ArticleBMC biology2019
Metagenomes and metatranscriptomes shed new light on the microbial-mediated sulfur cycle in a Siberian soda lake.
Article in BMC biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.
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Who cites it
56 citing papers in PubMed, 120 citations in OpenAlex.
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- Archaeal and Bacterial Communities Within the Wetland Alkaline Har Lake of the Qinghai-Xizang Plateau.Current microbiology · 2025Article
- Characterization of Tetrathionate Hydrolase from Acidothermophilic Sulfur-Oxidizing ArchaeonInternational journal of molecular sciences · 2025Article
- Syntrophic Interaction between an Anoxygenic Photosynthetic Bacterium and a Tetrathionate-reducing Bacterium in Anaerobic Benzoate Degradation.Microbes and environments · 2025Article
- Microbial communities of selected regions of the Deep Springs Lake aquifer system.Frontiers in microbiology · 2025Article
- Biogeography of soda lake microbiome and uneven cross-continent transition rates.Frontiers in microbiology · 2025Article
- Growth physiology, genomics, and proteomics ofFrontiers in microbiology · 2025Article
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- Lineage-dependent partitioning of activities in chemoclines defines Woesearchaeota ecotypes in an extreme aquatic ecosystem.Microbiome · 2024Article
- Ecology and biogeochemistry of the microbial underworld in two sister soda lakes.Environmental microbiome · 2024Article
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- RNA-guided RNA silencing by an Asgard archaeal Argonaute.Nature communications · 2024Article
- Predicted metabolic roles and stress responses provide insights into candidate phyla Hydrogenedentota and Sumerlaeota as members of the rare biosphere in biofilms from various environments.Environmental microbiology reports · 2024Article
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Authors and funding
8 authors at 4 institutions in 4 countries.
Funding
Abstract
backgroundThe planetary sulfur cycle is a complex web of chemical reactions that can be microbial-mediated or can occur spontaneously in the environment, depending on the temperature and pH. Inorganic sulfur compounds can serve as energy sources for specialized prokaryotes and are important substrates for microbial growth in general. Here, we investigate dissimilatory sulfur cycling in the brine and sediments of a southwestern Siberian soda lake characterized by an extremely high pH and salinity, combining meta-omics analyses of its uniquely adapted highly diverse prokaryote communities with biogeochemical profiling to identify key microbial players and expand our understanding of sulfur cycling under haloalkaline conditions.
resultsPeak microbial activity was found in the top 4 cm of the sediments, a layer with a steep drop in oxygen concentration and redox potential. The majority of sulfur was present as sulfate or iron sulfide. Thiosulfate was readily oxidized by microbes in the presence of oxygen, but oxidation was partially inhibited by light. We obtained 1032 metagenome-assembled genomes, including novel population genomes of characterized colorless sulfur-oxidizing bacteria (SOB), anoxygenic purple sulfur bacteria, heterotrophic SOB, and highly active lithoautotrophic sulfate reducers. Surprisingly, we discovered the potential for nitrogen fixation in a new genus of colorless SOB, carbon fixation in a new species of phototrophic Gemmatimonadetes, and elemental sulfur/sulfite reduction in the "Candidatus Woesearchaeota." Polysulfide/thiosulfate and tetrathionate reductases were actively transcribed by various (facultative) anaerobes.
conclusionsThe recovery of over 200 genomes that encoded enzymes capable of catalyzing key reactions in the inorganic sulfur cycle indicates complete cycling between sulfate and sulfide at moderately hypersaline and extreme alkaline conditions. Our results suggest that more taxonomic groups are involved in sulfur dissimilation than previously assumed.
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