Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay

Autores
Tabares-da Rosa, Sofía; Signorelli, Santiago; Del Papa, María Florencia; Sabatini, Ornella; Reyno, Rafael; Lattanzi, Fernando; Rebuffo, Mónica; Sanjuán, Juan; Monza Galetti, Jorge
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ensifer meliloti establishes symbiosis with Medicago sativa (alfalfa) and other perennial species of Medicago that grow in soils with neutral to alkaline pH, whereas Ensifer medicae makes symbiosis with annual medics adapted to moderately acid soils. The new species Rhizobium favelukesii, whose strain is LPU83, belongs to an alfalfa group of inefficient rhizobia, known as the Oregon type, initially represented by Rhizobium sp. strain Or191. R. favelukesii is considered a potential risk in the acid soils where alfalfa is grown, and could explain the inefficient nodulation observed in different countries. In acidic soils from the «Dairy Basin» of Uruguay, producers inoculate alfalfa with E. melliloti U143 strain. This edaphic condition is often marginal because the maximum potential of rhizobia-alfalfa symbiosis is not achieved at acid pH. Although Uruguay has an outstanding position in the production and use of rhizobial inoculants, the commercial strains currently used in Trifolium, Lotus and alfalfa were selected about 50 years ago in different conditions that the present ones as a consequence of: i) the displacement of cultivated pastures to other sites, ii) the sowing method, and iii) the use of new cultivars. In this review, alfalfa inoculation is analyzed in some countries and a strategy for the development of an inoculant suitable for Uruguayan acid soils is proposed. This strategy is based on the selection of efficient and competitive strains, as the first selection criteria, and persistency in soil as the second one.
Instituto de Biotecnologia y Biologia Molecular
Materia
Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/128316

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network_name_str SEDICI (UNLP)
spelling Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for UruguayTabares-da Rosa, SofíaSignorelli, SantiagoDel Papa, María FlorenciaSabatini, OrnellaReyno, RafaelLattanzi, FernandoRebuffo, MónicaSanjuán, JuanMonza Galetti, JorgeBioquímicaCiencias AgrariasEnsifer melilotiOregon strainsAvailable aluminiumEnsifer meliloti establishes symbiosis with Medicago sativa (alfalfa) and other perennial species of Medicago that grow in soils with neutral to alkaline pH, whereas Ensifer medicae makes symbiosis with annual medics adapted to moderately acid soils. The new species Rhizobium favelukesii, whose strain is LPU83, belongs to an alfalfa group of inefficient rhizobia, known as the Oregon type, initially represented by Rhizobium sp. strain Or191. R. favelukesii is considered a potential risk in the acid soils where alfalfa is grown, and could explain the inefficient nodulation observed in different countries. In acidic soils from the «Dairy Basin» of Uruguay, producers inoculate alfalfa with E. melliloti U143 strain. This edaphic condition is often marginal because the maximum potential of rhizobia-alfalfa symbiosis is not achieved at acid pH. Although Uruguay has an outstanding position in the production and use of rhizobial inoculants, the commercial strains currently used in Trifolium, Lotus and alfalfa were selected about 50 years ago in different conditions that the present ones as a consequence of: i) the displacement of cultivated pastures to other sites, ii) the sowing method, and iii) the use of new cultivars. In this review, alfalfa inoculation is analyzed in some countries and a strategy for the development of an inoculant suitable for Uruguayan acid soils is proposed. This strategy is based on the selection of efficient and competitive strains, as the first selection criteria, and persistency in soil as the second one.Instituto de Biotecnologia y Biologia Molecular2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf4-16http://sedici.unlp.edu.ar/handle/10915/128316enginfo:eu-repo/semantics/altIdentifier/issn/1510-0839info:eu-repo/semantics/altIdentifier/doi/10.31285/agro.23.120info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:02Zoai:sedici.unlp.edu.ar:10915/128316Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:03.163SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
title Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
spellingShingle Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
Tabares-da Rosa, Sofía
Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
title_short Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
title_full Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
title_fullStr Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
title_full_unstemmed Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
title_sort Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
dc.creator.none.fl_str_mv Tabares-da Rosa, Sofía
Signorelli, Santiago
Del Papa, María Florencia
Sabatini, Ornella
Reyno, Rafael
Lattanzi, Fernando
Rebuffo, Mónica
Sanjuán, Juan
Monza Galetti, Jorge
author Tabares-da Rosa, Sofía
author_facet Tabares-da Rosa, Sofía
Signorelli, Santiago
Del Papa, María Florencia
Sabatini, Ornella
Reyno, Rafael
Lattanzi, Fernando
Rebuffo, Mónica
Sanjuán, Juan
Monza Galetti, Jorge
author_role author
author2 Signorelli, Santiago
Del Papa, María Florencia
Sabatini, Ornella
Reyno, Rafael
Lattanzi, Fernando
Rebuffo, Mónica
Sanjuán, Juan
Monza Galetti, Jorge
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
topic Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
dc.description.none.fl_txt_mv Ensifer meliloti establishes symbiosis with Medicago sativa (alfalfa) and other perennial species of Medicago that grow in soils with neutral to alkaline pH, whereas Ensifer medicae makes symbiosis with annual medics adapted to moderately acid soils. The new species Rhizobium favelukesii, whose strain is LPU83, belongs to an alfalfa group of inefficient rhizobia, known as the Oregon type, initially represented by Rhizobium sp. strain Or191. R. favelukesii is considered a potential risk in the acid soils where alfalfa is grown, and could explain the inefficient nodulation observed in different countries. In acidic soils from the «Dairy Basin» of Uruguay, producers inoculate alfalfa with E. melliloti U143 strain. This edaphic condition is often marginal because the maximum potential of rhizobia-alfalfa symbiosis is not achieved at acid pH. Although Uruguay has an outstanding position in the production and use of rhizobial inoculants, the commercial strains currently used in Trifolium, Lotus and alfalfa were selected about 50 years ago in different conditions that the present ones as a consequence of: i) the displacement of cultivated pastures to other sites, ii) the sowing method, and iii) the use of new cultivars. In this review, alfalfa inoculation is analyzed in some countries and a strategy for the development of an inoculant suitable for Uruguayan acid soils is proposed. This strategy is based on the selection of efficient and competitive strains, as the first selection criteria, and persistency in soil as the second one.
Instituto de Biotecnologia y Biologia Molecular
description Ensifer meliloti establishes symbiosis with Medicago sativa (alfalfa) and other perennial species of Medicago that grow in soils with neutral to alkaline pH, whereas Ensifer medicae makes symbiosis with annual medics adapted to moderately acid soils. The new species Rhizobium favelukesii, whose strain is LPU83, belongs to an alfalfa group of inefficient rhizobia, known as the Oregon type, initially represented by Rhizobium sp. strain Or191. R. favelukesii is considered a potential risk in the acid soils where alfalfa is grown, and could explain the inefficient nodulation observed in different countries. In acidic soils from the «Dairy Basin» of Uruguay, producers inoculate alfalfa with E. melliloti U143 strain. This edaphic condition is often marginal because the maximum potential of rhizobia-alfalfa symbiosis is not achieved at acid pH. Although Uruguay has an outstanding position in the production and use of rhizobial inoculants, the commercial strains currently used in Trifolium, Lotus and alfalfa were selected about 50 years ago in different conditions that the present ones as a consequence of: i) the displacement of cultivated pastures to other sites, ii) the sowing method, and iii) the use of new cultivars. In this review, alfalfa inoculation is analyzed in some countries and a strategy for the development of an inoculant suitable for Uruguayan acid soils is proposed. This strategy is based on the selection of efficient and competitive strains, as the first selection criteria, and persistency in soil as the second one.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
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status_str publishedVersion
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url http://sedici.unlp.edu.ar/handle/10915/128316
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1510-0839
info:eu-repo/semantics/altIdentifier/doi/10.31285/agro.23.120
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
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Creative Commons Attribution 4.0 International (CC BY 4.0)
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