Interactions among plants, bacteria, and fungi reduce extracellular enzyme activities under long-term N fertilization.

ABSTRACT: Atmospheric nitrogen (N) deposition has enhanced soil carbon (C) stocks in temperate forests. Most research has posited that these soil C gains are driven primarily by shifts in fungal community composition with elevated N leading to declines in lignin degrading Basidiomycetes. Recent research, however, suggests that plants and soil microbes are dynamically intertwined, whereby plants send C subsidies to rhizosphere microbes to enhance enzyme production and the mobilization of N. Thus, under elevated N, trees may reduce belowground C allocation leading to cascading impacts on the ability of microbes to degrade soil organic matter through a shift in microbial species and/or a change in plant-microbe interactions. The objective of this study was to determine the extent to which couplings amo

SUBMITTER: Carrara JE 

PROVIDER: S-EPMC5980773 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature