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Characterize the Growth and Metabolism of Acidithiobacillus ferrooxidans under Electroautotrophic and Chemoautotrophic Conditions [PDF]

Microorganisms
Acidophiles are capable of surviving in extreme environments with low pH. Acidithiobacillus ferrooxidans is a typical acidophilic bacterium that has been extensively studied when grown chemoautotrophically, i.e., when it derives energy from oxidation of ...
Quansheng Wang, Haijun Long, Huiqi Wang, Maggie C. Y. Lau Vetter   +3 more
doaj   +2 more sources

Main components of free organic carbon generated by obligate chemoautotrophic bacteria that inhibit their CO2 fixation [PDF]

iScience, 2022
Summary: Chemoautotrophic bacteria play an important role in combating the rise in global CO2. However, recently it was found that extracellular free organic carbon (EFOC) generated by chemoautotrophic bacteria inhibits their CO2 fixation.
Saiwei Zhang, Xiaohua Fu, Yonglei Han, Liwen Wei, Mengnan Liu, Ya-nan Wang, Lei Wang   +6 more
doaj   +2 more sources

Quantitative stable isotope probing (qSIP)-informed metagenomics identifies viruses infecting chemoautotrophs [PDF]

Nature Communications
Aquatic environments absorb ~2.5 gigatonnes of atmospheric carbon each year1, more than the carbon stored in the atmosphere, soils, and all biomass combined.
Elaine Luo, Ngoc D. Pham, Timothy J. Rogers, Md Moinuddin Sheam, Bayleigh E. Benner, Joseph J. Vallino, Gareth Trubl, Julie A. Huber   +7 more
doaj   +2 more sources

Elevated heterotrophic activity in Guaymas Basin hydrothermal plumes influences deep-sea carbon cycling [PDF]

Nature Communications
Deep-sea hydrothermal plumes are characterized by chemoautotrophic production fueled by the oxidation of reduced inorganic substrates. Recently, organic carbon cycling was proposed, but the metabolic fate of organic carbon is unconstrained.
Andrew Montgomery, Guang-Chao Zhuang, Zhichao Zhou, Marguerite V. Langwig, María del Carmen Millán-Motolinía, Hannah Y. L. Choi, Kimberley S. Hunter, Carlos A. Mortera-Gutiérrez, Christelle Hyacinthe, Zachary Marinelli, Karthik Anantharaman, Andreas Teske, Samantha B. Joye   +12 more
doaj   +2 more sources

Chemoautotrophic carbon fixation in thermokarst lakes on the Tibetan Plateau [PDF]

Nature Communications
Dissolved organic carbon (DOC) derived from thermokarst lakes is usually considered to be prone to microbial degradation and releases substantial carbon dioxide to the atmosphere, potentially enhancing the positive permafrost carbon (C)-climate feedback.
Futing Liu, Luyao Kang, Ziliang Li, Josep Peñuelas, Benjamin W. Abbott, Weijie Xu, Wei Zhou, Xuning Liu, Leiyi Chen, Shuqi Qin, Dianye Zhang, Yunfeng Peng, Yuanhe Yang   +12 more
doaj   +2 more sources

Fixation of carbon dioxide by chemoautotrophic bacteria in grassland soil under dark conditions

Acta Agriculturae Scandinavica - Section B Soil and Plant Science, 2017
Grassland is one of the most important terrestrial ecosystems for carbon (C) and nitrogen (N) cycling. However, while CO2 fixation by phototrophic bacteria is relatively well studied, little is known about microbial CO2 fixation without light by ...
Yumei Kang, Katsutoshi Sakurai, Kouhei Ohnishi   +2 more
exaly   +2 more sources

Current understanding of electroautotrophy and its relevance in astrobiology-related research. [PDF]

mLife
Abstract Electroautotrophy—the use of extracellular electrons as the primary energy source for autotrophic metabolism—remains understudied compared to photoautotrophy and chemoautotrophy. Its occurrence in deep‐earth and deep‐sea environments suggests profound implications for astrobiology, yet electroautotrophic microorganisms remain poorly explored ...
Wang Q, Lau Vetter MCY.
europepmc   +2 more sources

Deep-sea corals near cold seeps associate with sulfur-oxidizing chemoautotrophs in the family Ca. Thioglobaceae [PDF]

Microbiome
Background Corals are known for their symbiotic relationships, yet there is limited evidence of chemoautotrophic associations. This is despite some corals occurring near cold seeps where chemosymbiotic fauna abound including mussels that host sulfur ...
Samuel A. Vohsen, Harald R. Gruber-Vodicka, Eslam O. Osman, Matthew A. Saxton, Samantha B. Joye, Nicole Dubilier, Charles R. Fisher, Iliana B. Baums   +7 more
doaj   +2 more sources

Metabolic biochemical models of N2 fixation for sulfide oxidizers, methanogens, and methanotrophs [PDF]

mSystems
Dinitrogen (N2) fixation provides bioavailable nitrogen to the biosphere. However, in some habitats (e.g., sediments), the metabolic pathways of organisms carrying out N2 fixation are unclear. We present metabolic models representing various chemotrophic
Meng Gao, Megan E. Berberich, Reid Brown, David M. Costello, James B. Cotner, Julian Damashek, Leila Richards Kittu, Ada Pastor, Robinson W. Fulweiler, J. Thad Scott, Amy M. Marcarelli, Keisuke Inomura   +11 more
doaj   +2 more sources

Protocol to analyze the inhibitory effect of free organic carbon generated by chemoautotrophic bacteria on their CO2 fixation [PDF]

STAR Protocols, 2023
Summary: Here, we present a protocol to analyze the inhibition of self-generated extracellular free organic carbon (EFOC) on CO2 fixation by chemoautotrophic bacteria. We detail the construction and operation of membrane reactor, followed by a simulation
Saiwei Zhang, Xiaohua Fu, Ya-nan Wang, Lei Wang   +3 more
doaj   +2 more sources