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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/128316
Ver los metadatos del registro completo
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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 |
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2019 |
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