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Bacillus subtilis ALBA01 alleviates onion pink root by antagonizing the pathogen Setophoma terrestris and allowing physiological status maintenance

Abstract
The soil-borne pathogen Setophoma terrestris is the causal agent of pink root of onion, one of the most challenging diseases in onion production. Conventional approaches for managing the disease like solarization, soil fumigation and crop rotation have not been proven effective enough. In this work, we evaluated the biocontrol capacity of Bacillus subtilis ALBA01 (BsA01) against S. terrestris, in a highly susceptible onion cultivar, both under greenhouse [ver mas...]
The soil-borne pathogen Setophoma terrestris is the causal agent of pink root of onion, one of the most challenging diseases in onion production. Conventional approaches for managing the disease like solarization, soil fumigation and crop rotation have not been proven effective enough. In this work, we evaluated the biocontrol capacity of Bacillus subtilis ALBA01 (BsA01) against S. terrestris, in a highly susceptible onion cultivar, both under greenhouse and field conditions. Disease incidence and severity were evaluated together with growth, photosynthesis among other physiological variables, and yield parameters. When compared with plants infected with the pathogen, those plants co-inoculated with BsA01 showed significantly less damage and levels of biocontrol above 50%. With regard to physiological parameters, plants challenged with S. terrestris and inoculated with BsA01 performed as well as the control non-infected plants revealing a growth promotion effect of BsA01 on onion plants. [Cerrar]
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Author
Sayago, Pamela;   Juncosa, Florencia;   Albarracín Orio, Andrea Georgina;   Luna, Dario Fernando;   Molina, Gabriela;   Lafi, Jorge;   Ducasse, Daniel Adrian;  
Fuente
European Journal of Plant Pathology (First published May 2020)
Date
2020
Editorial
Springer
ISSN
0929-1873
1573-8469
URI
http://hdl.handle.net/20.500.12123/7369
https://link.springer.com/article/10.1007/s10658-020-02012-x
DOI
https://doi.org/10.1007/s10658-020-02012-x
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Cebolla; Onions; Enfermedades de las Plantas; Plant Diseases; Bacillus subtilis; Control Biológico; Biological Control; Control de Enfermedades; Diseases Control; Setophoma terrestris;
Derechos de acceso
Restringido
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Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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