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Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China

Understanding the response of soil properties and bacterial communities in rhizosphere soil to aridity and dune types is fundamental to desertification control. This study investigated soil properties and bacterial communities of both rhizosphere and bulk soils of Caragana microphylla from four site...

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Detalles Bibliográficos
Autores principales: Gao, Jiangli, Luo, Yang, Wei, Yali, Huang, Yaolong, Zhang, Hua, He, Wenliang, Sheng, Hongmei, An, Lizhe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6799922/
https://www.ncbi.nlm.nih.gov/pubmed/31626675
http://dx.doi.org/10.1371/journal.pone.0224195
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author Gao, Jiangli
Luo, Yang
Wei, Yali
Huang, Yaolong
Zhang, Hua
He, Wenliang
Sheng, Hongmei
An, Lizhe
author_facet Gao, Jiangli
Luo, Yang
Wei, Yali
Huang, Yaolong
Zhang, Hua
He, Wenliang
Sheng, Hongmei
An, Lizhe
author_sort Gao, Jiangli
collection PubMed
description Understanding the response of soil properties and bacterial communities in rhizosphere soil to aridity and dune types is fundamental to desertification control. This study investigated soil properties and bacterial communities of both rhizosphere and bulk soils of Caragana microphylla from four sites with different aridity indices, and one site with three different types of dunes. All sites were located in the desert regions of northern China. The results indicated that compared with the bulk soil, the soil nutrient content of rhizosphere, especially the content of total phosphorus, was generally significantly improved in different desertification environments. The bacterial richness and diversity were also higher than those of bulk soil, especially in arid regions and fixed dunes. Firmicutes, Actinobacteria, Proteobacteria, and Acidobacteria were the most dominant phyla in all samples. The regression analyses showed that at different sites, soil total organic C, total N, Na(+), and total P played key roles in determining the bacterial community structure while total organic carbon, electronic conductivity, pH and total phosphorus were the dominant factors at the different dunes. The results further revealed that the dominant phyla strongly affected by environmental factors at different sites were Acidobacteria, Gemmatimonadetes, and Actinobacteria among which, Acidobacteria and Gemmatimonadetes were negatively correlated with Na(+) content. At different types of dunes, Actinobacteria, Planctomycetes, and Gemmatimonadetes were particularly affected by environmental factors. The increased abundance of Actinobacteria in the rhizosphere soil was mainly caused by the decreased soil pH.
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spelling pubmed-67999222019-10-25 Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China Gao, Jiangli Luo, Yang Wei, Yali Huang, Yaolong Zhang, Hua He, Wenliang Sheng, Hongmei An, Lizhe PLoS One Research Article Understanding the response of soil properties and bacterial communities in rhizosphere soil to aridity and dune types is fundamental to desertification control. This study investigated soil properties and bacterial communities of both rhizosphere and bulk soils of Caragana microphylla from four sites with different aridity indices, and one site with three different types of dunes. All sites were located in the desert regions of northern China. The results indicated that compared with the bulk soil, the soil nutrient content of rhizosphere, especially the content of total phosphorus, was generally significantly improved in different desertification environments. The bacterial richness and diversity were also higher than those of bulk soil, especially in arid regions and fixed dunes. Firmicutes, Actinobacteria, Proteobacteria, and Acidobacteria were the most dominant phyla in all samples. The regression analyses showed that at different sites, soil total organic C, total N, Na(+), and total P played key roles in determining the bacterial community structure while total organic carbon, electronic conductivity, pH and total phosphorus were the dominant factors at the different dunes. The results further revealed that the dominant phyla strongly affected by environmental factors at different sites were Acidobacteria, Gemmatimonadetes, and Actinobacteria among which, Acidobacteria and Gemmatimonadetes were negatively correlated with Na(+) content. At different types of dunes, Actinobacteria, Planctomycetes, and Gemmatimonadetes were particularly affected by environmental factors. The increased abundance of Actinobacteria in the rhizosphere soil was mainly caused by the decreased soil pH. Public Library of Science 2019-10-18 /pmc/articles/PMC6799922/ /pubmed/31626675 http://dx.doi.org/10.1371/journal.pone.0224195 Text en © 2019 Gao et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Gao, Jiangli
Luo, Yang
Wei, Yali
Huang, Yaolong
Zhang, Hua
He, Wenliang
Sheng, Hongmei
An, Lizhe
Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title_full Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title_fullStr Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title_full_unstemmed Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title_short Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China
title_sort effect of aridity and dune type on rhizosphere soil bacterial communities of caragana microphylla in desert regions of northern china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6799922/
https://www.ncbi.nlm.nih.gov/pubmed/31626675
http://dx.doi.org/10.1371/journal.pone.0224195
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