Phenolic acid-degrading Paraburkholderia prime decomposition in forest soil.

ABSTRACT: Plant-derived phenolic acids are catabolized by soil microorganisms whose activity may enhance the decomposition of soil organic carbon (SOC). We characterized whether phenolic acid-degrading bacteria enhance SOC mineralization in forest soils when primed with ¹³C-labeled p-hydroxybenzoic acid (pHB). We further tested whether pHB-induced priming could explain differences in SOC content among mono-specific tree plantations in a 70-year-old common garden experiment. pHB addition primed significant losses of SOC (3-13 µmols C g^-1 dry wt soil over 7 days) compared to glucose, which reduced mineralization (-3 to -8 µmols C g^-1 dry wt soil over 7 days). The principal degraders of pHB were Paraburkholderia and Caballeronia in all plantations regardless of tree spe

SUBMITTER: Wilhelm RC 

PROVIDER: S-EPMC9723775 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature