ADS1 encodes a MATE-transporter that negatively regulates plant disease resistance

© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 192(2011), 2 vom: 01. Okt., Seite 471-82
1. Verfasser: Sun, Xinli (VerfasserIn)
Weitere Verfasser: Gilroy, Eleanor M, Chini, Andrea, Nurmberg, Pedro L, Hein, Ingo, Lacomme, Christophe, Birch, Paul R J, Hussain, Adil, Yun, Byung-Wook, Loake, Gary J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Proteins pathogenesis-related proteins, plant Salicylic Acid O414PZ4LPZ
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520 |a Multidrug and toxic compound extrusion (MATE) proteins comprise the most recently identified family of multidrug transporters. In plants, the numbers of MATE proteins has undergone a remarkable expansion, underscoring the importance of these transporters within this kingdom. Here, we describe the identification and characterization of Activated Disease Susceptibility 1 (ADS1) which encodes a putative MATE transport protein. An activation tagging screen uncovered the ads1-Dominant (ads1-D) mutant, which was subsequently characterized by molecular, genetic and biochemical approaches. The ads1-D mutant was compromised in both basal and nonhost resistance against microbial pathogens. Further, plant defence responses conferred by RPS4 were also disabled in ads1-D plants. By contrast, depletion of ADS1 transcripts by RNA-interference (RNAi) promoted basal disease resistance. Unexpectedly, ads1-D plants were found to constitutively accumulate reactive oxygen intermediates (ROIs). However, analysis of ads1-D Arabidopsis thaliana respiratory burst oxidase (atrboh) double and triple mutants indicated that an increase in ROIs did not impact ads1-D-mediated disease susceptibility. Our findings imply that ADS1 negatively regulates the accumulation of the plant immune activator salicylic acid (SA) and cognate Pathogenesis-Related 1 (PR1) gene expression. Collectively, these data highlight an important role for MATE proteins in the establishment of plant disease resistance 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Gilroy, Eleanor M  |e verfasserin  |4 aut 
700 1 |a Chini, Andrea  |e verfasserin  |4 aut 
700 1 |a Nurmberg, Pedro L  |e verfasserin  |4 aut 
700 1 |a Hein, Ingo  |e verfasserin  |4 aut 
700 1 |a Lacomme, Christophe  |e verfasserin  |4 aut 
700 1 |a Birch, Paul R J  |e verfasserin  |4 aut 
700 1 |a Hussain, Adil  |e verfasserin  |4 aut 
700 1 |a Yun, Byung-Wook  |e verfasserin  |4 aut 
700 1 |a Loake, Gary J  |e verfasserin  |4 aut 
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