Microbial communities from arid environments on a global scale. A systematic review

Abstract Arid environments are defined by the lack of water availability, which is directly related to the mean annual precipitation (MAP), and high values of solar irradiation, which impacts the community composition of animals, plants, and the microbial structure of the soil. Recent advances in NG...

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Autores principales:	Vásquez-Dean,Javiera, Maza,Felipe, Morel,Isidora, Pulgar,Rodrigo, González,Mauricio
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2020
Materias:	Arid soil Microbiomes NGS Systematic review Global-scale
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602020000100502
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spelling	oai:scielo:S0716-976020200001005022020-07-27Microbial communities from arid environments on a global scale. A systematic reviewVásquez-Dean,JavieraMaza,FelipeMorel,IsidoraPulgar,RodrigoGonzález,Mauricio Arid soil Microbiomes NGS Systematic review Global-scale Abstract Arid environments are defined by the lack of water availability, which is directly related to the mean annual precipitation (MAP), and high values of solar irradiation, which impacts the community composition of animals, plants, and the microbial structure of the soil. Recent advances in NGS technologies have expanded our ability to characterize micro- biomes, allowing environmental microbiologists to explore the complete microbial structure. Intending to identify and describe the state-of-the-art of bacterial communities in arid soils at a global scale, and to address the effect that some environmental features may have on them, we performed a systematic review based on the PRISMA guideline. Using a combination of keywords, we identified a collection of 66 studies, including 327 sampled sites, reporting the arid soil bacterial community composition by 16S rDNA gene high-throughput sequencing. To identify factors that can modulate bacterial communities, we extracted the geographical, environmental, and physicochemical data. The results indicate that even though each sampled site was catalogued as arid, they show wide variability in altitude, mean annual temperature (MAT), soil pH and electric conductivity, within and between arid environments. We show that arid soils display a higher abundance of Actinobacteria and lower abundance of Proteobacteria, Cyanobacteria, and Planctomycetes, compared with non-arid soil microbiomes, revealing that microbial structure seems to be strongly modulated by MAP and MAT and not by pH in arid soils. We observed that environmental and physicochemical features were scarcely described among studies, hence, we propose a reporting guideline for further analysis, which will allow deepening the knowledge of the relationship between the microbiome and abiotic factors in arid soil. Finally, to understand the academic collaborations landscape, we developed an analysis of the author's network, corroborating a low degree of connectivity and collaborations in this research topic. Considering that it is crucial to understand how microbial processes develop and change in arid soils, our analysis emphasizes the need to increase collaborations between research groups worldwide.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.53 20202020-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602020000100502en10.1186/s40659-020-00296-1
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Arid soil Microbiomes NGS Systematic review Global-scale
spellingShingle	Arid soil Microbiomes NGS Systematic review Global-scale Vásquez-Dean,Javiera Maza,Felipe Morel,Isidora Pulgar,Rodrigo González,Mauricio Microbial communities from arid environments on a global scale. A systematic review
description	Abstract Arid environments are defined by the lack of water availability, which is directly related to the mean annual precipitation (MAP), and high values of solar irradiation, which impacts the community composition of animals, plants, and the microbial structure of the soil. Recent advances in NGS technologies have expanded our ability to characterize micro- biomes, allowing environmental microbiologists to explore the complete microbial structure. Intending to identify and describe the state-of-the-art of bacterial communities in arid soils at a global scale, and to address the effect that some environmental features may have on them, we performed a systematic review based on the PRISMA guideline. Using a combination of keywords, we identified a collection of 66 studies, including 327 sampled sites, reporting the arid soil bacterial community composition by 16S rDNA gene high-throughput sequencing. To identify factors that can modulate bacterial communities, we extracted the geographical, environmental, and physicochemical data. The results indicate that even though each sampled site was catalogued as arid, they show wide variability in altitude, mean annual temperature (MAT), soil pH and electric conductivity, within and between arid environments. We show that arid soils display a higher abundance of Actinobacteria and lower abundance of Proteobacteria, Cyanobacteria, and Planctomycetes, compared with non-arid soil microbiomes, revealing that microbial structure seems to be strongly modulated by MAP and MAT and not by pH in arid soils. We observed that environmental and physicochemical features were scarcely described among studies, hence, we propose a reporting guideline for further analysis, which will allow deepening the knowledge of the relationship between the microbiome and abiotic factors in arid soil. Finally, to understand the academic collaborations landscape, we developed an analysis of the author's network, corroborating a low degree of connectivity and collaborations in this research topic. Considering that it is crucial to understand how microbial processes develop and change in arid soils, our analysis emphasizes the need to increase collaborations between research groups worldwide.
author	Vásquez-Dean,Javiera Maza,Felipe Morel,Isidora Pulgar,Rodrigo González,Mauricio
author_facet	Vásquez-Dean,Javiera Maza,Felipe Morel,Isidora Pulgar,Rodrigo González,Mauricio
author_sort	Vásquez-Dean,Javiera
title	Microbial communities from arid environments on a global scale. A systematic review
title_short	Microbial communities from arid environments on a global scale. A systematic review
title_full	Microbial communities from arid environments on a global scale. A systematic review
title_fullStr	Microbial communities from arid environments on a global scale. A systematic review
title_full_unstemmed	Microbial communities from arid environments on a global scale. A systematic review
title_sort	microbial communities from arid environments on a global scale. a systematic review
publisher	Sociedad de Biología de Chile
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602020000100502
work_keys_str_mv	AT vasquezdeanjaviera microbialcommunitiesfromaridenvironmentsonaglobalscaleasystematicreview AT mazafelipe microbialcommunitiesfromaridenvironmentsonaglobalscaleasystematicreview AT morelisidora microbialcommunitiesfromaridenvironmentsonaglobalscaleasystematicreview AT pulgarrodrigo microbialcommunitiesfromaridenvironmentsonaglobalscaleasystematicreview AT gonzalezmauricio microbialcommunitiesfromaridenvironmentsonaglobalscaleasystematicreview
_version_	1718441612104695808

Microbial communities from arid environments on a global scale. A systematic review

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