A5020092067- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Atmospheric and Environmental Gas Dynamics
- Plant-Microbe Interactions and Immunity
- Gut microbiota and health
- Hydrocarbon exploration and reservoir analysis
- Isotope Analysis in Ecology
- Potato Plant Research
- Geology and Paleoclimatology Research
- Plant Pathogens and Resistance
- Fish Ecology and Management Studies
- Neonatal Health and Biochemistry
- Adenosine and Purinergic Signaling
- Legume Nitrogen Fixing Symbiosis
- Plant Disease Resistance and Genetics
- Scientific Computing and Data Management
- Gastroesophageal reflux and treatments
- Soil and Water Nutrient Dynamics
- Geological Studies and Exploration
University of Minnesota
2023
Marine Biological Laboratory
2021-2022
University of Wyoming
2020-2022
Oregon State University
2015-2021
Wyoming Department of Education
2020
Sedimentary biofilms comprising microbial communities mediating the anaerobic oxidation of methane are rare. Here, we describe two biofilm discovered in sediment cores recovered from Arctic cold seep sites (gas hydrate pingos) north-western Barents Sea, characterized by steady fluxes. We found macroscopically visible pockets matrix at depth sulphate-methane-transition zone. 16S rRNA gene surveys revealed that community one comprised exclusively putative methanotrophic archaea which ANME-1...
Plant health is regulated by complex consortia of soil microbes with growth-promoting and pathogenic functions. In potato production, various management practices are undertaken to boost yields suppress diseases, but connections between these practices, microbiomes, tuber have not been characterized across diverse growing regions. To identify associated increased yields, we established four-year field trials eight US sites from Oregon Maine that consisted controls, fumigations, organic...
Abstract Archaea mediating anaerobic methane oxidation are key in preventing produced marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities natural settings respond to changes flux remains largely uncharacterized. We investigate gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard high Arctic, where we identify distinct concentration profiles that include steady-state, recently-increasing subsurface diffusive flux,...
Soil microbiomes play crucial roles in pathogen suppression, nutrient mobilization, and maintenance of plant health. Their complexity variability across spatial temporal scales provide challenges for identifying common targets—microbial taxa or assemblages—for management agricultural systems. To understand how potato production soils vary growing regions identify commonly distributed among them, we compiled a continental-scale bacterial eukaryotic amplicon dataset over 1,300 communities with...
Submarine mud volcanoes (MVs) along continental margins emit breccia and globally significant amounts of hydrocarbon-rich fluids from the subsurface, host distinct chemosynthetic communities microbes macrofauna. Venere MV lies at 1,600 m water depth in Ionian Sea offshore Italy is located a forearc basin Calabrian accretionary prism. Porewaters recently extruded flowing its west summit are considerably fresher than seawater (10 PSU), high Li+ B (up to 300 8,000 μM, respectively), strongly...
Microbial communities in the rhizosphere are distinct from those soils and influenced by stochastic deterministic processes during plant development. These contain bacteria capable of promoting growth host plants through various strategies. While some interactions characterized mechanistic detail using model systems, others can be inferred culture-independent methods, such as 16S amplicon sequencing, machine learning methods that account for this compositional data type. To characterize...
Anaerobic methanotrophic archaea (ANME) consume methane in marine sediments, limiting its release to the water column, but their responses changes and sulfate supplies remain poorly constrained. To address how exposure may affect microbial communities methane- sulfur-cycling gene abundances Arctic we collected sediments from offshore Svalbard that represent geochemical horizons where anaerobic methanotrophy is expected be active, previously long-inactive based on reaction-transport...
Microorganisms residing on root surfaces play a central role in plant development and performance may promote growth agricultural settings. Studies have started to uncover the environmental parameters host interactions governing their assembly. However, soil microbial communities are extremely diverse heterogeneous, showing strong variations over short spatial scales. Here, we quantify relative effect of meter-scale variation bacterial community composition among adjacent field microsites,...
X-ray computed tomography (CT) scanning is used to study the physical characteristics of soil and sediment cores, allowing scientists analyze stratigraphy without destroying core integrity. Microbiologists often work with geologists understand microbial properties in such cores; however, we do not know whether CT alters DNA that sequencing, a common method community characterization, changes as result exposure. Our objective was determine affects estimates composition communities exist...
Abstract Archaea mediating anaerobic methane oxidation are key in preventing produced marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities natural settings respond to changes flux remains largely uncharacterized. We investigate gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard high Arctic, where distinct regimes ranging steady-state dynamics, recent increase subsurface diffusive flux, and seepage were...