Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes
Arctic lakes emit methane (CH 4 ) to the atmosphere. The magnitude of this flux could increase with permafrost thaw but might also be mitigated by microbial CH4 oxidation. Methane oxidation in oxic water has been extensively studied, while the contribution of anaerobic oxidation of methane (AOM) to...
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Online Access: | https://hdl.handle.net/10037/19970 https://doi.org/10.1016/j.scitotenv.2020.139588 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19970 2023-05-15T14:59:56+02:00 Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes Cabrol, Lea Thalasso, Frederic Gandois, Laure Sepulveda-Jauregui, Armando Martinez-Cruz, Karla Teisserenc, Roman Tananaev, Nikita Tveit, Alexander Tøsdal Svenning, Mette M. Barret, Maialen 2020-05-25 https://hdl.handle.net/10037/19970 https://doi.org/10.1016/j.scitotenv.2020.139588 eng eng Elsevier Science of the Total Environment Cabrol, Thalasso, Gandois L, Sepulveda-Jauregui, Martinez-Cruz, Teisserenc, Tananaev N, Tveit AT, Svenning MM, Barret. Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes. Science of the Total Environment. 2020;736 FRIDAID 1845685 doi:10.1016/j.scitotenv.2020.139588 0048-9697 1879-1026 https://hdl.handle.net/10037/19970 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.scitotenv.2020.139588 2021-06-25T17:57:49Z Arctic lakes emit methane (CH 4 ) to the atmosphere. The magnitude of this flux could increase with permafrost thaw but might also be mitigated by microbial CH4 oxidation. Methane oxidation in oxic water has been extensively studied, while the contribution of anaerobic oxidation of methane (AOM) to CH 4 mitigation is not fully understood. We have investigated four Northern Siberian stratified lakes in an area of discontinuous permafrost nearby Igarka, Russia. Analyses of CH 4 concentrations in the water column demonstrated that 60 to 100% of upward diffusing CH 4 was oxidized in the anoxic layers of the four lakes. A combination of pmo A and mcr A gene qPCR and 16S rRNA gene metabarcoding showed that the same taxa, all within Methylomonadaceae and including the predominant genus Methylobacter as well as Crenothrix , could be the major methane-oxidizing bacteria (MOB) in the anoxic water of the four lakes. Correlation between Methylomonadaceae and OTUs within Methylotenera , Geothrix and Geobacter genera indicated that AOM might occur in an interaction between MOB, denitrifiers and iron-cycling partners. We conclude that MOB within Methylomonadaceae could have a crucial impact on CH 4 cycling in these Siberian Arctic lakes by mitigating the majority of produced CH 4 before it leaves the anoxic zone. This finding emphasizes the importance of AOM by Methylomonadaceae and extends our knowledge about CH 4 cycle in lakes, a crucial component of the global CH 4 cycle. Article in Journal/Newspaper Arctic permafrost University of Tromsø: Munin Open Research Archive Arctic Four Lakes ENVELOPE(-126.826,-126.826,54.858,54.858) Igarka ENVELOPE(86.603,86.603,67.466,67.466) Science of The Total Environment 736 139588 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Cabrol, Lea Thalasso, Frederic Gandois, Laure Sepulveda-Jauregui, Armando Martinez-Cruz, Karla Teisserenc, Roman Tananaev, Nikita Tveit, Alexander Tøsdal Svenning, Mette M. Barret, Maialen Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Arctic lakes emit methane (CH 4 ) to the atmosphere. The magnitude of this flux could increase with permafrost thaw but might also be mitigated by microbial CH4 oxidation. Methane oxidation in oxic water has been extensively studied, while the contribution of anaerobic oxidation of methane (AOM) to CH 4 mitigation is not fully understood. We have investigated four Northern Siberian stratified lakes in an area of discontinuous permafrost nearby Igarka, Russia. Analyses of CH 4 concentrations in the water column demonstrated that 60 to 100% of upward diffusing CH 4 was oxidized in the anoxic layers of the four lakes. A combination of pmo A and mcr A gene qPCR and 16S rRNA gene metabarcoding showed that the same taxa, all within Methylomonadaceae and including the predominant genus Methylobacter as well as Crenothrix , could be the major methane-oxidizing bacteria (MOB) in the anoxic water of the four lakes. Correlation between Methylomonadaceae and OTUs within Methylotenera , Geothrix and Geobacter genera indicated that AOM might occur in an interaction between MOB, denitrifiers and iron-cycling partners. We conclude that MOB within Methylomonadaceae could have a crucial impact on CH 4 cycling in these Siberian Arctic lakes by mitigating the majority of produced CH 4 before it leaves the anoxic zone. This finding emphasizes the importance of AOM by Methylomonadaceae and extends our knowledge about CH 4 cycle in lakes, a crucial component of the global CH 4 cycle. |
format |
Article in Journal/Newspaper |
author |
Cabrol, Lea Thalasso, Frederic Gandois, Laure Sepulveda-Jauregui, Armando Martinez-Cruz, Karla Teisserenc, Roman Tananaev, Nikita Tveit, Alexander Tøsdal Svenning, Mette M. Barret, Maialen |
author_facet |
Cabrol, Lea Thalasso, Frederic Gandois, Laure Sepulveda-Jauregui, Armando Martinez-Cruz, Karla Teisserenc, Roman Tananaev, Nikita Tveit, Alexander Tøsdal Svenning, Mette M. Barret, Maialen |
author_sort |
Cabrol, Lea |
title |
Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
title_short |
Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
title_full |
Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
title_fullStr |
Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
title_full_unstemmed |
Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes |
title_sort |
anaerobic oxidation of methane and associated microbiome in anoxic water of northwestern siberian lakes |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19970 https://doi.org/10.1016/j.scitotenv.2020.139588 |
long_lat |
ENVELOPE(-126.826,-126.826,54.858,54.858) ENVELOPE(86.603,86.603,67.466,67.466) |
geographic |
Arctic Four Lakes Igarka |
geographic_facet |
Arctic Four Lakes Igarka |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_relation |
Science of the Total Environment Cabrol, Thalasso, Gandois L, Sepulveda-Jauregui, Martinez-Cruz, Teisserenc, Tananaev N, Tveit AT, Svenning MM, Barret. Anaerobic oxidation of methane and associated microbiome in anoxic water of Northwestern Siberian lakes. Science of the Total Environment. 2020;736 FRIDAID 1845685 doi:10.1016/j.scitotenv.2020.139588 0048-9697 1879-1026 https://hdl.handle.net/10037/19970 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.scitotenv.2020.139588 |
container_title |
Science of The Total Environment |
container_volume |
736 |
container_start_page |
139588 |
_version_ |
1766332057005326336 |