Nitrifiers Bedford Basin
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA715654 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Guaymas Basin hydrothermal sediments Targeted loci environmental
| PRJNA1048090 | ENA
Project description:Archaeal Survey of the Guaymas Basin & Sonora Margin Shallow Subsurface Targeted loci environmental
| PRJNA553578 | ENA
Project description:Metagenomes from the Bedford Basin and the Scotian shelf Metagenome
| PRJNA725221 | ENA
Project description:The diversity of soil actinobacterial community in the Heihe river basin, China Targeted loci environmental
| PRJNA464179 | ENA
Project description:Throughout prehistory, human groups inhabited the Scheldt basin in northern Belgium, though few prehistoric human remains have been found there compared to the Meuse basin, where many caves contain human remains from various prehistoric phases. The limited preservation in the Scheldt basin is due to the region's high soil acidity, decalcification, and dryness, which degrade bones. The oldest known human bone is a clavicle dated to around 5790 years ago. Until recently, little effort had been made to identify human remains in the Scheldt basin. However, a recent survey identified four additional sites with prehistoric human remains. The paper aims to document these findings and explore their radiocarbon dates to better understand the region’s occupation history. The scarcity of remains before the Neolithic is attributed to taphonomic factors, and the lack of Late Neolithic remains might indicate a population decline, though flint mines and Meuse basin burials suggest otherwise. Another possibility is a shift in burial practices, with collective burials in megaliths or caves becoming common in western Europe during this time, unsuitable for the wet floodplains of the Scheldt basin. Most of the human bones discovered in the Scheldt basin were found in secondary contexts, likely displaced by fluvial activity. The bones were retrieved from former river channels and gullies, complicating interpretations of whether they originated from primary graves or were part of secondary burial practices. The absence of defleshing marks suggests the bones were not part of secondary burial rites, pointing instead to the erosion of primary graves from earlier settlements. The presence of settlement debris, including pottery and stone tools, supports this theory
2026-04-07 | PXD056419 | Pride
Project description:Microbial chemoautotroph-heterotroph interactions may play a pivotal role in the cycling of carbon in the deep ocean, reminiscent of phytoplankton-heterotroph associations in surface waters. Nitrifiers are the most abundant chemoautotrophs in the global ocean, yet very little is known about nitrifier metabolite production, release, and transfer to heterotrophic microbial communities. To elucidate which organic compounds are released by nitrifiers and potentially available to heterotrophs, we characterized the endo- and exometabolomes of the ammonia-oxidizing archaeon Nitrosopumilus adriaticus CCS1 and the nitrite-oxidizing bacterium Nitrospina gracilis Nb-211. Nitrifier endometabolome composition was not a good predictor of exometabolite availability, indicating that metabolites were predominately released by mechanisms other than cell death/lysis. While both nitrifiers released labile organic compounds, N. adriaticus preferentially released amino acids, in particular glycine, suggesting that its cell membranes might be more permeable to small, hydrophobic amino acids. We further initiated co-culture systems between each nitrifier and a heterotrophic alphaproteobacterium, and compared exometabolite and transcription patterns of nitrifiers grown axenically to those in co-culture. Particularly, B vitamins exhibited dynamic production and consumption patterns in co-cultures, including a higher release of pantothenic acid (vitamin B5) in both co-culture systems, and increased amounts of riboflavin (vitamin B2) and the vitamin B12 ligand dimethylbenzimidazole in co-cultures with N. adriaticus and N. gracilis, respectively. In contrast, the heterotroph likely consumed the vitamin B7 precursor dethiobiotin in co-culture with N. gracilis. Our results indicate that B vitamins and their precursors could play a particularly important role in governing specific metabolic interactions between nitrifiers and heterotrophic microbes in the ocean.
The work (proposal:https://doi.org/10.46936/10.25585/60001318) conducted by the U.S. Department of Energy Joint Genome Institute (https://ror.org/04xm1d337), a DOE Office of Science User Facility, is supported by the Office of Science of the U.S. Department of Energy operated under Contract No. DE-AC02-05CH11231.
2024-05-14 | MSV000094763 | MassIVE
Project description:environmental Targeted loci environmental
| PRJNA362987 | ENA