methane-biogeochemistry
Methane-biogeochemistry is the study of how methane is produced, consumed, and cycled through biological and chemical processes in ecosystems. For plants, this field is particularly significant because plants actively mediate methane cycling through their root systems and interactions with soil microorganisms, especially in anaerobic environments like wetlands where they can transport, emit, or oxidize methane. Understanding these plant-methane dynamics is essential for predicting ecosystem function and addressing global climate challenges related to this potent greenhouse gas.
PubMed · 2026-02-15
Methane-cycling bacteria in contaminated groundwater dramatically accelerate arsenic release, potentially tripling toxic arsenic mobilization rates. The study reveals that microbial succession and types of organic matter directly control how arsenic transforms and spreads through groundwater systems.
Enhanced methane oxidation increased As(III) mobilization rate 3-fold from 1.04 to 3.30 μg kg⁻¹ d⁻¹
Methanotroph proliferation boosted methane oxidation rates 2-fold (94.99 to 190.76 mg kg⁻¹ d⁻¹) and methanogens produced up to 7.23 mg kg⁻¹ d⁻¹ methane
Humified dissolved organic matter decoupled iron-arsenic geochemical linkage while labile DOM promoted arsenic mobilization through microbial methyl-related metabolism