Microbial ecology of the deep terrestrial subsurface

RC Beaver, JD Neufeld - The ISME Journal, 2024 - academic.oup.com
The terrestrial subsurface hosts microbial communities that, collectively, are predicted to
comprise as many microbial cells as global surface soils. Although initially thought to be …

Unearthing terrestrial extreme microbiomes for searching terrestrial-like life in the Solar System

C Coleine, M Delgado-Baquerizo - Trends in Microbiology, 2022 - cell.com
The possibility of life elsewhere in the universe has fascinated humankind for ages. To the
best of our knowledge, life, as we know it, is limited to planet Earth; yet current investigation …

Microbial population dynamics and evolutionary outcomes under extreme energy limitation

WR Shoemaker, SE Jones… - Proceedings of the …, 2021 - National Acad Sciences
Microorganisms commonly inhabit energy-limited ecosystems where cellular maintenance
and reproduction is highly constrained. To gain insight into how individuals persist under …

86Kr excess and other noble gases identify a billion-year-old radiogenically-enriched groundwater system

O Warr, CJ Ballentine, TC Onstott, DM Nisson… - Nature …, 2022 - nature.com
Deep within the Precambrian basement rocks of the Earth, groundwaters can sustain
subsurface microbial communities, and are targets of investigation both for geologic storage …

Thermochronologic perspectives on the deep-time evolution of the deep biosphere

H Drake, PW Reiners - … of the National Academy of Sciences, 2021 - National Acad Sciences
The Earth's deep biosphere hosts some of its most ancient chemolithotrophic lineages. The
history of habitation in this environment is thus of interest for understanding the origin and …

Candidatus Desulforudis audaxviator dominates a 975 m deep groundwater community in central Sweden

G Westmeijer, F van Dam, R Kietäväinen… - Communications …, 2024 - nature.com
The continental bedrock contains groundwater-bearing fractures that are home to microbial
populations that are vital in mediating the Earth's biogeochemical cycles. However, their …

Beyond basic diversity estimates—analytical tools for mechanistic interpretations of amplicon sequencing data

A Trego, C Keating, C Nzeteu, A Graham, V O'Flaherty… - Microorganisms, 2022 - mdpi.com
Understanding microbial ecology through amplifying short read regions, typically 16S rRNA
for prokaryotic species or 18S rRNA for eukaryotic species, remains a popular, economical …

Genetic diversity in terrestrial subsurface ecosystems impacted by geological degassing

TLV Bornemann, PS Adam, V Turzynski… - Nature …, 2022 - nature.com
Abstract Earth's mantle releases 38.7±2.9 Tg/yr CO2 along with other reduced and oxidized
gases to the atmosphere sha** microbial metabolism at volcanic sites across the globe …

Species-resolved, single-cell respiration rates reveal dominance of sulfate reduction in a deep continental subsurface ecosystem

MR Lindsay, T D'Angelo… - Proceedings of the …, 2024 - National Acad Sciences
Rates of microbial processes are fundamental to understanding the significance of microbial
impacts on environmental chemical cycling. However, it is often difficult to quantify rates or to …

The Hidden Hydrogeosphere: The Contribution of Deep Groundwater to the Planetary Water Cycle

B Sherwood Lollar, O Warr… - Annual Review of Earth …, 2024 - annualreviews.org
The canonical water cycle assumes that all water entering the subsurface to form
groundwater eventually reenters the surface water cycle by discharge to lakes, streams, and …