Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov.
We isolated a methanogen from deep in the sediments of the Nankai Trough off the eastern coast of Japan. At the sampling site, the water was 950 m deep and the sediment core was collected at 247 m below the sediment surface. The isolated methanogen was named Nankai-1. Cells of Nankai-1 were nonmotil...
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ftpubmed:oai:pubmedcentral.nih.gov:161549 2023-05-15T17:12:09+02:00 Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. Mikucki, Jill A. Liu, Yitai Delwiche, Mark Colwell, Frederick S. Boone, David R. 2003-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC161549 http://www.ncbi.nlm.nih.gov/pubmed/12788731 https://doi.org/10.1128/AEM.69.6.3311-3316.2003 en eng American Society for Microbiology http://www.ncbi.nlm.nih.gov/pmc/articles/PMC161549 http://www.ncbi.nlm.nih.gov/pubmed/12788731 http://dx.doi.org/10.1128/AEM.69.6.3311-3316.2003 Copyright © 2003, American Society for Microbiology Geomicrobiology Text 2003 ftpubmed https://doi.org/10.1128/AEM.69.6.3311-3316.2003 2013-08-29T12:21:09Z We isolated a methanogen from deep in the sediments of the Nankai Trough off the eastern coast of Japan. At the sampling site, the water was 950 m deep and the sediment core was collected at 247 m below the sediment surface. The isolated methanogen was named Nankai-1. Cells of Nankai-1 were nonmotile and highly irregular coccoids (average diameter, 0.8 to 2 μm) and grew with hydrogen or formate as a catabolic substrate. Cells required acetate as a carbon source. Yeast extract and peptones were not required but increased the growth rate. The cells were mesophilic, growing most rapidly at 45°C (no growth at ≤10°C or ≥55°C). Cells grew with a maximum specific growth rate of 2.43 day−1 at 45°C. Cells grew at pH values between 5.0 and 8.7 but did not grow at pH 4.7 or 9.0. Strain Nankai-1 grew in a wide range of salinities, from 0.1 to 1.5 M Na+. The described phenotypic characteristics of this novel isolate were consistent with the in situ environment of the Nankai Trough. This is the first report of a methanogenic isolate from methane hydrate-bearing sediments. Phylogenetic analysis of its 16S rRNA gene sequence indicated that it is most closely related to Methanoculleus marisnigri (99.1% sequence similarity), but DNA hybridization experiments indicated a DNA sequence similarity of only 49%. Strain Nankai-1 was also found to be phenotypically similar to M. marisnigri, but two major phenotypic differences were found: strain Nankai-1 does not require peptones, and it grows fastest at a much higher temperature. We propose a new species, Methanoculleus submarinus, with strain Nankai-1 as the type strain. Text Methane hydrate PubMed Central (PMC) Applied and Environmental Microbiology 69 6 3311 3316 |
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Geomicrobiology Mikucki, Jill A. Liu, Yitai Delwiche, Mark Colwell, Frederick S. Boone, David R. Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
topic_facet |
Geomicrobiology |
description |
We isolated a methanogen from deep in the sediments of the Nankai Trough off the eastern coast of Japan. At the sampling site, the water was 950 m deep and the sediment core was collected at 247 m below the sediment surface. The isolated methanogen was named Nankai-1. Cells of Nankai-1 were nonmotile and highly irregular coccoids (average diameter, 0.8 to 2 μm) and grew with hydrogen or formate as a catabolic substrate. Cells required acetate as a carbon source. Yeast extract and peptones were not required but increased the growth rate. The cells were mesophilic, growing most rapidly at 45°C (no growth at ≤10°C or ≥55°C). Cells grew with a maximum specific growth rate of 2.43 day−1 at 45°C. Cells grew at pH values between 5.0 and 8.7 but did not grow at pH 4.7 or 9.0. Strain Nankai-1 grew in a wide range of salinities, from 0.1 to 1.5 M Na+. The described phenotypic characteristics of this novel isolate were consistent with the in situ environment of the Nankai Trough. This is the first report of a methanogenic isolate from methane hydrate-bearing sediments. Phylogenetic analysis of its 16S rRNA gene sequence indicated that it is most closely related to Methanoculleus marisnigri (99.1% sequence similarity), but DNA hybridization experiments indicated a DNA sequence similarity of only 49%. Strain Nankai-1 was also found to be phenotypically similar to M. marisnigri, but two major phenotypic differences were found: strain Nankai-1 does not require peptones, and it grows fastest at a much higher temperature. We propose a new species, Methanoculleus submarinus, with strain Nankai-1 as the type strain. |
format |
Text |
author |
Mikucki, Jill A. Liu, Yitai Delwiche, Mark Colwell, Frederick S. Boone, David R. |
author_facet |
Mikucki, Jill A. Liu, Yitai Delwiche, Mark Colwell, Frederick S. Boone, David R. |
author_sort |
Mikucki, Jill A. |
title |
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
title_short |
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
title_full |
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
title_fullStr |
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
title_full_unstemmed |
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov. |
title_sort |
isolation of a methanogen from deep marine sediments that contain methane hydrates, and description of methanoculleus submarinus sp. nov. |
publisher |
American Society for Microbiology |
publishDate |
2003 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC161549 http://www.ncbi.nlm.nih.gov/pubmed/12788731 https://doi.org/10.1128/AEM.69.6.3311-3316.2003 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC161549 http://www.ncbi.nlm.nih.gov/pubmed/12788731 http://dx.doi.org/10.1128/AEM.69.6.3311-3316.2003 |
op_rights |
Copyright © 2003, American Society for Microbiology |
op_doi |
https://doi.org/10.1128/AEM.69.6.3311-3316.2003 |
container_title |
Applied and Environmental Microbiology |
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69 |
container_issue |
6 |
container_start_page |
3311 |
op_container_end_page |
3316 |
_version_ |
1766068932633952256 |