We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Nutrients cause consolidation of soil carbon flux to small proportion of bacterial community.
- Authors
Stone, Bram W.; Li, Junhui; Koch, Benjamin J.; Blazewicz, Steven J.; Dijkstra, Paul; Hayer, Michaela; Hofmockel, Kirsten S.; Liu, Xiao-Jun Allen; Mau, Rebecca L.; Morrissey, Ember M.; Pett-Ridge, Jennifer; Schwartz, Egbert; Hungate, Bruce A.
- Abstract
Nutrient amendment diminished bacterial functional diversity, consolidating carbon flow through fewer bacterial taxa. Here, we show strong differences in the bacterial taxa responsible for respiration from four ecosystems, indicating the potential for taxon-specific control over soil carbon cycling. Trends in functional diversity, defined as the richness of bacteria contributing to carbon flux and their equitability of carbon use, paralleled trends in taxonomic diversity although functional diversity was lower overall. Among genera common to all ecosystems, Bradyrhizobium, the Acidobacteria genus RB41, and Streptomyces together composed 45–57% of carbon flow through bacterial productivity and respiration. Bacteria that utilized the most carbon amendment (glucose) were also those that utilized the most native soil carbon, suggesting that the behavior of key soil taxa may influence carbon balance. Mapping carbon flow through different microbial taxa as demonstrated here is crucial in developing taxon-sensitive soil carbon models that may reduce the uncertainty in climate change projections. The fate of soil carbon depends on microbial processes, but whether different microbial taxa have individualistic effects on carbon fluxes is unknown. Here the authors use 16 S amplicon sequencing and stable isotopes to show how taxonomic differences influence bacterial respiration and carbon cycling across four ecosystems.
- Subjects
SOIL consolidation; CARBON in soils; BACTERIAL communities; MICROBIAL respiration; BACTERIAL diversity; TUNDRAS
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-021-23676-x