Results 111 to 120 of about 9,287 (195)

Tripled plant productivity and soil microbiome restructuring in a greenhouse volcanic ash fertilization experiment

open access: yesEcosphere, Volume 16, Issue 9, September 2025.
Abstract Volcanic ash is widely held responsible for fertilizing soils, but the processes and conditions leading to volcanic soil fertility remain poorly understood. We report here the results of a greenhouse volcanic ash fertilization (VAF) experiment aimed to explore the impact of basaltic ash addition (0–10 wt%) to soil on plant growth, nutrient ...
Hubert Staudigel   +5 more
wiley   +1 more source

Characterizing Chemoautotrophy and Heterotrophy in Marine Archaea and Bacteria With Single-Cell Multi-isotope NanoSIP

open access: yesFrontiers in Microbiology, 2019
Characterizing and quantifying in situ metabolisms remains both a central goal and challenge for environmental microbiology. Here, we used a single-cell, multi-isotope approach to investigate the anabolic activity of marine microorganisms, with an ...
Anne E. Dekas   +8 more
doaj   +1 more source

A congruent phylogenomic signal places eukaryotes within the Archaea [PDF]

open access: yes, 2012
Determining the relationships among the major groups of cellular life is important for understanding the evolution of biological diversity, but is difficult given the enormous time spans involved.
Cox, C. J.   +4 more
core   +2 more sources

Interactions and Community Structure of Fungi and Prokaryotes in Salt and Brackish Marsh Ecosystems

open access: yesEnvironmental DNA, Volume 7, Issue 5, September–October 2025.
Microbial communities drive biogeochemical cycling in salt and brackish marshes, yet fungal‐prokaryotic interactions remain understudied. This study used 16S and 28S rRNA metabarcoding and network analyses to examine microbial communities in North Inlet salt marsh and Winyah Bay brackish marsh.
Madeleine A. Thompson, Xuefeng Peng
wiley   +1 more source

Microbial diversity in the thermal springs within Hot Springs National Park [PDF]

open access: yes, 2018
The thermal water systems of Hot Springs National Park (HSNP) in Hot Springs, Arkansas exist in relative isolation from other North American thermal systems. The HSNP waters could therefore serve as a unique center of thermophilic microbial biodiversity.
Moran, Matthew D   +2 more
core   +3 more sources

Structural conservation of chemotaxis machinery across Archaea and Bacteria [PDF]

open access: yes, 2015
Chemotaxis allows cells to sense and respond to their environment. In Bacteria, stimuli are detected by arrays of chemoreceptors that relay the signal to a two-component regulatory system.
Briegel, Ariane   +5 more
core   +3 more sources

Metagenomic insights into effects of thiamine supplementation on ruminal non-methanogen archaea in high-concentrate diets feeding dairy cows

open access: yesBMC Veterinary Research, 2019
Background Overfeeding of high-concentrate diet (HC) frequently leads to subacute ruminal acidosis (SARA) in modern dairy cows’ production. Thiamine supplementation has been confirmed to attenuate HC induced SARA by increasing ruminal pH and ratio of ...
Fuguang Xue   +6 more
doaj   +1 more source

Constraints in the application of the Branched and Isoprenoid Tetraether index as a terrestrial input proxy [PDF]

open access: yes, 2011
Determination of the relative inputs of aquatic autochthonous and terrestrial allochthonous organic matter into marine and lacustrine environments is essential to understanding the global carbon budget.
Fietz, Susanne   +4 more
core   +2 more sources

The contribution of ammonia-oxidizing archaea to primary production in the South China Sea [PDF]

open access: yes, 2016
海洋初级生产力是供养和维持海洋巨大生物资源的物质基础,同时能够通过驱使大气CO2向海洋转移,来实现对全球气候变化的调节作用,因此加深对海洋初级生产力的认识将有助于我们对海洋生态系统、海洋生物地球化学循环及全球变化等问题的认识。然而目前关于初级生产力的研究主要集中在真光层,而对于占海洋水体近75%的真光层以下水体的研究则严重落后。另一方面,奇古菌作为古菌的突出代表,既具有海洋中分布的广泛性与高丰度的特点,同时还具有自养碳固定和氨氧化的功能,使得它在海洋碳、氮生物地球化学循环中扮演着重要的角色。因此 ...
李皓
core  

Hydrocarbon-related microbial processes in the deep sediments of the Eastern Mediterranean Levantine Basin [PDF]

open access: yes
During the 2011 exploration season of the EV Nautilus in the Mediterranean Sea, we conducted a multidisciplinary study, aimed at exploring the microbial populations below the sediment–water interface (SWI) in the hydrocarbon-rich environments of the ...
Antler, Gilad   +10 more
core   +1 more source

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