title: | Systemic propagation of immunity in plants |
| Author(s): | Vlot AC; Sales JH; Lenk M; Bauer K; Brambilla A; Sommer A; Chen Y; Wenig M; Nayem S; |
| Address: | "Department of Environmental Science, Institute of Biochemical Plant Pathology, Helmholtz Zentrum Muenchen, Ingolstaedter Landstr. 1, Neuherberg, 85764, Germany" |
| ISSN/ISBN: | 1469-8137 (Electronic) 0028-646X (Linking) |
| Abstract: | "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" |
| Keywords: | "*Arabidopsis/metabolism *Arabidopsis Proteins/metabolism Gene Expression Regulation, Plant Plant Diseases Plant Immunity Salicylic Acid induced systemic resistance (ISR) pipecolic acid plant microbiome priming salicylic acid (SA) systemic acquired resista;" |
| Notes: | "MedlineVlot, A Corina Sales, Jennifer H Lenk, Miriam Bauer, Kornelia Brambilla, Alessandro Sommer, Anna Chen, Yuanyuan Wenig, Marion Nayem, Shahran eng Research Support, Non-U.S. Gov't Review England 2020/09/27 New Phytol. 2021 Feb; 229(3):1234-1250. doi: 10.1111/nph.16953. Epub 2020 Oct 24" |
