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Regulation of primary plant metabolism during plant-pathogen interactions and its contribution to plant defense

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Title Regulation of primary plant metabolism during plant-pathogen interactions and its contribution to plant defense
 
Creator Rojas, Clemencia M.
Senthil-Kumar, Muthappa
Tzin, Vered
Mysore, Kirankumar S.
 
Subject primary metabolism
plant defense
virulent pathogens
avirulent pathogens
programmed cell death
hypersensitive response
 
Description Accepted date: 15 January 2014
Plants are constantly exposed to microorganisms in the environment and, as a result, have evolved intricate mechanisms to recognize and defend themselves against potential pathogens. One of these responses is the downregulation of photosynthesis and other processes associated with primary metabolism that are essential for plant growth. It has been suggested that the energy saved by downregulation of primary metabolism is diverted and used for defense responses. However, several studies have shown that upregulation of primary metabolism also occurs during plant-pathogen interactions. We propose that upregulation of primary metabolism modulates signal transduction cascades that lead to plant defense responses. In support of this thought, we here compile evidence from the literature to show that upon exposure to pathogens or elicitors, plants induce several genes associated with primary metabolic pathways, such as those involved in the synthesis or degradation of carbohydrates, amino acids and lipids. In addition, genetic studies have confirmed the involvement of these metabolic pathways in plant defense responses. This review provides a new perspective highlighting the relevance of primary metabolism in regulating plant defense against pathogens with the hope to stimulate further research in this area.
We thank Ms. Jennifer Fitzgerald and Mrs. Jackie Kelley for proofreading the manuscript and Ms. Katie Brown for assistance with
the figures. This work was supported by the Samuel Roberts Noble
Foundation.
 
Date 2015-12-22T11:18:22Z
2015-12-22T11:18:22Z
2014
 
Type Article
 
Identifier Front. Plant Sc., 5: 17
1664-462X
http://172.16.0.77:8080/jspui/handle/123456789/446
http://journal.frontiersin.org/article/10.3389/fpls.2014.00017/abstract
10.3389/fpls.2014.00017
 
Language en_US
 
Publisher Frontiers Media S.A.