| Title: | Cell wall methanol as a signal in plant immunity |
| Author(s): | Komarova TV; Sheshukova EV; Dorokhov YL; |
| Address: | "A. N. Belozersky Institute of Physico-Chemical Biology, Moscow State University Moscow, Russia ; N. I. Vavilov Institute of General Genetics, Russian Academy of Science Moscow, Russia. N. I. Vavilov Institute of General Genetics, Russian Academy of Science Moscow, Russia" |
| ISSN/ISBN: | 1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking) |
| Abstract: | "Cell wall pectin forms a matrix around the cellulose-xyloglucan network that is composed of rhamnogalacturonan I, rhamnogalacturonan II, and homogalacturonan (HG), a major pectic polymer consisting of alpha-1,4-linked galacturonic acids. HG is secreted in a highly methyl-esterified form and selectively de-methyl-esterified by pectin methylesterases (PMEs) during cell growth and pathogen attack. The mechanical damage that often precedes the penetration of the leaf by a pathogen promotes the activation of PME, which in turn leads to the emission of methanol (MeOH), an abundant volatile organic compound, which is quickly perceived by the intact leaves of the damaged plant, and the neighboring plants. The exposure to MeOH may result in a 'priming' effect on intact leaves, setting the stage for the within-plant, and neighboring plant immunity. The emission of MeOH by a wounded plant enhances the resistance of the non-wounded, neighboring 'receiver' plants to bacterial pathogens and promotes cell-to-cell communication that facilitates the spread of viruses in neighboring plants" |
| Keywords: | cell wall methanol pectin pectin methylesterase plant immunity priming; |
| Notes: | "PubMed-not-MEDLINEKomarova, Tatiana V Sheshukova, Ekaterina V Dorokhov, Yuri L eng Review Switzerland 2014/03/29 Front Plant Sci. 2014 Mar 18; 5:101. doi: 10.3389/fpls.2014.00101. eCollection 2014" |
