Microbial Community Structure in Ancient European Arctic Peatlands
Northern peatlands, which are crucial reservoirs of carbon and nitrogen (415 ± 150 and 10 ± 7 Pg, respectively), are vulnerable to microbial mineralization after permafrost thaw. This study was carried out in four key sites containing northern permafrost peatland, which are located along the souther...
Published in: | Plants |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
MDPI
2022
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607101/ https://doi.org/10.3390/plants11202704 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:9607101 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:9607101 2023-05-15T15:10:08+02:00 Microbial Community Structure in Ancient European Arctic Peatlands Pastukhov, Alexander Kovaleva, Vera Kaverin, Dmitry 2022-10-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607101/ https://doi.org/10.3390/plants11202704 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607101/ http://dx.doi.org/10.3390/plants11202704 © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). CC-BY Plants (Basel) Article Text 2022 ftpubmed https://doi.org/10.3390/plants11202704 2022-10-30T01:20:00Z Northern peatlands, which are crucial reservoirs of carbon and nitrogen (415 ± 150 and 10 ± 7 Pg, respectively), are vulnerable to microbial mineralization after permafrost thaw. This study was carried out in four key sites containing northern permafrost peatland, which are located along the southern cryolithozone. The aim of this study is to characterize amino acids and the microbial community composition in peat strata along a climate gradient. Amino acids and microbiota diversity were studied by liquid chromatography and a quantitative polymerase chain reaction. The share of amino acid fragments was 2.6–7.8, and it is highly significantly correlated (r = 0.87, −0.74 and 0.67, p ˂ 0.05) with the organic nitrogen concentration in the soil, the C/N ratio, and δ(15)N. The data shows the existence of a large pool of microorganisms concentrated in permafrost peatlands, and a vertical continuum of bacteria, archaea, and microscopic fungi along the peat profile, due to the presence of microorganisms in each layer, throughout all the peat strata. There is no significant correlation between microorganism distribution and the plant macrofossil composition of the peat strata. Determining factors for the development of microorganism abundance are aeration and hydrothermal conditions. The availability of nitrogen will limit the ability of plants and microorganisms to respond to changing environmental conditions; however, with the increased decomposition of organic matter, amino acids will be released as organic sources of nitrogen stored in the protein material of peat-forming plants and microbial communities, which can also affect the organic nitrogen cycle. Text Arctic permafrost PubMed Central (PMC) Arctic Plants 11 20 2704 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Pastukhov, Alexander Kovaleva, Vera Kaverin, Dmitry Microbial Community Structure in Ancient European Arctic Peatlands |
topic_facet |
Article |
description |
Northern peatlands, which are crucial reservoirs of carbon and nitrogen (415 ± 150 and 10 ± 7 Pg, respectively), are vulnerable to microbial mineralization after permafrost thaw. This study was carried out in four key sites containing northern permafrost peatland, which are located along the southern cryolithozone. The aim of this study is to characterize amino acids and the microbial community composition in peat strata along a climate gradient. Amino acids and microbiota diversity were studied by liquid chromatography and a quantitative polymerase chain reaction. The share of amino acid fragments was 2.6–7.8, and it is highly significantly correlated (r = 0.87, −0.74 and 0.67, p ˂ 0.05) with the organic nitrogen concentration in the soil, the C/N ratio, and δ(15)N. The data shows the existence of a large pool of microorganisms concentrated in permafrost peatlands, and a vertical continuum of bacteria, archaea, and microscopic fungi along the peat profile, due to the presence of microorganisms in each layer, throughout all the peat strata. There is no significant correlation between microorganism distribution and the plant macrofossil composition of the peat strata. Determining factors for the development of microorganism abundance are aeration and hydrothermal conditions. The availability of nitrogen will limit the ability of plants and microorganisms to respond to changing environmental conditions; however, with the increased decomposition of organic matter, amino acids will be released as organic sources of nitrogen stored in the protein material of peat-forming plants and microbial communities, which can also affect the organic nitrogen cycle. |
format |
Text |
author |
Pastukhov, Alexander Kovaleva, Vera Kaverin, Dmitry |
author_facet |
Pastukhov, Alexander Kovaleva, Vera Kaverin, Dmitry |
author_sort |
Pastukhov, Alexander |
title |
Microbial Community Structure in Ancient European Arctic Peatlands |
title_short |
Microbial Community Structure in Ancient European Arctic Peatlands |
title_full |
Microbial Community Structure in Ancient European Arctic Peatlands |
title_fullStr |
Microbial Community Structure in Ancient European Arctic Peatlands |
title_full_unstemmed |
Microbial Community Structure in Ancient European Arctic Peatlands |
title_sort |
microbial community structure in ancient european arctic peatlands |
publisher |
MDPI |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607101/ https://doi.org/10.3390/plants11202704 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Plants (Basel) |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607101/ http://dx.doi.org/10.3390/plants11202704 |
op_rights |
© 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/plants11202704 |
container_title |
Plants |
container_volume |
11 |
container_issue |
20 |
container_start_page |
2704 |
_version_ |
1766341193703096320 |