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Title: Dual Regulation of Gene Expression Mediated by Extended MAPK Activation and Salicylic Acid Contributes to Robust Innate Immunity in Arabidopsis thaliana

Journal Article · · PLoS Genetics
 [1];  [2];  [3];  [4];  [5];  [3];  [3];  [6];  [3]
  1. Max Planck Institute for Plant Breeding Research, Cologne (Germany); University of Minnesota, Minneapolis, MN (United States)
  2. Max Planck Institute for Plant Breeding Research, Cologne (Germany)
  3. University of Minnesota, Minneapolis, MN (United States)
  4. University of Minnesota, Minneapolis, MN (United States); Institute for Innovation, Ajinomoto Co., Inc., Kawasaki (Japan)
  5. Chicago State University, IL (United States)
  6. National Institutes of Natural Sciences, Okazaki (Japan)

Network robustness is a crucial property of the plant immune signaling network because pathogens are under a strong selection pressure to perturb plant network components to dampen plant immune responses. Nevertheless, modulation of network robustness is an area of network biology that has rarely been explored. While two modes of plant immunity, Effector-Triggered Immunity (ETI) and Pattern-Triggered Immunity (PTI), extensively share signaling machinery, the network output is much more robust against perturbations during ETI than PTI, suggesting modulation of network robustness. Here, we report a molecular mechanism underlying the modulation of the network robustness in Arabidopsis thaliana. The salicylic acid (SA) signaling sector regulates a major portion of the plant immune response and is important in immunity against biotrophic and hemibiotrophic pathogens. In Arabidopsis, SA signaling was required for the proper regulation of the vast majority of SA-responsive genes during PTI. However, during ETI, regulation of most SA-responsive genes, including the canonical SA marker gene PR1, could be controlled by SA-independent mechanisms as well as by SA. The activation of the two immune-related MAPKs, MPK3 and MPK6, persisted for several hours during ETI but less than one hour during PTI. Sustained MAPK activation was sufficient to confer SA-independent regulation of most SA-responsive genes. Furthermore, the MPK3 and SA signaling sectors were compensatory to each other for inhibition of bacterial growth as well as for PR1 expression during ETI. These results indicate that the duration of the MAPK activation is a critical determinant for modulation of robustness of the immune signaling network. Our findings with the plant immune signaling network imply that the robustness level of a biological network can be modulated by the activities of network components.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); Max Planck Society; National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS)
Grant/Contract Number:
FG02-05ER15670; MCB-0918908; IOS-1121425
OSTI ID:
1904660
Journal Information:
PLoS Genetics, Vol. 9, Issue 12; ISSN 1553-7404
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

MAP Kinase Cascades in Arabidopsis Innate Immunity journal January 2012
How to build a pathogen detector: structural basis of NB-LRR function journal August 2012
Robustness: mechanisms and consequences journal September 2009
Design principles for robust biochemical reaction networks: What works, what cannot work, and what might almost work journal May 2011
Protein kinase signaling networks in plant innate immunity journal October 2011
Arabidopsis EDS1 Connects Pathogen Effector Recognition to Cell Compartment-Specific Immune Responses journal December 2011
Cell Death Mediated by MAPK Is Associated with Hydrogen Peroxide Production in Arabidopsis journal January 2002
Direct Ubiquitination of Pattern Recognition Receptor FLS2 Attenuates Plant Innate Immunity journal June 2011
Phosphorylation of 1-Aminocyclopropane-1-Carboxylic Acid Synthase by MPK6, a Stress-Responsive Mitogen-Activated Protein Kinase, Induces Ethylene Biosynthesis in Arabidopsis journal November 2004
An efficient Agrobacterium-mediated transient transformation of Arabidopsis: An efficient transient transformation journal November 2011
The type III effector HopF2 Pto targets Arabidopsis RIN4 protein to promote Pseudomonas syringae virulence journal January 2010
Sustained activation of the mitogen-activated protein (MAP) kinase cascade may be required for differentiation of PC12 cells. Comparison of the effects of nerve growth factor and epidermal growth factor journal December 1992
Plant Innate Immunity: Perception of Conserved Microbial Signatures journal June 2012
Bacterial virulence effectors and their activities journal August 2010
The peptide growth factor, phytosulfokine, attenuates pattern-triggered immunity journal May 2012
Comparing signaling mechanisms engaged in pattern-triggered and effector-triggered immunity journal August 2010
Dual-Level Regulation of ACC Synthase Activity by MPK3/MPK6 Cascade and Its Downstream WRKY Transcription Factor during Ethylene Induction in Arabidopsis journal June 2012
The HSF-like Transcription Factor TBF1 Is a Major Molecular Switch for Plant Growth-to-Defense Transition journal January 2012
A fungal-responsive MAPK cascade regulates phytoalexin biosynthesis in Arabidopsis journal April 2008
Bacterial disease resistance in Arabidopsis through flagellin perception journal April 2004
Disruption of PAMP-Induced MAP Kinase Cascade by a Pseudomonas syringae Effector Activates Plant Immunity Mediated by the NB-LRR Protein SUMM2 journal March 2012
A flagellin-induced complex of the receptor FLS2 and BAK1 initiates plant defence journal July 2007
A Pseudomonas syringae Effector Inactivates MAPKs to Suppress PAMP-Induced Immunity in Plants journal May 2007
Isochorismate synthase is required to synthesize salicylic acid for plant defence journal November 2001
The Pseudomonas syringae type III effector tyrosine phosphatase HopAO1 suppresses innate immunity in Arabidopsis thaliana: Virulence action of Pst DC3000 effector HopAO1 journal September 2007
The plant immune system journal November 2006
The A. thaliana disease resistance gene RPS2 encodes a protein containing a nucleotide-binding site and leucine-rich repeats journal September 1994
Network Properties of Robust Immunity in Plants journal December 2009
Stress hormone-independent activation and nuclear translocation of mitogen-activated protein kinases in Arabidopsis thaliana during ozone exposure journal September 2004
A Pseudomonas syringae ADP-Ribosyltransferase Inhibits Arabidopsis Mitogen-Activated Protein Kinase Kinases journal June 2010
Coronatine Promotes Pseudomonas syringae Virulence in Plants by Activating a Signaling Cascade that Inhibits Salicylic Acid Accumulation journal June 2012
VIP1 response elements mediate mitogen-activated protein kinase 3-induced stress gene expression journal October 2009
Dynamic Changes in the Localization of MAPK Cascade Components Controlling Pathogenesis-related (PR) Gene Expression during Innate Immunity in Parsley journal May 2004
The Arabidopsis NPR1 Gene That Controls Systemic Acquired Resistance Encodes a Novel Protein Containing Ankyrin Repeats journal January 1997
Fls2 journal June 2000
Sustained versus Transient ERK1/2 Signaling Underlies the Anti- and Proapoptotic Effects of Oxidative Stress in Human RPE Cells journal October 2006
Arabidopsis snc2-1D Activates Receptor-Like Protein-Mediated Immunity Transduced through WRKY70 journal September 2010
Cluster analysis and display of genome-wide expression patterns journal December 1998
How do plants achieve immunity? Defence without specialized immune cells journal January 2012
Emerging functions for plant MAP kinase phosphatases journal June 2010
Exploration, normalization, and summaries of high density oligonucleotide array probe level data journal April 2003
Salicylic Acid, a Multifaceted Hormone to Combat Disease journal September 2009
Stomatal Development and Patterning Are Regulated by Environmentally Responsive Mitogen-Activated Protein Kinases in Arabidopsis journal January 2007
The Coronatine Toxin of Pseudomonas syringae Is a Multifunctional Suppressor of Arabidopsis Defense journal November 2012
How filamentous pathogens co-opt plants: the ins and outs of fungal effectors journal August 2011
Mitogen-Activated Protein Kinases 3 and 6 Are Required for Full Priming of Stress Responses in Arabidopsis thaliana     journal March 2009
A Genomic Approach to Identify Regulatory Nodes in the Transcriptional Network of Systemic Acquired Resistance in Plants journal January 2006
Specificity of MAP Kinase Signaling in Yeast Differentiation Involves Transient versus Sustained MAPK Activation journal September 2001
Interplay between MAMP-triggered and SA-mediated defense responses journal March 2008
Regulatory interactions between the Hrp type III protein secretion system and coronatine biosynthesis in Pseudomonas syringae pv. tomato DC3000 journal October 2000
Trojan Horse Strategy in Agrobacterium Transformation: Abusing MAPK Defense Signaling journal October 2007
Structure and function of the feed-forward loop network motif journal October 2003
Understanding the Plant Immune System journal December 2010
Bacterial Effector HopF2 Suppresses Arabidopsis Innate Immunity at the Plasma Membrane journal May 2011
Exploring the evolutionary path of plant MAPK networks journal September 2012
Closing the Circle on the Discovery of Genes Encoding Hrp Regulon Members and Type III Secretion System Effectors in the Genomes of Three Model Pseudomonas syringae Strains journal November 2006
Ligand-induced endocytosis of the pattern recognition receptor FLS2 in Arabidopsis journal March 2006