Microbial community composition of transiently wetted Antarctic Dry Valley soils
During the summer months, wet (hyporheic) soils associated with ephemeral streams and lake edges in the Antarctic Dry Valleys (DVs) become hotspots of biological activity and are hypothesized to be an important source of carbon and nitrogen for arid DV soils. Recent research in the DV has focused on...
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ftpubmed:oai:pubmedcentral.nih.gov:4309182 2023-05-15T13:57:51+02:00 Microbial community composition of transiently wetted Antarctic Dry Valley soils Niederberger, Thomas D. Sohm, Jill A. Gunderson, Troy E. Parker, Alexander E. Tirindelli, Joëlle Capone, Douglas G. Carpenter, Edward J. Cary, Stephen C. 2015-01-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309182 http://www.ncbi.nlm.nih.gov/pubmed/25674080 https://doi.org/10.3389/fmicb.2015.00009 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25674080 http://dx.doi.org/10.3389/fmicb.2015.00009 Copyright © 2015 Niederberger, Sohm, Gunderson, Parker, Tirindelli, Capone, Carpenter and Cary. http://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) or licensor 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. CC-BY Microbiology Text 2015 ftpubmed https://doi.org/10.3389/fmicb.2015.00009 2015-02-15T00:55:04Z During the summer months, wet (hyporheic) soils associated with ephemeral streams and lake edges in the Antarctic Dry Valleys (DVs) become hotspots of biological activity and are hypothesized to be an important source of carbon and nitrogen for arid DV soils. Recent research in the DV has focused on the geochemistry and microbial ecology of lakes and arid soils, with substantially less information being available on hyporheic soils. Here, we determined the unique properties of hyporheic microbial communities, resolved their relationship to environmental parameters and compared them to archetypal arid DV soils. Generally, pH increased and chlorophyll a concentrations decreased along transects from wet to arid soils (9.0 to ~7.0 for pH and ~0.8 to ~5 μg/cm3 for chlorophyll a, respectively). Soil water content decreased to below ~3% in the arid soils. Community fingerprinting-based principle component analyses revealed that bacterial communities formed distinct clusters specific to arid and wet soils; however, eukaryotic communities that clustered together did not have similar soil moisture content nor did they group together based on sampling location. Collectively, rRNA pyrosequencing indicated a considerably higher abundance of Cyanobacteria in wet soils and a higher abundance of Acidobacterial, Actinobacterial, Deinococcus/Thermus, Bacteroidetes, Firmicutes, Gemmatimonadetes, Nitrospira, and Planctomycetes in arid soils. The two most significant differences at the genus level were Gillisia signatures present in arid soils and chloroplast signatures related to Streptophyta that were common in wet soils. Fungal dominance was observed in arid soils and Viridiplantae were more common in wet soils. This research represents an in-depth characterization of microbial communities inhabiting wet DV soils. Results indicate that the repeated wetting of hyporheic zones has a profound impact on the bacterial and eukaryotic communities inhabiting in these areas. Text Antarc* Antarctic PubMed Central (PMC) Antarctic The Antarctic Frontiers in Microbiology 6 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Microbiology |
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Microbiology Niederberger, Thomas D. Sohm, Jill A. Gunderson, Troy E. Parker, Alexander E. Tirindelli, Joëlle Capone, Douglas G. Carpenter, Edward J. Cary, Stephen C. Microbial community composition of transiently wetted Antarctic Dry Valley soils |
topic_facet |
Microbiology |
description |
During the summer months, wet (hyporheic) soils associated with ephemeral streams and lake edges in the Antarctic Dry Valleys (DVs) become hotspots of biological activity and are hypothesized to be an important source of carbon and nitrogen for arid DV soils. Recent research in the DV has focused on the geochemistry and microbial ecology of lakes and arid soils, with substantially less information being available on hyporheic soils. Here, we determined the unique properties of hyporheic microbial communities, resolved their relationship to environmental parameters and compared them to archetypal arid DV soils. Generally, pH increased and chlorophyll a concentrations decreased along transects from wet to arid soils (9.0 to ~7.0 for pH and ~0.8 to ~5 μg/cm3 for chlorophyll a, respectively). Soil water content decreased to below ~3% in the arid soils. Community fingerprinting-based principle component analyses revealed that bacterial communities formed distinct clusters specific to arid and wet soils; however, eukaryotic communities that clustered together did not have similar soil moisture content nor did they group together based on sampling location. Collectively, rRNA pyrosequencing indicated a considerably higher abundance of Cyanobacteria in wet soils and a higher abundance of Acidobacterial, Actinobacterial, Deinococcus/Thermus, Bacteroidetes, Firmicutes, Gemmatimonadetes, Nitrospira, and Planctomycetes in arid soils. The two most significant differences at the genus level were Gillisia signatures present in arid soils and chloroplast signatures related to Streptophyta that were common in wet soils. Fungal dominance was observed in arid soils and Viridiplantae were more common in wet soils. This research represents an in-depth characterization of microbial communities inhabiting wet DV soils. Results indicate that the repeated wetting of hyporheic zones has a profound impact on the bacterial and eukaryotic communities inhabiting in these areas. |
format |
Text |
author |
Niederberger, Thomas D. Sohm, Jill A. Gunderson, Troy E. Parker, Alexander E. Tirindelli, Joëlle Capone, Douglas G. Carpenter, Edward J. Cary, Stephen C. |
author_facet |
Niederberger, Thomas D. Sohm, Jill A. Gunderson, Troy E. Parker, Alexander E. Tirindelli, Joëlle Capone, Douglas G. Carpenter, Edward J. Cary, Stephen C. |
author_sort |
Niederberger, Thomas D. |
title |
Microbial community composition of transiently wetted Antarctic Dry Valley soils |
title_short |
Microbial community composition of transiently wetted Antarctic Dry Valley soils |
title_full |
Microbial community composition of transiently wetted Antarctic Dry Valley soils |
title_fullStr |
Microbial community composition of transiently wetted Antarctic Dry Valley soils |
title_full_unstemmed |
Microbial community composition of transiently wetted Antarctic Dry Valley soils |
title_sort |
microbial community composition of transiently wetted antarctic dry valley soils |
publisher |
Frontiers Media S.A. |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309182 http://www.ncbi.nlm.nih.gov/pubmed/25674080 https://doi.org/10.3389/fmicb.2015.00009 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25674080 http://dx.doi.org/10.3389/fmicb.2015.00009 |
op_rights |
Copyright © 2015 Niederberger, Sohm, Gunderson, Parker, Tirindelli, Capone, Carpenter and Cary. http://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) or licensor 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. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2015.00009 |
container_title |
Frontiers in Microbiology |
container_volume |
6 |
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1766265772706889728 |