Sphagnum capillifolium holobiont from a subarctic palsa bog aggravates the potential of nitrous oxide emissions.

ABSTRACT: Melting permafrost mounds in subarctic palsa mires are thawing under climate warming and have become a substantial source of N₂O emissions. However, mechanistic insights into the permafrost thaw-induced N₂O emissions in these unique habitats remain elusive. We demonstrated that N₂O emission potential in palsa bogs was driven by the bacterial residents of two dominant Sphagnum mosses especially of Sphagnum capillifolium (SC) in the subarctic palsa bog, which responded to endogenous and exogenous Sphagnum factors such as secondary metabolites, nitrogen and carbon sources, temperature, and pH. SC's high N₂O emission activity was linked with two classes of distinctive hyperactive N₂O emitters, including Pseudomonas<

SUBMITTER: Nie Y 

PROVIDER: S-EPMC9490422 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature