The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model

Autores
Puente, Mariana L.; Gualpa, José Luis; Lopez, Gaston Alberto; Molina, Romina Micaela; Carletti, Susana M.; Cassan, Fabricio Dario
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Azospirillum sp. is one of the most studied genera of plant growth-promoting rhizobacteria (PGPR). The ability of Azospirillum sp. to promote plant growth has been associated with its ability to produce several phytohormones, such as auxins, gibberellins and cytokinins, but mainly indole-3-acetic acid (IAA). It has been propoosed that the production of IAA explains the positive effects of co-inoculation with Azospirillum sp. on the rhizobia-legume symbiosis. In this study, we constructed an IAA-deficient mutant of A. brasilense Az39 (ipdC−) by using a restriction-free cloning method. We inoculated soybean seeds with 1·106 cfu·seed−1 of Bradyrhizobium japonicum E109 and co-inoculating leaves at the V3 stage with 1·108 cfu.plant−1 of A. brasilense Az39 wt or ipdC− or inoculated leaves with 20 μg.plant−1 synthetic IAA. The results confirmed soybean growth promotion as there was increased total plant and root length, aerial and root dry weight, number of nodules on the primary root, and an increase in the symbiosis established with B. japonicum E109. Nodule weight also increased after foliar co-inoculation with the IAA- producer A. brasilense Az39. The exogenous application of IAA decreased aerial and root length, as well as the number of nodules on primary roots in comparison with the Az39 wt strain. These results allow us to propose a biological model of response to foliar co-inoculation of soybean with IAA-producing rhizobacteria. This model clearly shows that both the presence of microorganism as part of the colonization process and the production of IAA in situ are co-responsible, via plant signaling molecules, for the positive effects on plant growth and symbiosis establishment.
Fil: Puente, Mariana L.. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; Argentina
Fil: Gualpa, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Lopez, Gaston Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Molina, Romina Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Carletti, Susana M.. Universidad Nacional de Luján; Argentina
Fil: Cassan, Fabricio Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Materia
Azospirillum
Bradyrhizobium
Foliar Inoculation
Indole-3-Acetic Acid
Soybean
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/66184
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling modelPuente, Mariana L.Gualpa, José LuisLopez, Gaston AlbertoMolina, Romina MicaelaCarletti, Susana M.Cassan, Fabricio DarioAzospirillumBradyrhizobiumFoliar InoculationIndole-3-Acetic AcidSoybeanhttps://purl.org/becyt/ford/4.4https://purl.org/becyt/ford/4Azospirillum sp. is one of the most studied genera of plant growth-promoting rhizobacteria (PGPR). The ability of Azospirillum sp. to promote plant growth has been associated with its ability to produce several phytohormones, such as auxins, gibberellins and cytokinins, but mainly indole-3-acetic acid (IAA). It has been propoosed that the production of IAA explains the positive effects of co-inoculation with Azospirillum sp. on the rhizobia-legume symbiosis. In this study, we constructed an IAA-deficient mutant of A. brasilense Az39 (ipdC−) by using a restriction-free cloning method. We inoculated soybean seeds with 1·106 cfu·seed−1 of Bradyrhizobium japonicum E109 and co-inoculating leaves at the V3 stage with 1·108 cfu.plant−1 of A. brasilense Az39 wt or ipdC− or inoculated leaves with 20 μg.plant−1 synthetic IAA. The results confirmed soybean growth promotion as there was increased total plant and root length, aerial and root dry weight, number of nodules on the primary root, and an increase in the symbiosis established with B. japonicum E109. Nodule weight also increased after foliar co-inoculation with the IAA- producer A. brasilense Az39. The exogenous application of IAA decreased aerial and root length, as well as the number of nodules on primary roots in comparison with the Az39 wt strain. These results allow us to propose a biological model of response to foliar co-inoculation of soybean with IAA-producing rhizobacteria. This model clearly shows that both the presence of microorganism as part of the colonization process and the production of IAA in situ are co-responsible, via plant signaling molecules, for the positive effects on plant growth and symbiosis establishment.Fil: Puente, Mariana L.. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; ArgentinaFil: Gualpa, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; ArgentinaFil: Lopez, Gaston Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; ArgentinaFil: Molina, Romina Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; ArgentinaFil: Carletti, Susana M.. Universidad Nacional de Luján; ArgentinaFil: Cassan, Fabricio Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; ArgentinaSpringer2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66184Puente, Mariana L.; Gualpa, José Luis; Lopez, Gaston Alberto; Molina, Romina Micaela; Carletti, Susana M.; et al.; The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model; Springer; Symbiosis; 76; 1; 12-2017; 41-490334-51141878-7665CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s13199-017-0536-xinfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s13199-017-0536-xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:30Zoai:ri.conicet.gov.ar:11336/66184instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:44:31.221CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
title The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
spellingShingle The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
Puente, Mariana L.
Azospirillum
Bradyrhizobium
Foliar Inoculation
Indole-3-Acetic Acid
Soybean
title_short The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
title_full The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
title_fullStr The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
title_full_unstemmed The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
title_sort The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model
dc.creator.none.fl_str_mv Puente, Mariana L.
Gualpa, José Luis
Lopez, Gaston Alberto
Molina, Romina Micaela
Carletti, Susana M.
Cassan, Fabricio Dario
author Puente, Mariana L.
author_facet Puente, Mariana L.
Gualpa, José Luis
Lopez, Gaston Alberto
Molina, Romina Micaela
Carletti, Susana M.
Cassan, Fabricio Dario
author_role author
author2 Gualpa, José Luis
Lopez, Gaston Alberto
Molina, Romina Micaela
Carletti, Susana M.
Cassan, Fabricio Dario
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Azospirillum
Bradyrhizobium
Foliar Inoculation
Indole-3-Acetic Acid
Soybean
topic Azospirillum
Bradyrhizobium
Foliar Inoculation
Indole-3-Acetic Acid
Soybean
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.4
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Azospirillum sp. is one of the most studied genera of plant growth-promoting rhizobacteria (PGPR). The ability of Azospirillum sp. to promote plant growth has been associated with its ability to produce several phytohormones, such as auxins, gibberellins and cytokinins, but mainly indole-3-acetic acid (IAA). It has been propoosed that the production of IAA explains the positive effects of co-inoculation with Azospirillum sp. on the rhizobia-legume symbiosis. In this study, we constructed an IAA-deficient mutant of A. brasilense Az39 (ipdC−) by using a restriction-free cloning method. We inoculated soybean seeds with 1·106 cfu·seed−1 of Bradyrhizobium japonicum E109 and co-inoculating leaves at the V3 stage with 1·108 cfu.plant−1 of A. brasilense Az39 wt or ipdC− or inoculated leaves with 20 μg.plant−1 synthetic IAA. The results confirmed soybean growth promotion as there was increased total plant and root length, aerial and root dry weight, number of nodules on the primary root, and an increase in the symbiosis established with B. japonicum E109. Nodule weight also increased after foliar co-inoculation with the IAA- producer A. brasilense Az39. The exogenous application of IAA decreased aerial and root length, as well as the number of nodules on primary roots in comparison with the Az39 wt strain. These results allow us to propose a biological model of response to foliar co-inoculation of soybean with IAA-producing rhizobacteria. This model clearly shows that both the presence of microorganism as part of the colonization process and the production of IAA in situ are co-responsible, via plant signaling molecules, for the positive effects on plant growth and symbiosis establishment.
Fil: Puente, Mariana L.. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Microbiología y Zoología Agrícola; Argentina
Fil: Gualpa, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Lopez, Gaston Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Molina, Romina Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Carletti, Susana M.. Universidad Nacional de Luján; Argentina
Fil: Cassan, Fabricio Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
description Azospirillum sp. is one of the most studied genera of plant growth-promoting rhizobacteria (PGPR). The ability of Azospirillum sp. to promote plant growth has been associated with its ability to produce several phytohormones, such as auxins, gibberellins and cytokinins, but mainly indole-3-acetic acid (IAA). It has been propoosed that the production of IAA explains the positive effects of co-inoculation with Azospirillum sp. on the rhizobia-legume symbiosis. In this study, we constructed an IAA-deficient mutant of A. brasilense Az39 (ipdC−) by using a restriction-free cloning method. We inoculated soybean seeds with 1·106 cfu·seed−1 of Bradyrhizobium japonicum E109 and co-inoculating leaves at the V3 stage with 1·108 cfu.plant−1 of A. brasilense Az39 wt or ipdC− or inoculated leaves with 20 μg.plant−1 synthetic IAA. The results confirmed soybean growth promotion as there was increased total plant and root length, aerial and root dry weight, number of nodules on the primary root, and an increase in the symbiosis established with B. japonicum E109. Nodule weight also increased after foliar co-inoculation with the IAA- producer A. brasilense Az39. The exogenous application of IAA decreased aerial and root length, as well as the number of nodules on primary roots in comparison with the Az39 wt strain. These results allow us to propose a biological model of response to foliar co-inoculation of soybean with IAA-producing rhizobacteria. This model clearly shows that both the presence of microorganism as part of the colonization process and the production of IAA in situ are co-responsible, via plant signaling molecules, for the positive effects on plant growth and symbiosis establishment.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/66184
Puente, Mariana L.; Gualpa, José Luis; Lopez, Gaston Alberto; Molina, Romina Micaela; Carletti, Susana M.; et al.; The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model; Springer; Symbiosis; 76; 1; 12-2017; 41-49
0334-5114
1878-7665
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66184
identifier_str_mv Puente, Mariana L.; Gualpa, José Luis; Lopez, Gaston Alberto; Molina, Romina Micaela; Carletti, Susana M.; et al.; The benefits of foliar inoculation with Azospirillum brasilense in soybean are explained by an auxin signaling model; Springer; Symbiosis; 76; 1; 12-2017; 41-49
0334-5114
1878-7665
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s13199-017-0536-x
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s13199-017-0536-x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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