Soil carbonyl sulfide exchange in relation to microbial community composition: insights from a managed grassland soil amendment experiment.

ABSTRACT: The viability of carbonyl sulfide (COS) measurements for partitioning ecosystem-scale net carbon dioxide (CO₂) fluxes into photosynthesis and respiration critically depends on our knowledge of non-leaf sinks and sources of COS in ecosystems. We combined soil gas exchange measurements of COS and CO₂ with next-generation sequencing technology (NGS) to investigate the role of soil microbiota for soil COS exchange. We applied different treatments (litter and glucose addition, enzyme inhibition and gamma sterilization) to soil samples from a temperate grassland to manipulate microbial composition and activity. While untreated soil was characterized by consistent COS uptake, other treatments reduced COS uptake and even turned the soil into a net COS source. Removing biotic

SUBMITTER: Kitz F 

PROVIDER: S-EPMC6774760 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature