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Title: Methanogenesis and Salt Tolerance Genes of a Novel Halophilic Methanosarcinaceae Metagenome-Assembled Genome from a Former Solar Saltern

Abstract

Anaerobic archaeal methanogens are key players in the global carbon cycle due to their role in the final stages of organic matter decomposition in anaerobic environments such as wetland sediments. Here we present the first draft metagenome-assembled genome (MAG) sequence of an unclassified Methanosarcinaceae methanogen phylogenetically placed adjacent to the Methanolobus and Methanomethylovorans genera that appears to be a distinct genus and species. The genome is derived from sediments of a hypersaline (97–148 ppt chloride) unrestored industrial saltern that has been observed to be a significant methane source. The source sediment is more saline than previous sources of Methanolobus and Methanomethylovorans. We propose a new genus name, Methanosalis, to house this genome, which we designate with the strain name SBSPR1A. The MAG was binned with CONCOCT and then improved via scaffold extension and reassembly. The genome contains pathways for methylotrophic methanogenesis from trimethylamine and dimethylamine, as well as genes for the synthesis and transport of compatible solutes. Some genes involved in acetoclastic and hydrogenotrophic methanogenesis are present, but those pathways appear incomplete in the genome. The MAG was more abundant in two former industrial salterns than in a nearby reference wetland and a restored wetland, both of which have muchmore » lower salinity levels, as well as significantly lower methane emissions than the salterns.« less

Authors:
ORCiD logo; ; ; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1825793
Alternate Identifier(s):
OSTI ID: 1834587
Grant/Contract Number:  
KP/CH57/1; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Genes
Additional Journal Information:
Journal Name: Genes Journal Volume: 12 Journal Issue: 10; Journal ID: ISSN 2073-4425
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; methanogensis; salt tolerance; anaerobic; archaea; phylogenomics

Citation Formats

Bueno de Mesquita, Clifton P., Zhou, Jinglie, Theroux, Susanna M., and Tringe, Susannah G. Methanogenesis and Salt Tolerance Genes of a Novel Halophilic Methanosarcinaceae Metagenome-Assembled Genome from a Former Solar Saltern. Switzerland: N. p., 2021. Web. doi:10.3390/genes12101609.
Bueno de Mesquita, Clifton P., Zhou, Jinglie, Theroux, Susanna M., & Tringe, Susannah G. Methanogenesis and Salt Tolerance Genes of a Novel Halophilic Methanosarcinaceae Metagenome-Assembled Genome from a Former Solar Saltern. Switzerland. https://doi.org/10.3390/genes12101609
Bueno de Mesquita, Clifton P., Zhou, Jinglie, Theroux, Susanna M., and Tringe, Susannah G. Wed . "Methanogenesis and Salt Tolerance Genes of a Novel Halophilic Methanosarcinaceae Metagenome-Assembled Genome from a Former Solar Saltern". Switzerland. https://doi.org/10.3390/genes12101609.
@article{osti_1825793,
title = {Methanogenesis and Salt Tolerance Genes of a Novel Halophilic Methanosarcinaceae Metagenome-Assembled Genome from a Former Solar Saltern},
author = {Bueno de Mesquita, Clifton P. and Zhou, Jinglie and Theroux, Susanna M. and Tringe, Susannah G.},
abstractNote = {Anaerobic archaeal methanogens are key players in the global carbon cycle due to their role in the final stages of organic matter decomposition in anaerobic environments such as wetland sediments. Here we present the first draft metagenome-assembled genome (MAG) sequence of an unclassified Methanosarcinaceae methanogen phylogenetically placed adjacent to the Methanolobus and Methanomethylovorans genera that appears to be a distinct genus and species. The genome is derived from sediments of a hypersaline (97–148 ppt chloride) unrestored industrial saltern that has been observed to be a significant methane source. The source sediment is more saline than previous sources of Methanolobus and Methanomethylovorans. We propose a new genus name, Methanosalis, to house this genome, which we designate with the strain name SBSPR1A. The MAG was binned with CONCOCT and then improved via scaffold extension and reassembly. The genome contains pathways for methylotrophic methanogenesis from trimethylamine and dimethylamine, as well as genes for the synthesis and transport of compatible solutes. Some genes involved in acetoclastic and hydrogenotrophic methanogenesis are present, but those pathways appear incomplete in the genome. The MAG was more abundant in two former industrial salterns than in a nearby reference wetland and a restored wetland, both of which have much lower salinity levels, as well as significantly lower methane emissions than the salterns.},
doi = {10.3390/genes12101609},
journal = {Genes},
number = 10,
volume = 12,
place = {Switzerland},
year = {2021},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
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https://doi.org/10.3390/genes12101609

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