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Barbé S, Figàs-Segura À, Benada M, Navarro-Herrero I, Sampaio TM, Biosca EG, Marco-Noales E. Plant-associated microbiota as a source of antagonistic bacteria against the phytopathogen Erwinia amylovora. Environ Microbiol Rep 2022; 14:559-569. [PMID: 35403335 DOI: 10.1111/1758-2229.13064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Control of bacterial plant diseases is a major concern, as they affect economically important species and spread easily, such as the case of fire blight of rosaceous caused by Erwinia amylovora. In the search for alternatives to the use of agrochemicals and antibiotics, this work presents a screening of natural bacterial antagonists of this relevant and devastating phytopathogen. We recovered bacterial isolates from different plant tissues and geographical origins and then selected those with the strongest ability to reduce fire blight symptoms ex vivo and remarkable in vitro antagonistic activity against E. amylovora. None of them elicited a hypersensitivity reaction in tobacco leaves, most produced several hydrolytic enzymes and presented other biocontrol and/or plant growth-promoting activities, such as siderophore production and phosphate solubilization. These isolates, considered as biocontrol candidates, were identified by 16S rRNA sequencing as Pseudomonas rhizosphaerae, Curtobacterium flaccumfaciens, Enterobacter cancerogenus, Pseudomonas azotoformans, Rosenbergiella epipactidis and Serratia plymuthica. This is the first time that the last five bacterial species are reported to have biocontrol potential against E. amylovora.
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Affiliation(s)
- Silvia Barbé
- Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 km 10.7, 46113 Moncada, Valencia, Spain
| | - Àngela Figàs-Segura
- Departamento de Microbiología y Ecología, Facultad de Ciencias Biológicas, Universitat de València, C/Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - M'hamed Benada
- Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 km 10.7, 46113 Moncada, Valencia, Spain
- Faculty of Natural Sciences, Earth and the Universe, 8 Mai 1945 University, Guelma, Algeria
| | - Inmaculada Navarro-Herrero
- Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 km 10.7, 46113 Moncada, Valencia, Spain
| | - Telma Maria Sampaio
- Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 km 10.7, 46113 Moncada, Valencia, Spain
| | - Elena G Biosca
- Departamento de Microbiología y Ecología, Facultad de Ciencias Biológicas, Universitat de València, C/Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Ester Marco-Noales
- Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315 km 10.7, 46113 Moncada, Valencia, Spain
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