Diversity of Sulfur-Disproportionating Microorganisms

Slobodkin, A. I.; Slobodkina, G. B.

doi:10.1134/s0026261719050138

Cited by 70 publications

(92 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Few species have also been reported to disproportionate sulfur compounds solely for energy production and not for growth [11], as a kind of maintenance process, which could increase survival under limiting conditions. Most of the disproportionating microorganisms are known to use alternative energetically more favorable processes, such as sulfate-reduction or dissimilatory nitrate reduction to ammonium [12]. Interestingly, the disproportionation of elemental sulfur could date back up to 3.5 Ga and could be one of the earliest modes of microbial metabolism [13,14], but this hypothesis still remains highly controversial [15].…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, the disproportionation of elemental sulfur could date back up to 3.5 Ga and could be one of the earliest modes of microbial metabolism [13,14], but this hypothesis still remains highly controversial [15]. Sulfur compounds disproportionators originate from a large panel of environments such as marine sediments, freshwater sediments, anaerobic digestors, terrestrial, shallow and deep-sea hydrothermal vents, and acidic and alkaline lakes [12]. This process has been extensively studied in marine sediments but not in other environments [12,16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Sulfur compounds disproportionators originate from a large panel of environments such as marine sediments, freshwater sediments, anaerobic digestors, terrestrial, shallow and deep-sea hydrothermal vents, and acidic and alkaline lakes [12]. This process has been extensively studied in marine sediments but not in other environments [12,16,17]. In the current state of knowledge, and with recent discoveries, sulfur compounds disproportionating microorganisms appear to be phylogenetically diverse, particularly in the bacterial domain.…”

Section: Introductionmentioning

confidence: 99%

“…In the current state of knowledge, and with recent discoveries, sulfur compounds disproportionating microorganisms appear to be phylogenetically diverse, particularly in the bacterial domain. From the literature, we could elaborate a list of 42 bacterial species in total, known to be able to disproportionate inorganic sulfur compounds, and being independent of the sulfur oxygenase reductase (SOR) enzyme [11,12]. The microorganisms known so far to be capable of disproportionating sulfur compounds under anaerobic conditions belong to Thermodesulfobacteria, Firmicutes, Deltaproteobacteria and Gammaproteobacteria [12].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Genomic Characterization and Environmental Distribution of a Thermophilic Anaerobe Dissulfurirhabdus thermomarina SH388T Involved in Disproportionation of Sulfur Compounds in Shallow Sea Hydrothermal Vents

et al. 2020

View full text Add to dashboard Cite

Marine hydrothermal systems are characterized by a pronounced biogeochemical sulfur cycle with the participation of sulfur-oxidizing, sulfate-reducing and sulfur-disproportionating microorganisms. The diversity and metabolism of sulfur disproportionators are studied to a much lesser extent compared with other microbial groups. Dissulfurirhabdus thermomarina SH388T is an anaerobic thermophilic bacterium isolated from a shallow sea hydrothermal vent. D. thermomarina is an obligate chemolithoautotroph able to grow by the disproportionation of sulfite and elemental sulfur. Here, we present the results of the sequencing and analysis of the high-quality draft genome of strain SH388T. The genome consists of a one circular chromosome of 2,461,642 base pairs, has a G + C content of 71.1 mol% and 2267 protein-coding sequences. The genome analysis revealed a complete set of genes essential to CO2 fixation via the reductive acetyl-CoA (Wood-Ljungdahl) pathway and gluconeogenesis. The genome of D. thermomarina encodes a complete set of genes necessary for the dissimilatory reduction of sulfates, which are probably involved in the disproportionation of sulfur. Data on the occurrences of Dissulfurirhabdus 16S rRNA gene sequences in gene libraries and metagenome datasets showed the worldwide distribution of the members of this genus. This study expands our knowledge of the microbial contribution into carbon and sulfur cycles in the marine hydrothermal environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Genomic Characterization and Environmental Distribution of a Thermophilic Anaerobe Dissulfurirhabdus thermomarina SH388T Involved in Disproportionation of Sulfur Compounds in Shallow Sea Hydrothermal Vents

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Note that the reverse of Reactions (1), (2), and (3) describes sulfur disproportionation, a confirmed metabolism carried out by, among others, members of the Deltaproteobacteria and Thermodesulfobacteria in several natural environments, including marine sediments, shallow-and deep-sea hydrothermal systems, and alkaline hot springs (16)(17)(18)(19)(20)(21). Whether the forward (comproportionation) or reverse (disproportionation) reaction is thermodynamically favorable depends predominantly on the chemical composition of the environment under consideration; temperature and pressure play a far more limited role.…”

Section: Resultsmentioning

confidence: 67%

Another chemolithotrophic metabolism missing in nature—sulfur comproportionation

Amend

Aronson

Macalady

et al. 2019

Preprint

View full text Add to dashboard Cite

Chemotrophic microorganisms gain energy for cellular functions by catalyzing oxidation-reduction (redox) reactions that are out of equilibrium. Calculations of the Gibbs energy (∆ ! ) can identify whether a reaction is thermodynamically favorable, and the accompanying energy yield at the temperature, pressure, and chemical composition in the system of interest. Based on carefully calculated values of ∆ ! , we predict a novel microbial metabolism-sulfur comproportionation (3H 2 S + SO 4 2-+ 2H + = 4S 0 + 4H 2 O).We show that at elevated concentrations of sulfide and sulfate in acidic environments over a broad temperature range, this putative metabolism can be exergonic (∆ ! <0), yielding ~30-50 kJ/mol. We suggest that this may be sufficient energy to support a chemolithotrophic metabolism currently missing in nature. Other versions of this metabolism, to thiosulfate (H 2 S + SO 4 2-= S 2 O 3 2-+ H 2 O) and to sulfite (H 2 S + 3SO 4 2-= 4SO 3 2-+ 2H + ), are only moderately exergonic or endergonic even at ideal geochemical conditions. Natural and impacted environments, including sulfidic karst systems, shallow-sea hydrothermal vents, sites of acid mine drainage, and acid-sulfate crater lakes, may be ideal hunting grounds for finding microbial sulfur comproportionators.

show abstract

The Complex Interplay of Sulfur and Arsenic Bioenergetic Metabolisms in the Arsenic Geochemical Cycle

D’Ermo,

Guiral,

Schoepp-Cothenet

2024

Geomicrobiology: Natural and Anthropogenic Settings

View full text Add to dashboard Cite

Geochemical cycles of arsenic and sulfur are largely impacted by the activity of prokaryotes as microorganisms use these two elements for assimilatory and dissimilatory purposes.Knowledge of the enzymatic systems responsible for these processes is thus essential for understanding the geochemical cycles of both elements. But arsenic and sulfur commonly coexist in the environment, leading to the formation of thiolated arsenic species with one to four arsenic-bonded oxygen atoms substituted by sulfur. Considering these chemical species and the biological processes at the heart of their formation and transformations is therefore crucial for comprehending the complexity of the global geochemical cycles of arsenic and sulfur. This chapter offers a comprehensive overview of the well-known prokaryotic arsenic and sulfur enzyme systems responsible for use of these two elements in bioenergetics, as well as the ever growing-group of prokaryotic enzymes revealed to be able to convert thioarsenic species or to convert both arsenic and sulfur.

show abstract

Diversity of Sulfur-Disproportionating Microorganisms

Cited by 70 publications

References 74 publications

Genomic Characterization and Environmental Distribution of a Thermophilic Anaerobe Dissulfurirhabdus thermomarina SH388T Involved in Disproportionation of Sulfur Compounds in Shallow Sea Hydrothermal Vents

Genomic Characterization and Environmental Distribution of a Thermophilic Anaerobe Dissulfurirhabdus thermomarina SH388T Involved in Disproportionation of Sulfur Compounds in Shallow Sea Hydrothermal Vents

Another chemolithotrophic metabolism missing in nature—sulfur comproportionation

The Complex Interplay of Sulfur and Arsenic Bioenergetic Metabolisms in the Arsenic Geochemical Cycle

Contact Info

Product

Resources

About