Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth

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To identify plant growth promotion ability of phosphorus-solubilizing native bacteria, we have examined a collection of isolates representing the diversity of culturable phosphate-solubilizing bacteria from acid soils of the northeast of Argentina. Assays in growth medium supplemented with tric...

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Autores principales: Collavino, Mónica Mariana, Sansberro, Pedro Alfonso, Mroginski, Luis Amado, Aguilar, Mario Orlando
Formato: Artículo
Lenguaje:Inglés
Publicado: Springer Nature 2026
Materias:
Phosphate-solubilizing bacteria
Plant growth-promoting bacteria
Rhizobacteria
Biofertilization
Bacterial diversity
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/60111
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-60111
record_format dspace
spelling I48-R184-123456789-601112026-03-06T15:33:26Z Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth Collavino, Mónica Mariana Sansberro, Pedro Alfonso Mroginski, Luis Amado Aguilar, Mario Orlando Phosphate-solubilizing bacteria Plant growth-promoting bacteria Rhizobacteria Biofertilization Bacterial diversity To identify plant growth promotion ability of phosphorus-solubilizing native bacteria, we have examined a collection of isolates representing the diversity of culturable phosphate-solubilizing bacteria from acid soils of the northeast of Argentina. Assays in growth medium supplemented with tricalcium phosphate revealed different phosphorus solubilization activity and temporal patterns of solubilization. Acidification of the broth medium coincided with phosphorus solubilization. The isolates were grouped according to their Rep fingerprinting profiles and phylogenetically classified by 16S rDNA and biochemical analyses. These isolates were assigned to the genera Enterobacter, Pantoea, Pseudomonas, Acinetobacter, Burkholderia, and Exiguobacterium. Four isolates showing high phosphorus solubilizing activity in in vitro assays were inoculated on common beans (Phaseolus vulgaris); some of them promoted plant growth and increased photosynthesis and the P and N content of leaves. The results indicated that the ability to in vitro solubilize P is not necessarily associated to the promotion of plant growth. 2026-03-06T15:31:02Z 2026-03-06T15:31:02Z 2010 Artículo Collavino, Mónica Mariana, et al., 2010. Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth. Biology and Fertility of Soils. Heidelberg: Springer Nature, vol. 46, p. 727-738. E-ISSN 1432-0789. DOI https://doi.org/10.1007/s00374-010-0480-x http://repositorio.unne.edu.ar/handle/123456789/60111 eng https://doi.org/10.1007/s00374-010-0480-x closedAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 727-738 application/pdf Springer Nature Biology and Fertility of Soils, 2010, vol. 46, p. 727-738.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Phosphate-solubilizing bacteria
Plant growth-promoting bacteria
Rhizobacteria
Biofertilization
Bacterial diversity
spellingShingle Phosphate-solubilizing bacteria
Plant growth-promoting bacteria
Rhizobacteria
Biofertilization
Bacterial diversity
Collavino, Mónica Mariana
Sansberro, Pedro Alfonso
Mroginski, Luis Amado
Aguilar, Mario Orlando
Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
topic_facet Phosphate-solubilizing bacteria
Plant growth-promoting bacteria
Rhizobacteria
Biofertilization
Bacterial diversity
description To identify plant growth promotion ability of phosphorus-solubilizing native bacteria, we have examined a collection of isolates representing the diversity of culturable phosphate-solubilizing bacteria from acid soils of the northeast of Argentina. Assays in growth medium supplemented with tricalcium phosphate revealed different phosphorus solubilization activity and temporal patterns of solubilization. Acidification of the broth medium coincided with phosphorus solubilization. The isolates were grouped according to their Rep fingerprinting profiles and phylogenetically classified by 16S rDNA and biochemical analyses. These isolates were assigned to the genera Enterobacter, Pantoea, Pseudomonas, Acinetobacter, Burkholderia, and Exiguobacterium. Four isolates showing high phosphorus solubilizing activity in in vitro assays were inoculated on common beans (Phaseolus vulgaris); some of them promoted plant growth and increased photosynthesis and the P and N content of leaves. The results indicated that the ability to in vitro solubilize P is not necessarily associated to the promotion of plant growth.
format Artículo
author Collavino, Mónica Mariana
Sansberro, Pedro Alfonso
Mroginski, Luis Amado
Aguilar, Mario Orlando
author_facet Collavino, Mónica Mariana
Sansberro, Pedro Alfonso
Mroginski, Luis Amado
Aguilar, Mario Orlando
author_sort Collavino, Mónica Mariana
title Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
title_short Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
title_full Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
title_fullStr Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
title_full_unstemmed Comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote Phaseolus vulgaris growth
title_sort comparison of in vitro solubilization activity of diverse phosphate-solubilizing bacteria native to acid soil and their ability to promote phaseolus vulgaris growth
publisher Springer Nature
publishDate 2026
url http://repositorio.unne.edu.ar/handle/123456789/60111
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