ArticleApplied and environmental microbiology2012
Influence of light on carbon utilization in aerobic anoxygenic phototrophs.
Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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Who cites it
37 citing papers in PubMed, 87 citations in OpenAlex.
- Survival of cyanobacteria and mitigation of Fe(II) toxicity effects in a silica-rich Archean ocean.Nature communications · 2026Article
- Phenomenal Diversity of the Photosynthetic Apparatus Evolved in Aerobic Anoxygenic Phototrophs.Microorganisms · 2025Review
- Niche formation and metabolic interactions contribute to stable diversity in a spatially structured cyanobacterial community.The ISME journal · 2025Article
- Response of aerobic anoxygenic phototrophic bacteria to limitation and availability of organic carbon.FEMS microbiology ecology · 2024Article
- Growth and mortality of aerobic anoxygenic phototrophs in the North Pacific Subtropical Gyre.Applied and environmental microbiology · 2024Article
- Phototrophic Fe(II) oxidation benefits from light/dark cycles.Environmental microbiology reports · 2024Article
- Machine learning and metagenomics identifies uncharacterized taxa inferred to drive biogeochemical cycles in a subtropical hypereutrophic estuary.ISME communications · 2024Article
- Diurnal cycles drive rhythmic physiology and promote survival in facultative phototrophic bacteria.ISME communications · 2023Article
- Characterization of a bloom-associated alphaproteobacterial lineage, 'Candidatus Phycosocius': insights into freshwater algal-bacterial interactions.ISME communications · 2023Article
- Diversity dynamics of aerobic anoxygenic phototrophic bacteria in a freshwater lake.Environmental microbiology reports · 2023Article
- A bacterium from a mountain lake harvests light using both proton-pumping xanthorhodopsins and bacteriochlorophyll-based photosystems.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Multiple sources of aerobic methane production in aquatic ecosystems include bacterial photosynthesis.Nature communications · 2022Article
- Photoheterotrophy by aerobic anoxygenic bacteria modulates carbon fluxes in a freshwater lake.The ISME journal · 2022Article
- Common Presence of PhototrophicmSystems · 2021Article
- Simultaneous Presence of Bacteriochlorophyll and Xanthorhodopsin Genes in a Freshwater Bacterium.mSystems · 2020Article
- Article
- Genomics of Aerobic Photoheterotrophs in Wheat Phyllosphere Reveals Divergent Evolutionary Patterns of Photosynthetic Genes in Methylobacterium spp.Genome biology and evolution · 2019Article
- Seasonal dynamics of aerobic anoxygenic phototrophs in freshwater lake Vlkov.Folia microbiologica · 2019Article
- Light enhances the growth rates of natural populations of aerobic anoxygenic phototrophic bacteria.The ISME journal · 2017Article
- Single-cell activity of freshwater aerobic anoxygenic phototrophic bacteria and their contribution to biomass production.The ISME journal · 2016Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aerobic anoxygenic phototrophs contain photosynthetic reaction centers composed of bacteriochlorophyll. These organisms are photoheterotrophs, as they require organic carbon substrates for their growth whereas light-derived energy has only an auxiliary function. To establish the contribution of light energy to their metabolism, we grew the phototrophic strain Erythrobacter sp. NAP1 in a carbon-limited chemostat regimen on defined carbon sources (glutamate, pyruvate, acetate, and glucose) under conditions of different light intensities. When grown in a light-dark cycle, these bacteria accumulated 25% to 110% more biomass in terms of carbon than cultures grown in the dark. Cultures grown on glutamate accumulated the most biomass at moderate light intensities of 50 to 150 μmol m(-2) s(-1) but were inhibited at higher light intensities. In the case of pyruvate, we did not find any inhibition of growth by high irradiance. The extent of anaplerotic carbon fixation was detemined by radioactive bicarbonate incorporation assays. While the carboxylation activity provided 4% to 11% of the cellular carbon in the pyruvate-grown culture, in the glutamate-grown cells it provided only approximately 1% of the carbon. Additionally, we tested the effect of light on respiration and photosynthetic electron flow. With increasing light intensity, respiration decreased to approximately 25% of its dark value and was replaced by photophosphorylation. The additional energy from light allows the aerobic anoxygenic phototrophs to accumulate the supplied organic carbon which would otherwise be respired. The higher efficiency of organic carbon utilization may provide an important competitive advantage during growth under carbon-limited conditions.
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