ArticleMicrobes and environments2012
Production and consumption of hydrogen in hot spring microbial mats dominated by a filamentous anoxygenic photosynthetic bacterium.
Article in Microbes and environments, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 58 citations in OpenAlex.
- Syntrophic Interaction between an Anoxygenic Photosynthetic Bacterium and a Tetrathionate-reducing Bacterium in Anaerobic Benzoate Degradation.Microbes and environments · 2025Article
- Insights on Microbial Communities Inhabiting Non-Volcanic Hot Springs.International journal of molecular sciences · 2022Article
- Complete genome of the thermophilic purple sulfur Bacterium Thermochromatium tepidum compared to Allochromatium vinosum and other Chromatiaceae.Photosynthesis research · 2022Article
- Bacterial community structure in geothermal springs on the northern edge of Qinghai-Tibet plateau.Frontiers in microbiology · 2022Article
- In-Situ Metatranscriptomic Analyses Reveal the Metabolic Flexibility of the Thermophilic Anoxygenic Photosynthetic BacteriumMicroorganisms · 2021Article
- Aerobic Production of Bacteriochlorophylls in the Filamentous Anoxygenic Photosynthetic Bacterium, Chloroflexus aurantiacus in the Light.Microbes and environments · 2020Article
- Vertical Distribution and Diversity of Phototrophic Bacteria within a Hot Spring Microbial Mat (Nakabusa Hot Springs, Japan).Microbes and environments · 2019Article
- Sulfide-dependent Photoautotrophy in the Filamentous Anoxygenic Phototrophic Bacterium, Chloroflexus aggregans.Microbes and environments · 2019Article
- Function of Biohydrogen Metabolism and Related Microbial Communities in Environmental Bioremediation.Frontiers in microbiology · 2019Review
- Symbiotic Growth of a Thermophilic Sulfide-Oxidizing Photoautotroph and an Elemental Sulfur-Disproportionating Chemolithoautotroph and Cooperative Dissimilatory Oxidation of Sulfide to Sulfate.Frontiers in microbiology · 2019Article
- Phylogenetic Diversity of Nitrogenase Reductase Genes and Possible Nitrogen-Fixing Bacteria in Thermophilic Chemosynthetic Microbial Communities in Nakabusa Hot Springs.Microbes and environments · 2018Article
- Nitrogen Fixation in Thermophilic Chemosynthetic Microbial Communities Depending on Hydrogen, Sulfate, and Carbon Dioxide.Microbes and environments · 2018Article
- Evolution of Phototrophy in the Chloroflexi Phylum Driven by Horizontal Gene Transfer.Frontiers in microbiology · 2018Article
- Article
- Differences in Temperature and Water Chemistry Shape Distinct Diversity Patterns in Thermophilic Microbial Communities.Applied and environmental microbiology · 2017Article
- Diversity and Distribution of Thermophilic Bacteria in Hot Springs of Pakistan.Microbial ecology · 2017Article
- In Situ Hydrogen Dynamics in a Hot Spring Microbial Mat during a Diel Cycle.Applied and environmental microbiology · 2016Article
- In Situ Gene Expression Responsible for Sulfide Oxidation and CO2 Fixation of an Uncultured Large Sausage-Shaped Aquificae Bacterium in a Sulfidic Hot Spring.Microbes and environments · 2016Article
- The cyanobacterium Mastigocladus fulfills the nitrogen demand of a terrestrial hot spring microbial mat.The ISME journal · 2015Article
- Microsensor measurements of hydrogen gas dynamics in cyanobacterial microbial mats.Frontiers in microbiology · 2015Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Microbial mats containing the filamentous anoxygenic photosynthetic bacterium Chloroflexus aggregans develop at Nakabusa hot spring in Japan. Under anaerobic conditions in these mats, interspecies interaction between sulfate-reducing bacteria as sulfide producers and C. aggregans as a sulfide consumer has been proposed to constitute a sulfur cycle; however, the electron donor utilized for microbial sulfide production at Nakabusa remains to be identified. In order to determine this electron donor and its source, ex situ experimental incubation of mats was explored. In the presence of molybdate, which inhibits biological sulfate reduction, hydrogen gas was released from mat samples, indicating that this hydrogen is normally consumed as an electron donor by sulfate-reducing bacteria. Hydrogen production decreased under illumination, indicating that C. aggregans also functions as a hydrogen consumer. Small amounts of hydrogen may have also been consumed for sulfur reduction. Clone library analysis of 16S rRNA genes amplified from the mats indicated the existence of several species of hydrogen-producing fermentative bacteria. Among them, the most dominant fermenter, Fervidobacterium sp., was successfully isolated. This isolate produced hydrogen through the fermentation of organic carbon. Dispersion of microbial cells in the mats resulted in hydrogen production without the addition of molybdate, suggesting that simultaneous production and consumption of hydrogen in the mats requires dense packing of cells. We propose a cyclic electron flow within the microbial mats, i.e., electron flow occurs through three elements: S (elemental sulfur, sulfide, sulfate), C (carbon dioxide, organic carbon) and H (di-hydrogen, protons).
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