CB003
Electro Microbial Ecology. Processes, Players, and Impacts in Aquatic Systems
Session ID#: 253601
Session Description:
The rapidly expanding field of electro-microbiology is revealing a wide range of electro-active microorganisms. The interactions between these microbes and their physical/chemical environment shape element cycling in aquatic sediments in new and poorly understood ways.
Geobacter and
Shewanella exchange electrons with iron and manganese minerals, influencing their dissolution and making macro nutrients and trace metals available to other organisms. Cable bacteria transport electrons over centimeter distances, linking oxygen or nitrate reduction at the sediment surface to sulfide oxidation in deeper anoxic layers. Tantalizing clues also suggest that sheath-associated microbes may facilitate electron transfer along cable bacteria filaments that span across sedimentary redox gradients.
Advanced tools, including electrochemical systems, microsensors, and omics techniques, allow real-time monitoring and deeper insight into the functional diversity of these electroactive organisms. However, most evidence in this field comes from engineered systems and laboratory studies employing a reductionist approach, leaving the occurrence, complex interactions, and environmental relevance of these processes largely unexplored.
This session invites research from electro-microbiology, geophysics, geomicrobiology, and biogeochemistry to advance our understanding of bioelectric processes in aquatic element cycling and ecosystem function, from freshwater to marine settings. Studies that connect basic science with practical applications, supporting sustainable environmental management are also welcomed.
Co-Sponsor(s):
Index Terms:
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0463 Microbe/mineral interactions [BIOGEOSCIENCES]
0465 Microbiology: ecology, physiology and genomics [BIOGEOSCIENCES]
0470 Nutrients and nutrient cycling [BIOGEOSCIENCES]
Primary Chair: Ugo Marzocchi, Aarhus University, Department of Biology - Center for Electromicrobiology, Aarhus C, Denmark
Co-chairs: Annette Rowe, Michigan State University, Department of Microbiology, Genetics, & Immunology, East Lansing, United States, Diana Vasquez Cardenas, University of Antwerp, Antwerp, Belgium and Muammar Mansor, University of Tübingen, Geomicrobiology, Tübingen, Germany
Electrochemical Characterization and Microbial Fuel Cell Construction Using Fermentation-Based Indigo Dye Vat (2007597)
Kasumi Nakagawa1, Michiki Takeuchi2, Mayu Kikuchi3, Takaiku Sakamoto4, Jun Ogawa3, Keisei Sowa3, Kenji Kano3 and Eiji Sakuradani4, (1)Gifu University, Fac. Appl. Biol. Sci., Gifu, Japan, (2)Kyoto Institute of Technology, Fac. Mol. Chem. Eng., Kyoto, Japan, (3)Kyoto University, Div. Appl. Life Sci., Grad. Sch. Agric., Kyoto, Japan, (4)Tokushima University, Fac. Biosci. Bioind., Tokushima, Japan
The sediments of a meromictic lake provide diverse niches to electroactive microbes linking iron, manganese and sulphur cycling (2018770)
Marta Sudo1, Leonardo Morini2, Sara Benelli3, Monia Magri3, Andreas Schramm4, Ian P G Marshall5, Marco Bartoli3 and Ugo Marzocchi4, (1)Department of Biology - Center for Electromicrobiology, Department of Biology, Aarhus C, Denmark, (2)University of Ferrara, Department of Environmental and Prevention Sciences, Ferrara, Italy, (3)University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parma, Italy, (4)Aarhus University, Department of Biology - Center for Electromicrobiology, Aarhus C, Denmark, (5)Aarhus University, Department of Biology - Center for Electromicrobiology, Aarhus, Denmark
Cable Bacteria Promote N2O Production via (Chemo)denitrification in Aquatic Sediments (2028172)
Mie Mai Corneliussen1, Mathias Hvolby Pedersen2, Youda Huang3, Meijun Dong3, Julia Otte1, Lars Riis Damgaard4, Lars Peter Nielsen5, Meiying Xu3, Andreas Schramm6 and Ugo Marzocchi6, (1)Aarhus University, Department of Biology, Center for Electromicrobiology, Aarhus C, Denmark, (2)Aarhus University, Aarhus C, Denmark, (3)Guangdong Academy of Sciences, Guangzhou, China, (4)Aarhus University, Biology - Center for Electromicrobiology, Aarhus C, Denmark, (5)Aarhus University, Department of Biology, Section for Microbiology, Center for Electromicrobiology, Aarhus C, Denmark, (6)Aarhus University, Department of Biology - Center for Electromicrobiology, Aarhus C, Denmark
Synergistic Extracellular Extracellular Electron Transfer in a Cathode-Oxidizing Marine Sediment Bacterial Co-culture (2038201)
Annette Rowe, Michigan State University, Microbiology, Immunology, and Genetics & Earth and Environmental Science, East Lansing, United States and Joshua Sackett, Michigan State University, Microbiology, Genetics and Immunology, East Lansing, United States
Genetic Determinants of Inward Extracellular Electron Transfer in the Sulfur-Oxidizing Marine Sediment Bacterium, Thioclava electrotropha (2042709)
Joshua Sackett, Michigan State University, Microbiology, Genetics and Immunology, East Lansing, United States and Annette Rowe, Michigan State University, Department of Microbiology, Genetics, & Immunology, East Lansing, United States
A Comparison of Bioelectrochemical Tools for Sulfide Bioremediation in Oyster Aquaculture Sediments (2043539)
Michael Kalinowski, University of Maryland Center for Environmental Science, Cambridge, United States, Andrew David Thaler, Blackbeard Biologic: Science and Environmental Advisors, Saint Michaels, United States, Martin Rabenhorst, University of Maryland, Department of Environmental Science & Technology, College Park, United States, Clara A Fuchsman, University of Maryland Center for Environmental Science Horn Point Laboratory, Cambridge, United States and Sairah Malkin, University of Maryland Center for Environmental Science, Cambridge, MD, UNITED STATES
