Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

2
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.
2
Microbial Nutrition01:28

Microbial Nutrition

1
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
1
Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

2
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
2
Carbon-dioxide Fixation01:28

Carbon-dioxide Fixation

1
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
1
Bioremediation00:46

Bioremediation

18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

7.8K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Specific bile acids can elicit the type-I interferon response through the cGAS-STING pathway.

Cell communication and signaling : CCS·2026
Same author

[Indication and timing of biologics in the treatment of CRSwNP].

Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery·2026
Same author

Trends in Asthma-Rhinitis Allergic Multimorbidity and Polysensitization in China: The CARRAD Study.

MedComm·2026
Same author

Effects and Mechanisms of Probiotics, Prebiotics, Synbiotics, and Postbiotics for the Prevention and Management of Alzheimer's Disease: A Narrative Review.

Antioxidants (Basel, Switzerland)·2026
Same author

Chinese Position Paper on Biologic Therapy for Allergic Rhinitis.

Allergy·2026
Same author

Wet-spun Ag/PZT/TPU composite piezoelectric fibers with ultrahigh flexibility: fabrication, performance, and sensing response.

RSC advances·2026

Related Experiment Video

Updated: Jun 6, 2025

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace
09:03

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace

Published on: September 6, 2018

12.2K

Iron forms regulate methane production and oxidation potentials in paddy soils.

Jinli Hu1, Huabin Li1, Xian Wu2

  • 1College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.

The Science of the Total Environment
|December 1, 2024
PubMed
Summary

Iron in paddy soils significantly impacts methane production and oxidation. Soil weathering and iron oxide forms influence these processes, affecting greenhouse gas emissions from rice cultivation.

Keywords:
Indirect effectIron formsMethane oxidationMethane productionPaddy soils

More Related Videos

Author Spotlight: Designing Simple and Inexpensive Techniques to Grow Methane-Oxidizing Bacteria in the Laboratory
07:31

Author Spotlight: Designing Simple and Inexpensive Techniques to Grow Methane-Oxidizing Bacteria in the Laboratory

Published on: September 6, 2024

889
A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
06:29

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

3.3K

Related Experiment Videos

Last Updated: Jun 6, 2025

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace
09:03

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace

Published on: September 6, 2018

12.2K
Author Spotlight: Designing Simple and Inexpensive Techniques to Grow Methane-Oxidizing Bacteria in the Laboratory
07:31

Author Spotlight: Designing Simple and Inexpensive Techniques to Grow Methane-Oxidizing Bacteria in the Laboratory

Published on: September 6, 2024

889
A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
06:29

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

3.3K

Area of Science:

  • Agricultural Science
  • Environmental Science
  • Soil Science

Background:

  • Paddy fields are major sources of methane (CH4) emissions.
  • Redox processes in flooded soils alter iron, influencing CH4 production and oxidation.
  • Regional variations in iron oxides and their impact on CH4 cycling are poorly understood.

Purpose of the Study:

  • To investigate the relationship between iron oxide forms and CH4 production/oxidation potentials in Chinese paddy soils.
  • To determine how soil properties and iron biogeochemistry control CH4 emissions across different regions.

Main Methods:

  • Collected 26 paddy soil samples from North to South China.
  • Measured CH4 production and oxidation potentials.
  • Analyzed iron oxide concentrations and forms, soil pH, organic carbon, and microbial communities.

Main Results:

  • CH4 production potential showed a North-South gradient, higher in the South.
  • CH4 oxidation potential lacked a significant latitudinal trend.
  • Highly weathered soils with high free iron oxides had greater CH4 production due to reduced organic carbon protection.

Conclusions:

  • Iron forms play a crucial role in regulating CH4 production and oxidation in paddy soils.
  • Indirect effects of iron on soil pH, organic carbon, and microbes are more significant than direct effects.
  • Understanding iron biogeochemistry offers new strategies for mitigating agricultural greenhouse gas emissions.