2022
DOI: 10.1101/2022.11.23.517749
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Physiological adaptation of sulfate reducing bacteria in syntrophic partnership with anaerobic methanotrophic archaea

Abstract: Sulfate-coupled anaerobic oxidation of methane (AOM) is performed by multicellular consortia of anaerobic methanotrophic archaea (ANME) in obligate syntrophic partnership with sulfate-reducing bacteria (SRB). Diverse ANME and SRB clades co-associate but the physiological basis for their adaptation and diversification is not well understood. In this work, we explore the metabolic adaptation of four syntrophic SRB clades (HotSeep-1, Seep-SRB2, Seep-SRB1a and Seep-SRB1g) from a phylogenomics perspective, tracing … Show more

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Cited by 4 publications
(3 citation statements)
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“…AOM is performed by anaerobic methanotrophic archaea (ANME). Normally ANME rely on a syntrophic partner to couple CH4 oxidation to the reduction of terminal electron acceptors, such as sulfate, iron, nitrate, and manganese 5,6 . AOM coupled to sulfate reduction is the primary biological process in seep sediments since sulfate is the dominant anion present at the marine sediment-water interface.…”
Section: Background and Summarymentioning
confidence: 99%
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“…AOM is performed by anaerobic methanotrophic archaea (ANME). Normally ANME rely on a syntrophic partner to couple CH4 oxidation to the reduction of terminal electron acceptors, such as sulfate, iron, nitrate, and manganese 5,6 . AOM coupled to sulfate reduction is the primary biological process in seep sediments since sulfate is the dominant anion present at the marine sediment-water interface.…”
Section: Background and Summarymentioning
confidence: 99%
“…To identify ANME and syntrophic SRB lineages in seeps, we constructed phylogenomic trees of ANME and syntrophic SRB based on archaeal and bacterial single-copy marker genes, respectively. We collected 41 previously published ANME genomes [25][26][27][28][29][30][31][32][33] , including all of the currently described subclades (ANME-1, ANME-2a, ANME-2b, ANME-2c, ANME-2d, and ANME-3), as well as 60 SRB genomes, including syntrophic (HotSeep-1, Seep-SRB2, Seep-SRB1a, and Seep-SRB1g) and non-syntrophic SRB [34][35][36][37] . According to the phylogenomic distance, we found 81 ANME genomes spanning five subclades including ANME-1 (n = 38), ANME-2a (n = 16), ANME-2b (n = 1), ANME-2c (n = 24), and ANME-3 (n = 2) (Fig.…”
Section: Background and Summarymentioning
confidence: 99%
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