Article (Scientific journals)
Role of phenazines and cyclic lipopeptides produced by pseudomonas sp. CMR12a in induced systemic resistance on rice and bean
Ma, Z.; Hua, G. K. H.; Ongena, Marc et al.
2016In Environmental Microbiology Reports
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Abstract :
[en] Pseudomonas sp. CMR12a produces two different classes of cyclic lipopeptides (CLPs) (orfamides and sessilins), which all play a role in direct antagonism against soilborne pathogens. Here we show that Pseudomonas sp. CMR12a is also able to induce systemic resistance to Magnaporthe oryzae on rice and to the web blight pathogen Rhizoctonia solani AG2-2 on bean. Plant assays with biosynthesis mutants of Pseudomonas sp. CMR12a impaired in the production of phenazines and/or CLPs and purified metabolites revealed that distinct bacterial determinants are responsible for inducing systemic resistance in these two pathosystems. In rice, mutants impaired in phenazine production completely lost their ability to induce systemic resistance, while a soil drench with pure phenazine-1-carboxamide (PCN) at a concentration of 0.1 or 1 μM was active in inducing resistance against M. oryzae. In bean, mutants that only produced phenazines, sessilins or orfamides were still able to induce systemic resistance against Rhizoctonia web blight, but a balanced production of these metabolites was needed. This study not only shows that Pseudomonas sp. CMR12a can protect rice to blast disease and bean to web blight disease, but also displays that the determinants involved in induced systemic resistance are plant, pathogen and concentration dependent. © 2016 Society for Applied Microbiology and John Wiley & Sons Ltd.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Ma, Z.;  Laboratory of Phytopathology, Faculty of Bioscience EngineeringGhent UniversityGhent Belgium
Hua, G. K. H.;  Laboratory of Phytopathology, Faculty of Bioscience EngineeringGhent UniversityGhent Belgium
Ongena, Marc ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Höfte, M.;  Laboratory of Phytopathology, Faculty of Bioscience EngineeringGhent UniversityGhent Belgium
Language :
English
Title :
Role of phenazines and cyclic lipopeptides produced by pseudomonas sp. CMR12a in induced systemic resistance on rice and bean
Publication date :
2016
Journal title :
Environmental Microbiology Reports
eISSN :
1758-2229
Publisher :
Wiley-Blackwell
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 February 2017

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