Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano
Alfalfa breeding programs require environmentally friendly alternatives to improve plant growth and health. Plant Growth Promoting Rhizobacteria (PGPR) and endophytic bacteria offer a biological solution as they can inhibit phytopathogenic fungi by producing antifungal compounds or enzymes. In Argen...
| Autores principales: | , , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba
2024
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/18578 https://revistas.unc.edu.ar/index.php/agris/issue/view/2971 https://doi.org/10.31047/1668.298x.v41.n1.41895 |
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| author | Moreno, Maria Valeria Arolfo, Valeria López, José Luis Erdozain, Sofía Agostina Bigatton, Ezequiel Darío Ayoub, Ibrahim Lucini, Enrique Iván Lagares, Antonio Odorizzi, Ariel |
| author_browse | Arolfo, Valeria Ayoub, Ibrahim Bigatton, Ezequiel Darío Erdozain, Sofía Agostina Lagares, Antonio Lucini, Enrique Iván López, José Luis Moreno, Maria Valeria Odorizzi, Ariel |
| author_facet | Moreno, Maria Valeria Arolfo, Valeria López, José Luis Erdozain, Sofía Agostina Bigatton, Ezequiel Darío Ayoub, Ibrahim Lucini, Enrique Iván Lagares, Antonio Odorizzi, Ariel |
| author_sort | Moreno, Maria Valeria |
| collection | INTA Digital |
| description | Alfalfa breeding programs require environmentally friendly alternatives to improve plant growth and health. Plant Growth Promoting Rhizobacteria (PGPR) and endophytic bacteria offer a biological solution as they can inhibit phytopathogenic fungi by producing antifungal compounds or enzymes. In Argentina, alfalfa is primarily affected by Colletotrichum trifolii (Ct) and Phytophthora megasperma (Pm). The objectives of this study were to select bacterial isolates with antifungal inhibition against Ct and Pm and identify a biocontroller isolate compatible with the rhizobia INTA5 has and with low-N2 O emissions, to constitute an eco-friendly bacterial consortium. Ten isolates demonstrated antifungal inhibition, with mean Inhibition Percentage (IP) values between 41.74-91.28 for Ct and 56.23-77.59 for Pm compared to the control. Among these isolates, B2, B4, SC6, and MN1 showed the highest inhibition performance and were selected to evaluate their compatibility with INTA5. Only B4 exhibited compatibility, which was further evaluated against Ct in an experiment with alfalfa seedlings under controlled conditions. The alfalfa seedlings treated with B4 increased the plant survival number against Ct. The availability of a bacterial consortium that promotes biocontrol and biological nitrogen fixation represents the preferred strategy for alfalfa breeding programs. |
| format | Artículo |
| id | INTA18578 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba |
| publisherStr | Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba |
| record_format | dspace |
| spelling | INTA185782024-07-19T12:35:54Z Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano Moreno, Maria Valeria Arolfo, Valeria López, José Luis Erdozain, Sofía Agostina Bigatton, Ezequiel Darío Ayoub, Ibrahim Lucini, Enrique Iván Lagares, Antonio Odorizzi, Ariel Medicago sativa Control Biológico Mejoramiento Genético Rizobacterias Biological Control Genetic Improvement Rhizobacteria Pathogens Antifungal Properties Organismo Patógeno Propiedad Antimicosica Alfalfa Rizobacterias Promotoras del Crecimiento Vegetal (RPCV) Endófitos Plant Growth Promoting Rhizobacteria Endophytes Lucerne Alfalfa breeding programs require environmentally friendly alternatives to improve plant growth and health. Plant Growth Promoting Rhizobacteria (PGPR) and endophytic bacteria offer a biological solution as they can inhibit phytopathogenic fungi by producing antifungal compounds or enzymes. In Argentina, alfalfa is primarily affected by Colletotrichum trifolii (Ct) and Phytophthora megasperma (Pm). The objectives of this study were to select bacterial isolates with antifungal inhibition against Ct and Pm and identify a biocontroller isolate compatible with the rhizobia INTA5 has and with low-N2 O emissions, to constitute an eco-friendly bacterial consortium. Ten isolates demonstrated antifungal inhibition, with mean Inhibition Percentage (IP) values between 41.74-91.28 for Ct and 56.23-77.59 for Pm compared to the control. Among these isolates, B2, B4, SC6, and MN1 showed the highest inhibition performance and were selected to evaluate their compatibility with INTA5. Only B4 exhibited compatibility, which was further evaluated against Ct in an experiment with alfalfa seedlings under controlled conditions. The alfalfa seedlings treated with B4 increased the plant survival number against Ct. The availability of a bacterial consortium that promotes biocontrol and biological nitrogen fixation represents the preferred strategy for alfalfa breeding programs. El programa de mejoramiento de alfalfa requiere alternativas más amigables con el ambiente para incrementar la sanidad del cultivo. Las rizobacterias promotoras del crecimiento vegetal (RPCV) y endófitos de semillas constituyen una opción para inhibir hongos patógenos por la producción de compuestos antifúngicos o enzimas hidrolíticas. En Argentina, la alfalfa es afectada principalmente por Colletotrichum trifolii (Ct) y Phytophthora megasperma (Pm). Los objetivos fueron seleccionar bacterias con capacidad antifúngica contra Ct y Pm, e identificar una compatible con el rizobio INTA5 con baja emisión de N2O para constituir un consorcio bacteriano sustentable. Diez cepas mostraron capacidad antifúngica con medias de porcentaje de inhibición (PI) entre 41,74-91,28 para Ct y 56,23-77,59 relativos al control para Pm. B2, B4, SC6 y MN1 fueron seleccionadas por su mayor capacidad de biocontrol y se estudió la compatibilidad con INTA5. Sólo B4 resultó compatible, por ello fue evaluada contra Ct sobre plántulas de alfalfa en experimentos bajo condiciones controladas. Esta cepa incrementó el número de plántulas sobrevivientes cuando las mismas fueron inoculadas con Ct. La disponibilidad de un consorcio bacteriano que estimule tanto el biocontrol como la fijación biológica de nitrógeno representa la estrategia preferida por el programa de mejoramiento de alfalfa. EEA Manfredi Fil: Moreno, Maria Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: Arolfo, Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: López, José Luis. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina. Consejo Nacional de Investigaciones Científicas; Argentina Fil: Erdozain, Sofía Agostina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas; Argentina Fil: Bigatton, Ezequiel Darío. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina Fil: Ayoub, Ibrahim. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Consejo Nacional de Investigaciones Científicas; Argentina Fil: Lucini, Enrique Iván. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina Fil: Lagares, Antonio. Universidad Nacional La Plata. Facultad de Ciencias Exactas; Argentina Fil: Odorizzi, Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina 2024-07-19T12:21:26Z 2024-07-19T12:21:26Z 2024-07-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/18578 https://revistas.unc.edu.ar/index.php/agris/issue/view/2971 1668-298X https://doi.org/10.31047/1668.298x.v41.n1.41895 eng info:eu-repograntAgreement/INTA/2019-PE-E6-I142-001, Mejoramiento genético de leguminosas y gramíneas forrajeras para incrementar la productividad y la sustentabilidad de los sistemas agropecuarios de la Argentina info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba AgriSciencia 41 (1) : 73-82. (julio 2024) |
| spellingShingle | Medicago sativa Control Biológico Mejoramiento Genético Rizobacterias Biological Control Genetic Improvement Rhizobacteria Pathogens Antifungal Properties Organismo Patógeno Propiedad Antimicosica Alfalfa Rizobacterias Promotoras del Crecimiento Vegetal (RPCV) Endófitos Plant Growth Promoting Rhizobacteria Endophytes Lucerne Moreno, Maria Valeria Arolfo, Valeria López, José Luis Erdozain, Sofía Agostina Bigatton, Ezequiel Darío Ayoub, Ibrahim Lucini, Enrique Iván Lagares, Antonio Odorizzi, Ariel Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title | Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title_full | Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title_fullStr | Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title_full_unstemmed | Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title_short | Selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium = Selección de cepas bacterianas con capacidad antifúngica contra fitopatógenos de alfalfa para constituir un consorcio bacteriano |
| title_sort | selection of bacterial isolates with fungal inhibition against alfalfa phytopathogens to constitute a bacterial consortium seleccion de cepas bacterianas con capacidad antifungica contra fitopatogenos de alfalfa para constituir un consorcio bacteriano |
| topic | Medicago sativa Control Biológico Mejoramiento Genético Rizobacterias Biological Control Genetic Improvement Rhizobacteria Pathogens Antifungal Properties Organismo Patógeno Propiedad Antimicosica Alfalfa Rizobacterias Promotoras del Crecimiento Vegetal (RPCV) Endófitos Plant Growth Promoting Rhizobacteria Endophytes Lucerne |
| url | http://hdl.handle.net/20.500.12123/18578 https://revistas.unc.edu.ar/index.php/agris/issue/view/2971 https://doi.org/10.31047/1668.298x.v41.n1.41895 |
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