Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens

Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens

Bacteria promote growth by different mechanisms like phosphate (Pi) solubilization, Indol Acetic Acid (IAA) synthesis and siderophores production. The purpose of this study was to isolate bacteria that promote the growth of plants and may also act as antagonistic organisms of plant pathogens. Pi solubilizing microorganisms that were isolated from the soils of Tres Arroyos, Buenos Aires; were also able to synthesize IAA and produce siderophores. The ability of these bacteria to solubilize Pi was directly related with the synthesis of organic acids that lowered the pH and was not related with phosphatase activity. The ability of the organisms to solubilize Pi was indirectly related with the amount of soluble Pi present in the media. Though Pi solubilizing microorganisms are mainly associated with the rhizoplane exudates, in this case did not induce Pi solubilization. In addition to promote plant growth, these bacteria proved to be antagonistic of plant pathogens such as Fusarium graminearum and F. solani.

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Main Authors: López, Silvina, Pastorino, Graciela, Malbran, Ismael, Balatti, Pedro
Format: Digital revista
Language:eng
Published: Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata 2019
Online Access:https://revistas.unlp.edu.ar/revagro/article/view/9516
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spelling rev-revagro-ar-article-95162023-06-27T05:22:43Z Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens Enterobacterias aisladas de suelos agrícolas de Argentina con efecto promotor del crecimiento de plantas y biocontrol sobre fitopatógenos López, Silvina Pastorino, Graciela Malbran, Ismael Balatti, Pedro PGPB (Plant Growth Promoting Bacteria) solubilization of Pi siderophores AIA antagonistic PGPB (Plant Growth Promoting Bacteria) solubilización de Pi sideróforos AIA antagonista Bacteria promote growth by different mechanisms like phosphate (Pi) solubilization, Indol Acetic Acid (IAA) synthesis and siderophores production. The purpose of this study was to isolate bacteria that promote the growth of plants and may also act as antagonistic organisms of plant pathogens. Pi solubilizing microorganisms that were isolated from the soils of Tres Arroyos, Buenos Aires; were also able to synthesize IAA and produce siderophores. The ability of these bacteria to solubilize Pi was directly related with the synthesis of organic acids that lowered the pH and was not related with phosphatase activity. The ability of the organisms to solubilize Pi was indirectly related with the amount of soluble Pi present in the media. Though Pi solubilizing microorganisms are mainly associated with the rhizoplane exudates, in this case did not induce Pi solubilization. In addition to promote plant growth, these bacteria proved to be antagonistic of plant pathogens such as Fusarium graminearum and F. solani. Las bacterias que promueven el crecimiento vegetal lo hacen por diferentes mecanismos como la solubilización de fósforo, la síntesis de ácido indolacético y la producción de sideróforos. El objetivo de este trabajo fue aislar bacterias que promuevan el crecimiento de plantas y que también puedan actuar como organismos antagónicos de los hongos fitopatógenos. Los microorganismos fueron aislados de suelos de Tres Arroyos, pcia de Bs As y se encontraron bacterias solubilizadoras de fosfato inorgánico, que también sintetizan ácido indol acético y sideróforos. La capacidad de estas bacterias para solubilizar fosfatos (Pi) podría estar directamente relacionada con la síntesis de ácidos orgánicos que disminuyen el pH y no guardan relación con la actividad de la fosfatasa. La capacidad de los organismos para solubilizar Pi se relacionó indirectamente con la cantidad de Pi soluble presente en los medios. La capacidad de los microorganismos solubilizadores de Pi está principalmente asociada con el efecto de los exudados presentes en el rizoplano, sin embargo, esto no ocurrió en el caso de las bacterias evaluadas en el presente trabajo. Además de promover el crecimiento de las plantas, estas bacterias demostraron ser antagónicas de patógenos de plantas como Fusarium graminearum y F. solani. Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata 2019-12-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares Peer reviewed article application/pdf https://revistas.unlp.edu.ar/revagro/article/view/9516 10.24215/16699513e022 Journal of the Agronomy College; Vol. 118 No. 2 (2019): Revista de la Facultad de Agronomía; 022 Revista de la Facultad de Agronomía; Vol. 118 Núm. 2 (2019): Revista de la Facultad de Agronomía; 022 Journal de la Faculté d'Agronomie; Vol. 118 No. 2 (2019): Revista de la Facultad de Agronomía; 022 Revista da Faculdade de Agronomia; v. 118 n. 2 (2019): Revista de la Facultad de Agronomía; 022 1669-9513 0041-8676 eng https://revistas.unlp.edu.ar/revagro/article/view/9516/8437
institution UNLP AR
collection OJS
country Argentina
countrycode AR
component Revista
access En linea
databasecode rev-revagro-ar
tag revista
region America del Sur
libraryname Biblioteca de la Facultad de Ciencias Agrarias y Forestales de la UNLP Argentina
language eng
format Digital
author López, Silvina
Pastorino, Graciela
Malbran, Ismael
Balatti, Pedro
spellingShingle López, Silvina
Pastorino, Graciela
Malbran, Ismael
Balatti, Pedro
Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
author_facet López, Silvina
Pastorino, Graciela
Malbran, Ismael
Balatti, Pedro
author_sort López, Silvina
title Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
title_short Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
title_full Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
title_fullStr Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
title_full_unstemmed Enterobacteria isolated from an agricultural soil of Argentina promote plant growth and biocontrol activity of plant pathogens
title_sort enterobacteria isolated from an agricultural soil of argentina promote plant growth and biocontrol activity of plant pathogens
description Bacteria promote growth by different mechanisms like phosphate (Pi) solubilization, Indol Acetic Acid (IAA) synthesis and siderophores production. The purpose of this study was to isolate bacteria that promote the growth of plants and may also act as antagonistic organisms of plant pathogens. Pi solubilizing microorganisms that were isolated from the soils of Tres Arroyos, Buenos Aires; were also able to synthesize IAA and produce siderophores. The ability of these bacteria to solubilize Pi was directly related with the synthesis of organic acids that lowered the pH and was not related with phosphatase activity. The ability of the organisms to solubilize Pi was indirectly related with the amount of soluble Pi present in the media. Though Pi solubilizing microorganisms are mainly associated with the rhizoplane exudates, in this case did not induce Pi solubilization. In addition to promote plant growth, these bacteria proved to be antagonistic of plant pathogens such as Fusarium graminearum and F. solani.
publisher Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
publishDate 2019
url https://revistas.unlp.edu.ar/revagro/article/view/9516
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AT pastorinograciela enterobacteriaisolatedfromanagriculturalsoilofargentinapromoteplantgrowthandbiocontrolactivityofplantpathogens
AT malbranismael enterobacteriaisolatedfromanagriculturalsoilofargentinapromoteplantgrowthandbiocontrolactivityofplantpathogens
AT balattipedro enterobacteriaisolatedfromanagriculturalsoilofargentinapromoteplantgrowthandbiocontrolactivityofplantpathogens
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AT malbranismael enterobacteriasaisladasdesuelosagricolasdeargentinaconefectopromotordelcrecimientodeplantasybiocontrolsobrefitopatogenos
AT balattipedro enterobacteriasaisladasdesuelosagricolasdeargentinaconefectopromotordelcrecimientodeplantasybiocontrolsobrefitopatogenos
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