A global comparison of surface and subsurface microbiomes reveals large-scale biodiversity gradients, and a marine-terrestrial divide DOI Creative Commons
S. Emil Ruff, Isabella Hrabě de Angelis, Megan M. Mullis

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(51)

Published: Dec. 18, 2024

Subsurface environments are among Earth’s largest habitats for microbial life. Yet, until recently, we lacked adequate data to accurately differentiate between globally distributed marine and terrestrial surface subsurface microbiomes. Here, analyzed 478 archaeal 964 bacterial metabarcoding datasets 147 metagenomes from diverse widely environments. Microbial diversity is similar in microbiomes at local global scales. However, community composition greatly differs sea land, corroborating a phylogenetic divide that mirrors patterns plant animal diversity. In contrast, overlaps supporting continuum rather than discrete biosphere. Differences life thus seem greater land subsurface. Diversity of decreases with depth, while distance cultured isolates rivals or exceeds We identify distinct compositions but

Language: Английский

Biodiversity restated: > 99.9% of global species in Soil Biota DOI Creative Commons
Robert J. Blakemore

ZooKeys, Journal Year: 2025, Volume and Issue: 1224, P. 283 - 316

Published: Feb. 3, 2025

More than a decade of research led to the conclusion in 2022 that Soil Biome is home ~ 2.1 × 10 24 taxa and thus supports > 99.9% global species biodiversity, mostly Bacteria or other microbes, based upon topographic field data. A subsequent 2023 report tabulated central value just 1.04 claiming soils had 59 ± 15%, i.e., 44–74% (or truly 10–50%?) total, while incidentally confirming upper values 90% for soil Bacteria. Incompatibility these two studies reviewed, supporting prior biodiversity data with vast majority inhabiting soils, despite excluding viruses (now 5 31 virions 26 most, 80%, soils). The status Oligochaeta (earthworms) marked “?” paper are clarified. Although biota totals increased considerably, inordinate threats topsoil erosion poisoning yet pertain finality extinction. Species affected include Keystone taxa, especially earthworms essential healthy foundation sustain Tree-of-Life Earth.

Language: Английский

Citations

0
Metagenome-assembled genomes of acetogenic enrichment obtained from deep subsurface archean granitoids of Koyna Seismogenic Zone, Koyna, India DOI Open Access
Rajendra Prasad Sahu, Pinaki Sar

Microbiology Resource Announcements, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

ABSTRACT We report 14 metagenome-assembled genomes (MAGs) of acetogenic bacteria (acetogens) enriched from deep (1,679–2,912 m below surface), hot (55°C–74 °C) granitoids the Koyna Seismogenic Zone, India. These MAGs include Thermoanaerobacter pseudethanolicus, Exiguobacterium alkaliphilum, Moorella humiferrea, Caldanaerobacter subterraneus , etc. The study allowed access to biosphere acetogens.

Language: Английский

Citations

0
Metagenomic insights into taxonomic and functional patterns in shallow coastal and deep subseafloor sediments in the Western Pacific DOI Creative Commons
Jiarui Sun, Miho Hirai, Yoshihiro Takaki

et al.

Microbial Genomics, Journal Year: 2025, Volume and Issue: 11(3)

Published: March 18, 2025

Marine sediments are vast, underexplored habitats and represent one of the largest carbon deposits on our planet. Microbial communities drive nutrient cycling in these sediments, but full extent their taxonomic metabolic diversity remains to be explored. Here, we analysed shallow coastal deep subseafloor sediment cores from 0.01 nearly 600 metres below seafloor, Western Pacific Region. Applying metagenomics, identified several clusters across all samples, which mainly aligned with depth type. Inferring functional patterns provided insights into possible ecological roles main microbial taxa. These included Chloroflexota , most abundant phylum whereby classes Dehalococcoida Anaerolineae dominated deep-subsurface respectively. Thermoproteota Asgardarchaeota were phyla among Archaea, contributing high relative abundances Archaea reaching over 50% some samples. We recovered high-quality metagenome-assembled genomes for prokaryotic lineages proposed names three phyla, i.e. Tangaroaeota phyl. nov. (former RBG-13-66-14), Ryujiniota UBA6262) Spongiamicota UBA8248). Metabolic capabilities samples ranged aerobic respiration photosynthesis shallowest layers heterotrophic utilization, sulphate reduction methanogenesis deeper anoxic sediments. also taxa potential involved nitrogen sulphur utilization. In summary, this study contributes understanding benthic marine

Language: Английский

Citations

0
Microbial Life Within the Deep, Hot Subsurface Biosphere and Its Implications in Astrobiology DOI
Sourav Mukhopadhyay,

Swatilekha Sarkar,

Pinaki Sar

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Hydrochemistry, microbial ecology and physiological-biochemical properties of isolated bacteria of Tyrma hot spring (Far East of Russia) DOI
Elena Lebedeva, I.V. Bragin, Andrey N. Pavlov

et al.

Limnologica, Journal Year: 2025, Volume and Issue: unknown, P. 126255 - 126255

Published: April 1, 2025

Language: Английский

Citations

0
Progressively greater temperature sensitivity of organic carbon decomposition in subsoil relative to topsoil along a millennial chronosequence of paddy soils DOI
Xiangxiang Wang,

Yi Miao,

Jun Cui

et al.

CATENA, Journal Year: 2025, Volume and Issue: 256, P. 109083 - 109083

Published: April 26, 2025

Language: Английский

Citations

0
Sunlight-Driven Direct/Mediated Electron Transfer for Cr(VI) Reductive Sequestration on Dissolved Black Carbon–Ferrihydrite Coprecipitates DOI

Leiye Sun,

Tianming Wang, Bo Li

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Surface runoff horizontally distributed chromium (Cr) pollution into various surface environments. Sunlight is a vital factor for the Cr cycle in environment, which may be affected by photoactive substances such as ferrihydrite (Fh) and dissolved black carbon (DBC). Herein, sunlight-driven transformation dynamics of species on DBC-Fh coprecipitates were studied. Under sunlight, removal aqueous Cr(VI) occurred through reductive sequestration including adsorption, followed reduction (pathway 1) reduction, precipitation 2). Additionally, with higher DBC content exhibited more effective both adsorbed (

Language: Английский

Citations

2
Novel candidate taxa contribute to key metabolic processes in Fennoscandian shield deep groundwaters DOI Creative Commons
Mark Dopson,

Maryam Rezaei Somee,

Carolina González

et al.

ISME Communications, Journal Year: 2024, Volume and Issue: 4(1)

Published: Jan. 1, 2024

Language: Английский

Citations

1
Interactions between deep microbial biosphere and geo-sequestrated CO2: A review DOI
X. D. Zhu, Bo Wang, Yuan Yuan

et al.

International Biodeterioration & Biodegradation, Journal Year: 2024, Volume and Issue: 197, P. 105958 - 105958

Published: Nov. 26, 2024

Language: Английский

Citations

1
Depth-dependent Effects of Leguminous Crops on Soil Nitrogen-Fixing Microbial Communities Correlated with Carbon Degradation DOI Creative Commons

Yi-Heng Tao,

Yi Fan, Shuang Pang

et al.

Journal of Plant Ecology, Journal Year: 2024, Volume and Issue: 17(6)

Published: Oct. 9, 2024

Abstract Legumes play critical roles in agroecosystems by modulating nitrogen-fixing microorganisms to enhance soil fertility and promote crop productivity. Current research on the effects of legumes predominantly focuses surface soil, lacking a comprehensive analysis their overall impact across multiple layers an in-depth understanding associated microbial mechanisms. Here, community structure three (0–20 cm, 20–50 cm 50–100 cm) under legume non-legume cultivation was investigated through metagenomic sequencing. We found that only topsoil treatment exhibited significantly higher relative abundance genes than treatment. Under cultivation, layer deeper layers, whereas displayed inverse depth-dependent pattern. Combining physicochemical properties, correlated with moisture, total carbon (TC), dissolved organic (DOC) content. Both TC DOC were identified as key drivers these genes. Subsequently, similar pattern within degradation response both crops. The abundances negatively individually, distinct from Our findings highlight nitrogen fixation interaction between fixation, providing insights into management practices future agriculture.

Language: Английский

Citations

0