Cargando…

Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient

Elevational gradients strongly affect the spatial distribution and structure of soil bacterial communities. However, our understanding of the effects and determining factors is still limited, especially in the deep soil layer. Here, we investigated the diversity and composition of soil bacterial com...

Descripción completa

Detalles Bibliográficos
Autores principales: Tian, Qiuxiang, Jiang, Ying, Tang, Yanan, Wu, Yu, Tang, Zhiyao, Liu, Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8363232/
https://www.ncbi.nlm.nih.gov/pubmed/34394018
http://dx.doi.org/10.3389/fmicb.2021.646124
_version_ 1783738312443297792
author Tian, Qiuxiang
Jiang, Ying
Tang, Yanan
Wu, Yu
Tang, Zhiyao
Liu, Feng
author_facet Tian, Qiuxiang
Jiang, Ying
Tang, Yanan
Wu, Yu
Tang, Zhiyao
Liu, Feng
author_sort Tian, Qiuxiang
collection PubMed
description Elevational gradients strongly affect the spatial distribution and structure of soil bacterial communities. However, our understanding of the effects and determining factors is still limited, especially in the deep soil layer. Here, we investigated the diversity and composition of soil bacterial communities in different soil layers along a 1,500-m elevational gradient in the Taibai Mountain. The variables associated with climate conditions, plant communities, and soil properties were analyzed to assess their contributions to the variations in bacterial communities. Soil bacterial richness and α-diversity showed a hump-shaped trend with elevation in both surface and deep layers. In the surface layer, pH was the main factor driving the elevational pattern in bacterial diversity, while in the deep layer, pH and soil carbon (C) availability were the two main predictors. Bacterial community composition differed significantly along the elevational gradient in all soil layers. In the surface layer, Acidobacteria, Delta-proteobacteria, and Planctomycetes were significantly more abundant in the lower elevation sites than in the higher elevation sites; and Gemmatimonadetes, Chloroflexi, and Beta-proteobacteria were more abundant in the higher elevation sites. In the deep layer, AD3 was most abundant in the highest elevation site. The elevational pattern of community composition co-varied with mean annual temperature, mean annual precipitation, diversity and basal area of trees, pH, soil C availability, and soil C fractions. Statistical results showed that pH was the main driver of the elevational pattern of the bacterial community composition in the surface soil layer, while soil C fractions contributed more to the variance of the bacterial composition in the deep soil layer. These results indicated that changes in soil bacterial communities along the elevational gradient were driven by soil properties in both surface and deep soil layers, which are critical for predicting ecosystem functions under future climate change scenarios.
format Online
Article
Text
id pubmed-8363232
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-83632322021-08-14 Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient Tian, Qiuxiang Jiang, Ying Tang, Yanan Wu, Yu Tang, Zhiyao Liu, Feng Front Microbiol Microbiology Elevational gradients strongly affect the spatial distribution and structure of soil bacterial communities. However, our understanding of the effects and determining factors is still limited, especially in the deep soil layer. Here, we investigated the diversity and composition of soil bacterial communities in different soil layers along a 1,500-m elevational gradient in the Taibai Mountain. The variables associated with climate conditions, plant communities, and soil properties were analyzed to assess their contributions to the variations in bacterial communities. Soil bacterial richness and α-diversity showed a hump-shaped trend with elevation in both surface and deep layers. In the surface layer, pH was the main factor driving the elevational pattern in bacterial diversity, while in the deep layer, pH and soil carbon (C) availability were the two main predictors. Bacterial community composition differed significantly along the elevational gradient in all soil layers. In the surface layer, Acidobacteria, Delta-proteobacteria, and Planctomycetes were significantly more abundant in the lower elevation sites than in the higher elevation sites; and Gemmatimonadetes, Chloroflexi, and Beta-proteobacteria were more abundant in the higher elevation sites. In the deep layer, AD3 was most abundant in the highest elevation site. The elevational pattern of community composition co-varied with mean annual temperature, mean annual precipitation, diversity and basal area of trees, pH, soil C availability, and soil C fractions. Statistical results showed that pH was the main driver of the elevational pattern of the bacterial community composition in the surface soil layer, while soil C fractions contributed more to the variance of the bacterial composition in the deep soil layer. These results indicated that changes in soil bacterial communities along the elevational gradient were driven by soil properties in both surface and deep soil layers, which are critical for predicting ecosystem functions under future climate change scenarios. Frontiers Media S.A. 2021-07-30 /pmc/articles/PMC8363232/ /pubmed/34394018 http://dx.doi.org/10.3389/fmicb.2021.646124 Text en Copyright © 2021 Tian, Jiang, Tang, Wu, Tang and Liu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Tian, Qiuxiang
Jiang, Ying
Tang, Yanan
Wu, Yu
Tang, Zhiyao
Liu, Feng
Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title_full Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title_fullStr Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title_full_unstemmed Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title_short Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient
title_sort soil ph and organic carbon properties drive soil bacterial communities in surface and deep layers along an elevational gradient
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8363232/
https://www.ncbi.nlm.nih.gov/pubmed/34394018
http://dx.doi.org/10.3389/fmicb.2021.646124
work_keys_str_mv AT tianqiuxiang soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient
AT jiangying soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient
AT tangyanan soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient
AT wuyu soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient
AT tangzhiyao soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient
AT liufeng soilphandorganiccarbonpropertiesdrivesoilbacterialcommunitiesinsurfaceanddeeplayersalonganelevationalgradient