Signaling virulence and resistance: Pathogen-induced changes in cellular processes

Signaling virulence and resistance: Pathogen-induced changes in cellular processes

Accepted Manuscript Signaling virulence and resistance: Pathogen-induced changes in cellular processes Brad Day, Editor-in-Chief Associate Professor P...

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Accepted Manuscript Signaling virulence and resistance: Pathogen-induced changes in cellular processes Brad Day, Editor-in-Chief Associate Professor PII:

S0885-5765(16)30061-3

DOI:

10.1016/j.pmpp.2016.05.006

Reference:

YPMPP 1196

To appear in:

Physiological and Molecular Plant Pathology

Please cite this article as: Day B, Signaling virulence and resistance: Pathogen-induced changes in cellular processes, Physiological and Molecular Plant Pathology (2016), doi: 10.1016/ j.pmpp.2016.05.006. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

ACCEPTED MANUSCRIPT

Signaling virulence and resistance: Pathogen-induced changes in cellular processes

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The activation of plant resistance to pathogen infection relies on the synchronized expression and attenuation of numerous cellular processes, including changes in gene expression, host metabolism, and the secretion of defense-associated compounds to the site of infection. For decades, plant pathologists have cataloged the temporal and spatial changes in plants in response to pathogen perception and infection. While numerous plant processes have been associated with the perception of a wide range of microorganisms, in most cases, we still lack an complete understanding of the nature of these changes: Are they induced in responses to the activation of resistance, or are the induced by the pathogen to perturb the activation of defense signaling and immunity.

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Brad Day Editor-in-Chief

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In this issue, we highlight several articles that address changes in cellular homeostasis in response to pathogen association, ranging from an analysis of genome-wide changes in transcription and the regulation of transcription (Dey et al., 2016; Chand et al., 2016; Shin et al., 2016), to the role of changes in second messengers (Saha et al., 2016) and the role of volatiles as mediators of pathogen virulence (Eguchi et al., 2016). And the common thread that links many of these studies? Most of these pathogen-induced changes result in differential expression patterns, and the activity, of hormone metabolism and signaling. And while the convergence of resistance signaling on hormone biosynthesis and associated processes is not a new finding, these studies contribute to a growing body of work that may ultimately define how plants respond to stress – whether biotic or abiotic – and how pathogens have evolved mechanisms to manipulate host physiology to simulate general stress conditions, with the ultimate goal of changing the growth-defense balance.