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Quorum sensing control of phosphorus acquisition in Trichodesmium consortia
Evidence is presented that epibiotic bacteria in Trichodesmium consortia use quorum sensing (QS) to regulate the activity of alkaline phosphatases (APases), enzymes used by epibionts in the acquisition of phosphate from dissolved-organic phosphorus molecules.
Energy and carbon metabolisms in a deep terrestrial subsurface fluid microbial community
The terrestrial deep subsurface is a huge repository of microbial biomass, but in relation to its size and physical heterogeneity, few sites have been investigated in detail. Here, we applied a…
Chemolithotrophy in the continental deep subsurface: Sanford Underground Research Facility (SURF), USA
Evaluating the energetic yield of chemolithotrophic metabolisms and microbial diversity in the Sanford Underground Research Facility (SURF) in the former Homestake Gold Mine, SD, USA suggests a complex spatial mosaic of subsurface primary productivity that is in good agreement with predicted energy yields.
Isolation and Characterization of Electrochemically Active Subsurface Delftia and Azonexus Species
- Yamini Jangir, Sarah K. French, L. Momper, D. Moser, J. Amend, M. El-Naggar
- 21 May 2016
Electrochemical enrichment of microorganisms from a deep fractured-rock aquifer in Death Valley, California, USA is reported, suggesting that additional ‘hidden’ interactions with external electron acceptors are also possible.
An Expanded Ribosomal Phylogeny of Cyanobacteria Supports a Deep Placement of Plastids
- K. Moore, C. Magnabosco, L. Momper, D. Gold, T. Bosak, G. Fournier
- BiologyFront. Microbiol.
- 1 July 2019
Plastids are recovered as sister to Gloeomargarita and it is shown that the group diverges from other cyanobacterial groups before Pseudanabaena, a previously unreported placement.
Major phylum‐level differences between porefluid and host rock bacterial communities in the terrestrial deep subsurface
A unique analysis showing differences in terrestrial subsurface microbial communities between fracture fluids and host rock through which those fluids permeate is presented.
A novel cohabitation between two diazotrophic cyanobacteria in the oligotrophic ocean
- L. Momper, B. Reese, G. Carvalho, Patrick K. H. Lee, E. Webb
- Environmental ScienceThe ISME Journal
- 17 March 2015
Using unialgal enrichments obtained from this cruise, it is shown that these Calothrix-like heterocystous cyanobionts (hetDA for ‘Trichodesmium-associated heterocyStous diazotroph’) fix nitrogen on a diurnal cycle (maximally in the middle of the light cycle with a detectable minimum in the dark) and could potentially influence TrichodesMium-derived nitrogen fixation budgets in the world ocean.
Bacillus rigiliprofundi sp. nov., an endospore-forming, Mn-oxidizing, moderately halophilic bacterium isolated from deep subseafloor basaltic crust.
- J. Sylvan, C. Hoffman, L. Momper, B. Toner, J. Amend, K. Edwards
- BiologyInternational journal of systematic and…
- 1 June 2015
It is concluded that strain 1MBB1T represents a novel species of the genus Bacillus, for which the name Bacillus rigiliprofundi sp.
Iron-Fueled Life in the Continental Subsurface: Deep Mine Microbial Observatory, South Dakota, USA
- C. Casar, L. Momper, B. Kruger, M. Osburn
- BiologyApplied and environmental microbiology
- 11 August 2021
The potential for iron cycling at DeMMO is revisited using a new metagenomic dataset including all DeM MO sites and FeGenie, a new annotation pipeline that is optimized for the detection of iron cycling genes, and a holistic view of metabolic strategies across the communities.
Mineral‐hosted biofilm communities in the continental deep subsurface, Deep Mine Microbial Observatory, SD, USA
It is suggested that host rock mineralogy is an important ecological driver in deep continental biospheres because it can significantly enhance biofilm cell densities and promote selective colonization by taxa putatively capable of extracellular electron transfer.