Iron (Fe) and copper (Cu) are essential cofactors for microbial metalloenzymes, but little is known about the metalloenyzme inventory of anaerobic marine microbial communities despite their importance to the nitrogen cycle. We compared dissolved O₂ , NO₃⁻, NO₂⁻, Fe and Cu concentrations with nucleic acid sequences encoding Fe and Cu-binding...
Complex symbioses between animal or plant hosts and their associated microbiotas can involve thousands of species and millions of genes. Because of the number of interacting partners, it is often impractical to study all organisms or genes in these host-microbe symbioses individually. Yet new phylogenetic predictive methods can use the...
While there has been growing interest in the gut microbiome in recent years, it remains unclear whether closely related species and strains have similar or distinct functional roles and if organisms capable of both aerobic and anaerobic growth do so simultaneously. To investigate these questions, we implemented a high-throughput mass...
The vast marine deep biosphere consists of microbial habitats within sediment, pore waters, upper basaltic crust and the fluids that circulate throughout it. A wide range of temperature, pressure, pH, and electron donor and acceptor conditions exists—all of which can combine to affect carbon and nutrient cycling and result in...
To understand mechanisms linking ecosystem processes and microbial diversity in freshwater ecosystems, bacterial productivity and the metacommunity dynamics of species sorting and mass effects were investigated in an 18 ha headwater lake in northern Alaska. On most sampling dates, the phylogenetic composition of bacterial communities in inflowing streams (inlets) was...
Full Text:
biogeography. Frontiers in Microbiology, 5:82.
doi:10.3389/fmicb.2014.00082
10.3389/fmicb.2014.00082
Previous studies of coral viruses have employed either microscopy or metagenomics, but few have attempted to comprehensively link the presence of a virus-like particle (VLP) to a genomic sequence. We conducted transmission electron microscopy imaging and virome analysis in tandem to characterize the most conspicuous viral types found within the...
Microbial communities are responsible for the bulk of biogeochemical processing in temporary headwater streams, yet there is still relatively little known about how community structure and function respond to periodic drying. Moreover, the ability to sample temporary habitats can be a logistical challenge due to the limited capability to measure...
Full Text:
headwater streams: a
cross-system comparison. Frontiers in Microbiology, 6, 522.
doi:10.3389/fmicb
Stony corals are the ecosystem engineers of the vital, dynamic, and complex marine ecosystem known as coral reefs. Globally, coral reefs are undergoing degradation from multiple anthropogenic stressors. Coral reef organism holobionts, or the host along with its microbial components, are key to reef ecosystem success and functioning. Marine microbes...
To determine if a storm event (i.e., high winds, large volumes of precipitation) could
alter concentrations of Vibrio vulnificus and V. parahaemolyticus in aquacultured oysters
(Crassostrea virginica) and associated surface water and sediment, this study followed a
sampling timeline before and after Hurricane Irene impacted the Chesapeake Bay estuary in...
Kombucha is a fermented sweet tea beverage of Asian origin which has become popular in the West due to its distinct flavor and possible health benefits. Kombucha is fermented by inoculating sweet tea with yeast and bacteria until a pellicle, referred to as a SCOBY (symbiotic culture of bacteria and...