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

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 stra...

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Detalles Bibliográficos
Autores principales: Tabares-da Rosa, Sofía, Signorelli, Santiago, Del Papa, María Florencia, Sabatini, Ornella, Reyno, Rafael, Lattanzi, Fernando, Rebuffo, Mónica, Sanjuán, Juan, Monza Galetti, Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128316
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128316
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
spellingShingle Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
Tabares-da Rosa, Sofía
Signorelli, Santiago
Del Papa, María Florencia
Sabatini, Ornella
Reyno, Rafael
Lattanzi, Fernando
Rebuffo, Mónica
Sanjuán, Juan
Monza Galetti, Jorge
Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
topic_facet Bioquímica
Ciencias Agrarias
Ensifer meliloti
Oregon strains
Available aluminium
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.
format Articulo
Articulo
author Tabares-da Rosa, Sofía
Signorelli, Santiago
Del Papa, María Florencia
Sabatini, Ornella
Reyno, Rafael
Lattanzi, Fernando
Rebuffo, Mónica
Sanjuán, Juan
Monza Galetti, Jorge
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_sort Tabares-da Rosa, Sofía
title Rhizobia Inoculants for Alfalfa in Acid Soils: A Proposal for Uruguay
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
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/128316
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