Dynamics of Reactive Oxygen Species and Nitrogen Cycling in Soils as a Mechanism for Volatile Reactive Nitrogen Oxide Production DOI Creative Commons
Megan Purchase, Jonathan D. Raff,

Alexander G Gale

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 30, 2024

Heterotrophic bacteria and fungi are responsible for the decomposition of organic matter in soil. During this process, reactive oxygen species (ROS) can be produced directly indirectly as extracellular byproducts respiration. It is well known that nitrogen (N) cycle processes lead to formation volatile oxides (NO y ), a group climate-active gases contribute atmospheric chemistry negatively impact human health. Primary microbial sources NO include ammonia-oxidising denitrifying fungi. Despite soil being significant source global emissions, studies date have primarily focused on N emissions from agricultural soils there remains large scope investigating mechanisms production wider context order better constrain terrestrial climate process models. Here, we propose potential mechanism involving ROS could influence We utilised metagenomics metatranscriptomics alongside continuous gas flux measurements analysis properties evaluate connection between soil-sourced . Our findings suggest more , particularly nitric oxide (NO), presence increased abundance taxa. lost environment or reacts with superoxide, an via enzymatic activity (SOM) decomposers. This reaction produces peroxynitrite (ONOO - which demonstrated enhance dioxide 2 ) shown extent through pathway may dependent SOM composition, associated variability carbon content.

Language: Английский

Dynamics of Reactive Oxygen Species and Nitrogen Cycling in Soils as a Mechanism for Volatile Reactive Nitrogen Oxide Production DOI Creative Commons
Megan Purchase, Jonathan D. Raff,

Alexander G Gale

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 30, 2024

Heterotrophic bacteria and fungi are responsible for the decomposition of organic matter in soil. During this process, reactive oxygen species (ROS) can be produced directly indirectly as extracellular byproducts respiration. It is well known that nitrogen (N) cycle processes lead to formation volatile oxides (NO y ), a group climate-active gases contribute atmospheric chemistry negatively impact human health. Primary microbial sources NO include ammonia-oxidising denitrifying fungi. Despite soil being significant source global emissions, studies date have primarily focused on N emissions from agricultural soils there remains large scope investigating mechanisms production wider context order better constrain terrestrial climate process models. Here, we propose potential mechanism involving ROS could influence We utilised metagenomics metatranscriptomics alongside continuous gas flux measurements analysis properties evaluate connection between soil-sourced . Our findings suggest more , particularly nitric oxide (NO), presence increased abundance taxa. lost environment or reacts with superoxide, an via enzymatic activity (SOM) decomposers. This reaction produces peroxynitrite (ONOO - which demonstrated enhance dioxide 2 ) shown extent through pathway may dependent SOM composition, associated variability carbon content.

Language: Английский

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