Cell wall Methanol as a signal in plant immunityстатья

Статья опубликована в высокорейтинговом журнале

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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 июня 2014 г.

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1. Full text Komarova_14_Frontiers.pdf 1,1 МБ 7 апреля 2014 [Dorokhov]

[1] Komarova T. V., Sheshukova E. V., Dorokhov Y. L. Cell wall methanol as a signal in plant immunity // Frontiers in plant science. — 2014. — Vol. 5, no. 101. — P. 1–4. 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 α-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 (VOC), which is quickly taken up by the intact leaves of the damaged plant and the neighboring plants. Methyl-esterified pectin promotes resistance to bacterial and fungal pathogens, possibly due to its richness of methyl groups and, thus, has greater ability to generate MeOH through PMEs. 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. [ DOI ]

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