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Related Concept Videos

Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

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Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
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The Soil Ecosystem02:23

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Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
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Updated: Dec 27, 2025

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
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Local Phenomena Shape Backyard Soil Metabolite Composition.

Tra D Nguyen1, Mahbobeh Lesani2, Ines Forrest1

  • 1Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019, USA.

Metabolites
|March 4, 2020
PubMed
Summary
This summary is machine-generated.

Soil metabolite composition is shaped by regional, state, and city factors, with unique local influences also detected. This study reveals the complex interplay of environmental and human factors on soil chemistry.

Keywords:
LC-MS/MShuman activitymetabolomicsmolecular networkingnatural productssoil

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Microbiology

Background:

  • Soil is crucial for agriculture and harbors diverse microorganisms for drug discovery.
  • Studying soil's complex small molecule profile is challenging due to its heterogeneous nature.

Purpose of the Study:

  • To analyze the influence of geographical factors (city, state, region) on backyard soil metabolite composition.
  • To understand the drivers of soil metabolite variability across different U.S. climate zones.

Main Methods:

  • Utilized high-resolution liquid chromatography-tandem mass spectrometry (LC-MS/MS).
  • Employed large-scale data analysis, including molecular networking.
  • Analyzed 188 soil samples from 14 U.S. states across five climate regions.

Main Results:

  • Geographical location (region, state, city) significantly impacts soil metabolite profiles.
  • Numerous unique metabolites were site-specific, indicating localized environmental influences.
  • Identified both human-derived and naturally produced (plant, microbial) metabolites in soil.

Conclusions:

  • Geographic and local factors collectively shape backyard soil metabolomes.
  • Soil metabolite composition is a complex interplay of macro- and micro-environmental influences.
  • Highlights the necessity for comprehensive metabolomic investigations in diverse soil environments.