A deep-sea sulfate reducing bacterium directs the formation of zero-valent sulfur via sulfide oxidation
Liu, R.; Shan, Y.; Xi, S.; Zhang, X.; Sun, C.
Show abstract
Zero-valent sulfur (ZVS) is a critical intermediate in the biogeochemical sulfur cycle. Up to date, sulfur oxidizing bacteria have been demonstrated to dominate the formation of ZVS. In contrast, formation of ZVS mediated by sulfate reducing bacteria (SRB) has been rarely reported. Here, we report for the first time that a typical sulfate reducing bacterium Desulfovibrio marinus CS1 directs the formation of ZVS via sulfide oxidation. In combination with proteomic analysis and protein activity assays, thiosulfate reductase (PhsA) and sulfide: quinone oxidoreductase (SQR) were demonstrated to play key roles in driving ZVS formation. In this process, PhsA catalyzed thiosulfate to form sulfide, which was then oxidized by SQR to form ZVS. Consistently, the expressions of PhsA and SQR were significantly up-regulated in strain CS1 when cultured in the deep-sea cold seep, strongly indicating strain CS1 might form ZVS in its real inhabiting niches. Notably, homologs of phsA and sqr widely distributed in the metagenomes of deep-sea SRB. Given the high abundance of SRB in cold seeps, it is reasonable to propose that SRB might greatly contribute to the formation of ZVS in the deep-sea environments. Our findings add a new aspect to the current understanding of the source of ZVS.
Matching journals
The top 6 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Characterization of the first cultured free-living representative of Candidatus Izimaplasma uncovers its unique biology 98%
- Genetic and phylogenetic analysis of dissimilatory iodate-reducing bacteria identifies potential niches across the world's oceans 95%
- Genome diversification in globally distributed novel marine Proteobacteria is linked to environmental adaptation 95%
Similar papers in this journal
Similar papers in this journal
- Exploring Taxonomic and Functional Microbiome of Hawaiian Stream and Spring Irrigation Water Systems Using Illumina and Oxford Nanopore Sequencing Platforms 94%
- Assessing biosynthetic gene cluster diversity in a multipartite nutritional symbiosis between herbivorous turtle ants and conserved gut symbionts 94%
- The isolate Caproiciproducens sp. 7D4C2 produces n-caproate at mildly acidic conditions from hexoses: genome and rBOX comparison with related strains and chain-elongating bacteria 94%
Similar papers in this journal
- Clarifying Microbial Nitrous Oxide Reduction Under Aerobic Conditions: Tolerant, Intolerant, and Sensitive 94%
- Thermal endurance by a hot-spring-dwelling phylogenetic relative of the mesophilic Paracoccus 94%
- Living to the high extreme: unraveling the composition, structure, and functional insights of bacterial communities thriving in the arsenic-rich Salar de Huasco - Altiplanic ecosystem. 93%
Similar papers in this journal
- The assembly of microbial communities on red sandstone surfaces was shaped by dispersal limitation and heterogeneous selection 95%
- Microbial consortiums of putative degraders of low-density polyethylene-associated compounds in the ocean 95%
- Genome and community-level interaction insights on wide carbon utilizing and element cycling function of Hydrothermarchaeota from hydrothermal sediment 94%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.