Article (Scientific journals)
Surfactin protects wheat against Zymoseptoria tritici and activates both salicylic acid- and jasmonic acid-dependent defense responses
Le Mire, Géraldine; Siah, Ali; Brisset, Marie-Noëlle et al.
2018In Agriculture, 8
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Keywords :
Biocontrol; Surfactin; Induced resistance; Winter wheat; Zymoseptoria tritici
Abstract :
[en] Natural elicitors induce plant resistance against a broad spectrum of diseases, and are currently among the most promising biocontrol tools. The present study focuses on the elicitor properties of the cyclic lipopeptide surfactin on wheat, in order to stimulate the defenses of this major crop against the challenging fungal pathogen Zymoseptoria tritici. The protection efficacy of surfactin extracted from the strain Bacillus amyloliquefaciens S499 was investigated through greenhouse trials. Surfactin protected wheat by 70% against Z. tritici, similarly to the chemical reference elicitor Bion®50WG. In vitro biocidal assays revealed no antifungal activities of surfactin towards the pathogen. A biomolecular RT-qPCR based low-density microarray tool was used to study the relative expression of 23 wheat defense genes. Surfactin significantly induced wheat natural defenses by stimulating both salicylic acid- and jasmonic acid-dependent signaling pathways. Surfactin was successfully tested as an elicitor on the pathosystem wheat–Z. tritici. These results promote further sustainable agricultural practices and the reduction of chemical inputs.
Research center :
Laboratoire de Phytopathologie Intégrée et Urbaine - Gembloux Agro-Bio Tech - Université de Liège
Disciplines :
Agriculture & agronomy
Author, co-author :
Le Mire, Géraldine ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Phytopathologie
Siah, Ali;  Institut supérieur d'agronomie (ISA) Lille - Institut de recherche Charles Violette
Brisset, Marie-Noëlle;  IRHS - INRA Agrocampus Ouest - Université d'Angers
Gaucher, Matthieu;  IRHS-INRA Agrocampus Ouest - Université d'Angers
Deleu, Magali  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Jijakli, Haissam  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Language :
English
Title :
Surfactin protects wheat against Zymoseptoria tritici and activates both salicylic acid- and jasmonic acid-dependent defense responses
Publication date :
2018
Journal title :
Agriculture
ISSN :
0551-3677
eISSN :
1338-4376
Publisher :
De Gruyter Open, Poland
Volume :
8
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CARE Agriculture is Life
Available on ORBi :
since 09 February 2018

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