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Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures

Natural grasslands provide a valuable resource for livestock grazing. In many parts of South America, legume overseeding and P fertilization are commonly used to enhance primary productivity. The effect of this practice on the plant community is well established. However, how this management regime...

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Autores principales: Azziz, Gastón, Frade, Cristina, Igual, José M., del Pino, Amabelia, Lezama, Felipe, Valverde, Ángel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10302908/
https://www.ncbi.nlm.nih.gov/pubmed/37374885
http://dx.doi.org/10.3390/microorganisms11061383
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author Azziz, Gastón
Frade, Cristina
Igual, José M.
del Pino, Amabelia
Lezama, Felipe
Valverde, Ángel
author_facet Azziz, Gastón
Frade, Cristina
Igual, José M.
del Pino, Amabelia
Lezama, Felipe
Valverde, Ángel
author_sort Azziz, Gastón
collection PubMed
description Natural grasslands provide a valuable resource for livestock grazing. In many parts of South America, legume overseeding and P fertilization are commonly used to enhance primary productivity. The effect of this practice on the plant community is well established. However, how this management regime affects the soil microbiome is less known. Here, to contribute to filling this knowledge gap, we analyzed the effect of Lotus subbiflorus overseeding, together with P fertilization, on soil microbial community diversity and activity in the Uruguayan Pampa region. The results showed that plant communities in the natural grassland paddocks significantly differed from those of the managed paddocks. In contrast, neither microbial biomass and respiration nor microbial diversity was significantly affected by management, although the structure of the bacterial and fungal communities were correlated with those of the plant communities. AM Fungi relative abundance, as well as several enzyme activities, were significantly affected by management. This could have consequences for the C, N, and P content of SOM in these soils, which in turn might affect SOM degradation.
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spelling pubmed-103029082023-06-29 Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures Azziz, Gastón Frade, Cristina Igual, José M. del Pino, Amabelia Lezama, Felipe Valverde, Ángel Microorganisms Article Natural grasslands provide a valuable resource for livestock grazing. In many parts of South America, legume overseeding and P fertilization are commonly used to enhance primary productivity. The effect of this practice on the plant community is well established. However, how this management regime affects the soil microbiome is less known. Here, to contribute to filling this knowledge gap, we analyzed the effect of Lotus subbiflorus overseeding, together with P fertilization, on soil microbial community diversity and activity in the Uruguayan Pampa region. The results showed that plant communities in the natural grassland paddocks significantly differed from those of the managed paddocks. In contrast, neither microbial biomass and respiration nor microbial diversity was significantly affected by management, although the structure of the bacterial and fungal communities were correlated with those of the plant communities. AM Fungi relative abundance, as well as several enzyme activities, were significantly affected by management. This could have consequences for the C, N, and P content of SOM in these soils, which in turn might affect SOM degradation. MDPI 2023-05-24 /pmc/articles/PMC10302908/ /pubmed/37374885 http://dx.doi.org/10.3390/microorganisms11061383 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Azziz, Gastón
Frade, Cristina
Igual, José M.
del Pino, Amabelia
Lezama, Felipe
Valverde, Ángel
Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title_full Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title_fullStr Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title_full_unstemmed Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title_short Legume Overseeding and P Fertilization Increases Microbial Activity and Decreases the Relative Abundance of AM Fungi in Pampas Natural Pastures
title_sort legume overseeding and p fertilization increases microbial activity and decreases the relative abundance of am fungi in pampas natural pastures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10302908/
https://www.ncbi.nlm.nih.gov/pubmed/37374885
http://dx.doi.org/10.3390/microorganisms11061383
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