arsenic-cycling
Arsenic-cycling refers to the biogeochemical processes by which arsenic moves and transforms through soil-plant systems. This is critical for plant science because plants readily accumulate arsenic from contaminated soils, affecting food safety and crop productivity, and understanding these cycling mechanisms enables the development of remediation strategies and insights into how plants physiologically respond to arsenic stress.
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