Bacterial Diversity Along the Geothermal Gradients: Insights from the High-altitude Himalayan Hot Spring Habitats of Sikkim DOI Creative Commons
Santosh Kumar, Sayak Das, Namrata Jiya

et al.

Current Research in Microbial Sciences, Journal Year: 2024, Volume and Issue: 7, P. 100310 - 100310

Published: Jan. 1, 2024

Geothermal habitats present a unique opportunity to study microbial adaptation varying temperature conditions. In such environments, distinct gradients foster diverse communities, each adapted its optimal niche. However, the complex dynamics of bacterial populations in across these high-altitude hot springs remain largely unexplored. We hypothesize that is primary driver diversity, and richness peaks at intermediate temperatures. To investigate this, we analysed diversity using 16S rRNA amplicon sequencing three regions: region 56-65 °C (hot spring), warm 35-37 (path carrying spring water river), cold 4-7 (river basin). Our findings showed Bacillota was most abundant phylum (45.51 %), followed by Pseudomonadota (32.81 %) Actinomycetota (7.2 %). Chloroflexota flourished regions, while thrived cooler areas. Core microbiome analysis indicated species highest region, declining both regions. Interestingly, an anomaly observed with

Language: Английский

Simultaneous aerobic and anaerobic respiration in hot spring chemolithotrophic bacteria DOI Creative Commons
Lisa M. Keller, Daniel R. Colman, Eric S. Boyd

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 27, 2025

Aerobic and anaerobic organisms their functions are spatially or temporally decoupled at scales ranging from individual cells to ecosystems minutes hours. This is due competition for energy substrates and/or biochemical incompatibility with oxygen (O2). Here we report a chemolithotrophic Aquificales bacterium, Hydrogenobacter, isolated circumneutral hot spring in Yellowstone National Park (YNP) capable of simultaneous aerobic respiration when provided hydrogen (H2), elemental sulfur (S0), O2. Cultivation experiments demonstrated that enhanced growth rates final cell concentrations compared those grown aerobically anaerobically. Consumption O2 measured via gas chromatography detection transcripts proteins involved S0 reduction H2/S0/O2-grown cultures confirmed co-occurring metabolism. aerobic, S0-reducing metabolism suggested provide competitive advantage environments where availability low variable. Genomic data indicating the prevalence allowing this hybrid form among bacteria archaea suggest it be widespread but previously overlooked rapid, O2-dependent abiotic oxidation produced sulfide. These observations challenge existing paradigms strict delineations between Anaerobic metabolisms considered segregated. Here, authors evidence bacterium Yellowstone, challenging paradigm.

Language: Английский

Citations

0
Environmental controls on crenarchaeol distributions in hydrothermal springs DOI Creative Commons
Amanda Calhoun, Jerome Blewett, Daniel R. Colman

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 9, 2024

A bstract Thermophilic archaea synthesize cellular membranes composed primarily of isoprenoid glycerol dibiphytanyl tetraethers (iGDGTs). Cells can adjust the structure iGDGTs by increasing number cyclopentyl rings to enhance lipid packing, thereby decreasing membrane permeability and fluidity maintain function at high temperature and/or acidic pH. Certain an iGDGT, crenarchaeol, with four a unique cyclohexyl ring, which is unknown. Structural modeling suggests ring may increase fluidity, potentially representing adaptation that allowed thermophiles radiate into cooler environments. To begin investigate this hypothesis, iGDGT abundance was quantified in forty-one hydrothermal springs Yellowstone National Park (YNP), USA, contextualized within compilation global spring pH values 1.1 10.1 temperatures 16.3 95 °C. most strongly correlated both crenarchaeol per iGDGT. Crenarchaeol exhibited nonlinear relationship temperature, highest abundances 7.4 46 °C, then above below these values. These observations support hypothesis crenarchaeol’s facilitated thermophilic acidophilic lower higher niches, enabling their radiation marine realm. I mportance Archaea change composition lipids alter protect functions from environmental stressors. Some produce lipid, six-membered effect on archaeal dynamics remains In study, we identify as important geochemical variable for response hot springs. addition, distributions find evolutionary transition cool neutral waters. We contextualize findings literature spans globe.

Language: Английский

Citations

1
Efficient Hydrogen Production by In Situ Growth of sp‐C–P‐Cu Heterointerface DOI
Jinze Li,

Siao Chen,

Han Wu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Herein, the construction of sp‐C–P‐Cu bridged graphdiyne (GDY)‐copper phosphides (Cu x P) heterointerface structure is described by controlled growth GDY on surface Cu P for efficient hydrogen evolution reaction (HER). The experimental results demonstrate that newly formed sp‐C─P bonds at interfaces between and have dual roles promoting faster charge transfer producing large numbers new intrinsic active sites, which facilitates activation dissociation H 2 O to produce greatly enhanced electrocatalytic activity. As expected, as‐synthesized electrocatalyst exhibits excellent activity (HER) with overpotentials 44 mV 10 mA cm −2 , smaller than pure foam electrocatalysts. These correlate interface HER provide insights into design synthesis high‐performance

Language: Английский

Citations

1
Phylogeny and evolution of dissimilatory sulfite reduction in prokaryotes DOI

Yuxin Tao,

Zichao Zeng,

Yuhui Deng

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2024, Volume and Issue: 201, P. 108208 - 108208

Published: Sept. 28, 2024

Language: Английский

Citations

1
Microbial and mineralogical characterization of the alkaline Chae Son hot spring, Northern Thailand DOI
Chanenath Sriaporn,

S. Komonjinda,

N. Klayposri

et al.

Extremophiles, Journal Year: 2024, Volume and Issue: 29(1)

Published: Nov. 21, 2024

Language: Английский

Citations

1
Bacterial Diversity Along the Geothermal Gradients: Insights from the High-altitude Himalayan Hot Spring Habitats of Sikkim DOI Creative Commons
Santosh Kumar, Sayak Das, Namrata Jiya

et al.

Current Research in Microbial Sciences, Journal Year: 2024, Volume and Issue: 7, P. 100310 - 100310

Published: Jan. 1, 2024

Geothermal habitats present a unique opportunity to study microbial adaptation varying temperature conditions. In such environments, distinct gradients foster diverse communities, each adapted its optimal niche. However, the complex dynamics of bacterial populations in across these high-altitude hot springs remain largely unexplored. We hypothesize that is primary driver diversity, and richness peaks at intermediate temperatures. To investigate this, we analysed diversity using 16S rRNA amplicon sequencing three regions: region 56-65 °C (hot spring), warm 35-37 (path carrying spring water river), cold 4-7 (river basin). Our findings showed Bacillota was most abundant phylum (45.51 %), followed by Pseudomonadota (32.81 %) Actinomycetota (7.2 %). Chloroflexota flourished regions, while thrived cooler areas. Core microbiome analysis indicated species highest region, declining both regions. Interestingly, an anomaly observed with

Language: Английский

Citations

0