Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen

The purpose of this work was to study further two Bradyrhizobium japonicum strains with high nitrogen-fixing capacity that were identified within a collection of approximately 200 isolates from the soils of Argentina. Nodulation and nitrogen-fixing capacity and the level of expression of regulatory...

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Autores principales:	López, Silvina Marianela Yanil, Molina Sánchez, María Dolores, Pastorino, Graciela Noemí, Franco, Mario Emilio Ernesto, Toro García, Nicolás, Balatti, Pedro Alberto
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2018
Materias:	Ingeniería Agronómica Bradyrhizobium japonicum Nitrogen rhizobia
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/140854
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-140854
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ingeniería Agronómica Bradyrhizobium japonicum Nitrogen rhizobia
spellingShingle	Ingeniería Agronómica Bradyrhizobium japonicum Nitrogen rhizobia López, Silvina Marianela Yanil Molina Sánchez, María Dolores Pastorino, Graciela Noemí Franco, Mario Emilio Ernesto Toro García, Nicolás Balatti, Pedro Alberto Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
topic_facet	Ingeniería Agronómica Bradyrhizobium japonicum Nitrogen rhizobia
description	The purpose of this work was to study further two Bradyrhizobium japonicum strains with high nitrogen-fixing capacity that were identified within a collection of approximately 200 isolates from the soils of Argentina. Nodulation and nitrogen-fixing capacity and the level of expression of regulatory as well as structural genes of nitrogen fixation and the 1-aminocyclopropane-1-carboxylate (ACC) deaminase gene of the isolates were compared with that of E109-inoculated plants. Both isolates of B. japonicum, 163 and 366, were highly efficient to fix nitrogen compared to commercial strain E109. Isolate 366 developed a higher number and larger biomass of nodules and because of this fixed more nitrogen. Isolate 163 developed the same number and nodule biomass than E109. However, nodules developed by isolate 163 had red interiors for a longer period, had a higher leghemoglobin content, and presented high levels of expression of acdS gene, that codes for an ACC deaminase. In conclusion, naturalized rhizobia of the soils of Argentina hold a diverse population that might be the source of highly active nitrogen-fixing rhizobia, a process that appears to be based on different strategies.
format	Articulo Articulo
author	López, Silvina Marianela Yanil Molina Sánchez, María Dolores Pastorino, Graciela Noemí Franco, Mario Emilio Ernesto Toro García, Nicolás Balatti, Pedro Alberto
author_facet	López, Silvina Marianela Yanil Molina Sánchez, María Dolores Pastorino, Graciela Noemí Franco, Mario Emilio Ernesto Toro García, Nicolás Balatti, Pedro Alberto
author_sort	López, Silvina Marianela Yanil
title	Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
title_short	Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
title_full	Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
title_fullStr	Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
title_full_unstemmed	Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen
title_sort	nodulation and delayed nodule senescence : strategies of two bradyrhizobium japonicum isolates with high capacity to fix nitrogen
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/140854
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Nodulation and Delayed Nodule Senescence : Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen

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