A5067494350- Microbial Fuel Cells and Bioremediation
- Microbial Community Ecology and Physiology
- Radioactive element chemistry and processing
- Geochemistry and Elemental Analysis
- Metal Extraction and Bioleaching
- Enzyme-mediated dye degradation
- Methane Hydrates and Related Phenomena
- Microbial bioremediation and biosurfactants
- Chromium effects and bioremediation
- Geological Studies and Exploration
- Arsenic contamination and mitigation
- Biochemical and biochemical processes
- Mine drainage and remediation techniques
- Geochemistry and Geologic Mapping
- CO2 Sequestration and Geologic Interactions
- Peatlands and Wetlands Ecology
- Bacteriophages and microbial interactions
- Algal biology and biofuel production
- Biofuel production and bioconversion
- Wastewater Treatment and Nitrogen Removal
- Coastal wetland ecosystem dynamics
- Advanced oxidation water treatment
- Invertebrate Taxonomy and Ecology
- Soil Carbon and Nitrogen Dynamics
- Mining and Gasification Technologies
Universidad de Playa Ancha de Ciencias de la Educación
2018-2024
Millenium Nucleus for Planet Formation
2024
Federico Santa María Technical University
2017-2022
University of Massachusetts Amherst
2011-2014
ABSTRACT Early studies with Geobacter sulfurreducens suggested that outer-surface c -type cytochromes might play a role in U(VI) reduction, but it has recently been there is substantial reduction at the surface of electrically conductive pili known as microbial nanowires. This phenomenon was further investigated. A strain G. , Aro-5, which produces substantially reduced conductivity nearly well wild type, did gene for PilA, structural pilin protein, deleted. In order to reduce rates levels...
Previous studies have suggested that protozoa prey on Fe(III)- and sulfate-reducing bacteria are enriched when acetate is added to uranium contaminated subsurface sediments stimulate U(VI) reduction. In order determine whether continue impact biogeochemistry after these amendments stopped, 18S rRNA ß-tubulin sequences from this phase of an in situ bioremediation field experiment were analyzed. Sequences most similar Metopus species predominated, with the majority closely related M....
Geobacter species often play an important role in the situ bioremediation of uranium-contaminated groundwater, but little is known about how these microbes avoid uranium toxicity. To evaluate this further, proteome sulfurreducens exposed to 100 µM U(VI) acetate was compared control cells not U(VI). Of 1363 proteins detected from cultures, 203 had higher abundance during exposure with and 148 lower abundance. U(VI)-exposed cultures expressed levels involved growth, protein amino acid...
Technical advances have converted bioremediation into a large-scale ecosystem service suitable for the treatment of polluted soils worldwide; however, its application in Chile is scarce. The main hurdles that must be addressed include capacities such approaches soils, lack knowledge about key factors affecting costs and legal framework to regulate this activity. In study, economic performance chronically hydrocarbon-polluted urban based on bioaugmentation, biostimulation or combination both...
Some sulfate-reducing bacteria (SRB), mainly belonging to the Desulfovibrionaceae family, have evolved capability conserve energy through microbial extracellular electron transfer (EET), suggesting that this process may be more widespread than previously believed. While previous evidence has shown mobile genetic elements drive plasticity and evolution of SRB iron-reducing (FeRB), few investigated shared molecular mechanisms related EET. To address this, we analyzed prevalence abundance EET...
The production of lignocellulosic-derived biofuels is a highly promising source alternative energy, but it has been constrained by the lack microbial platform capable to efficiently degrade this recalcitrant material and cope with by-products that can be toxic cells. Species naturally grow in environments where carbon mainly available as lignin are for finding new ways removing protects cellulose improved conversion fuel precursors. Enterobacter lignolyticus SCF1 facultative anaerobic...
Parque Nacional La Campana (PNLC) is recognized worldwide for its flora and fauna, rather than microbial richness. Our goal was to characterize the structure composition of communities (bacteria, archaea fungi) their relationship with plant typical PNLC, such as sclerophyllous forest, xerophytic shrubland, hygrophilous forest dry distributed along topoclimatic variables, namely, exposure, elevation slope. The ecosystems, physical chemical properties organic matter soil were characterized by...
Petroleum hydrocarbons are highly persistent in the environment and represent a significant risk for humans, biodiversity, ecosystems. Frequently, hydrocarbon-contaminated sites remain polluted decades due to lack of proper decontamination treatments. Although bioremediation techniques have gained attention being environmentally friendly, cost-effective applicable situ, their application is still limited. Each soil has particularities, therefore, approach contaminated site unique....
Some hyperthermophilic heterotrophs in the genus Thermococcus produce H2 absence of S° and have up to seven hydrogenases, but their combined physiological roles are unclear. Here, we show which hydrogenases paralvinellae affected by added during growth without S°. Growth rates steady-state cell concentrations decreased while formate production increased when T. paralvinallae was grown a chemostat with 65 µM H2(aq) . Differential gene expression analysis using RNA-Seq showed consistent six...
Lignin is the second most abundant carbon polymer on earth and despite having more fuel value than cellulose, it currently considered a waste byproduct in many industrial lignocellulose applications. Valorization of lignin relies effective green methods de-lignification, with growing interest use microbes. Here we investigate physiology molecular response novel facultative anaerobic bacterium, Tolumonas lignolytica BRL6-1, to under anoxic conditions. Physiological biochemical changes were...
Sulfate reducing prokaryotes (SRP) are a phylogenetically and physiologically diverse group of microorganisms that use sulfate as an electron acceptor. SRP have long been recognized key players the carbon sulfur cycles, more recently, they identified to play relevant role part syntrophic symbiotic relations human microbiome. Despite their environmental relevance, there is poor understanding about prevalence prophages CRISPR arrays how distribution dynamic affect ecological SRP. We addressed...
Coastal zones are ecosystems that sensitive to climate change and anthropogenic pollution, resulting in a potential loss of biodiversity ecosystem services through eutrophication nutrient imbalances, among others. The coastal El Sauce catchment area, Central Chile, is under multiple pressures including wastewater treatment plant (WWTP) discharge, which its broad effect remains underexplored. In order assess the impact WWTP on stream, benthic microbial communities key functional groups...
Coastal wetlands are ecosystems associated with intense carbon dioxide (CO 2 ), methane (CH 4 ) and nitrous oxide (N O) recycling, modulated by salinity other environmental factors that influence the microbial community involved in greenhouse gases production consumption. In this study, we evaluated of on GHG concentration benthic composition coastal along coast semiarid region. Wetlands were situated landscapes a south-north gradient higher aridity lower anthropogenic impact. Our results...
Abstract Lignin is the second most abundant carbon polymer on earth and despite having more fuel value than cellulose, it currently considered a waste byproduct in many industrial lignocellulose applications. Valorization of lignin relies effective green methods delignification, with growing interest use microbes. Here we investigate physiology biotransformation mechanisms novel facultative anaerobic bacterium, Tolumonas lignolytica BRL6-1, under anoxic conditions. Physiological biochemical...