Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic

Polar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of...

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Autores principales:	Siddarthan Venkatachalam, Vatharamattathil Mohanan Kannan, Vadakke Neelamanakesavan Saritha, Dinesh Sanka Loganathachetti, Mahesh Mohan, Kottekkatu Padinchati Krishnan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0
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spelling	oai:doaj.org-article:810dcdd90aeb493e9e2b4508e519dde02021-12-01T04:51:44ZBacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic1470-160X10.1016/j.ecolind.2021.107704https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde02021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003691https://doaj.org/toc/1470-160XPolar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of the samples collected from recently deglaciated sites comprised of less diverse, yet abundant bacterial groups compared to the samples from comparatively older sites, where the bacterial diversity was very rich and evenly distributed. Bacterial phyla viz. (a) Proteobacteria (14–44.58%) comprising classes of alpha- and gamma Proteobacteria along with (b) Actinobacteriota (8.8–33.8%) were predominantly distributed across the samples, while phyla Bacteroidota (up to 21%) was mainly distributed in the recently deglaciated samples and phyla Acidobacteriota (up to 24%) in deglaciated samples which were older. Bacterial families (Sulfurovaceae and Sulfurimonadaceae) affiliated with bio weathering of rocks for their energy metabolism was also detected in the present study from the recently deglaciated region. Bacterial genera belonging to Luteolibacter (up to 10.25%), Polaribacter (up to 12.32%), Acidimicrobium (6%) and Sulfitobacter (13.6%) were highly abundant in the recently deglaciated samples, while Candidatus_Udaeobacter (up to 17%) and RB41 (up to 10.5%) were found to be abundant in the older stage samples. Linear discriminant analysis revealed 121 Operational Taxonomic Units that could be attributed to the differences in the community diversity between the two groups. Among the analyzed environmental variables, pH, Cr, Cd and Ca significantly contributed to the differences in the bacterial community structure.Siddarthan VenkatachalamVatharamattathil Mohanan KannanVadakke Neelamanakesavan SarithaDinesh Sanka LoganathachettiMahesh MohanKottekkatu Padinchati KrishnanElsevierarticleGlacier forelandSoil developmentBacterial successionAmplicon sequencingEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107704- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5
spellingShingle	Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5 Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
description	Polar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of the samples collected from recently deglaciated sites comprised of less diverse, yet abundant bacterial groups compared to the samples from comparatively older sites, where the bacterial diversity was very rich and evenly distributed. Bacterial phyla viz. (a) Proteobacteria (14–44.58%) comprising classes of alpha- and gamma Proteobacteria along with (b) Actinobacteriota (8.8–33.8%) were predominantly distributed across the samples, while phyla Bacteroidota (up to 21%) was mainly distributed in the recently deglaciated samples and phyla Acidobacteriota (up to 24%) in deglaciated samples which were older. Bacterial families (Sulfurovaceae and Sulfurimonadaceae) affiliated with bio weathering of rocks for their energy metabolism was also detected in the present study from the recently deglaciated region. Bacterial genera belonging to Luteolibacter (up to 10.25%), Polaribacter (up to 12.32%), Acidimicrobium (6%) and Sulfitobacter (13.6%) were highly abundant in the recently deglaciated samples, while Candidatus_Udaeobacter (up to 17%) and RB41 (up to 10.5%) were found to be abundant in the older stage samples. Linear discriminant analysis revealed 121 Operational Taxonomic Units that could be attributed to the differences in the community diversity between the two groups. Among the analyzed environmental variables, pH, Cr, Cd and Ca significantly contributed to the differences in the bacterial community structure.
format	article
author	Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan
author_facet	Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan
author_sort	Siddarthan Venkatachalam
title	Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
title_short	Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
title_full	Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
title_fullStr	Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
title_full_unstemmed	Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
title_sort	bacterial diversity and community structure along the glacier foreland of midtre lovénbreen, svalbard, arctic
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0
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Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic

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