Distinct responses of soil microbial communities to elevated CO2 and O3 in a soybean agro-ecosystem.

ABSTRACT: The concentrations of atmospheric carbon dioxide (CO2) and tropospheric ozone (O3) have been rising due to human activities. However, little is known about how such increases influence soil microbial communities. We hypothesized that elevated CO2 (eCO2) and elevated O3 (eO3) would significantly affect the functional composition, structure and metabolic potential of soil microbial communities, and that various functional groups would respond to such atmospheric changes differentially. To test these hypotheses, we analyzed 96 soil samples from a soybean free-air CO2 enrichment (SoyFACE) experimental site using a comprehensive functional gene microarray (GeoChip 3.0). The results showed the overall functional composition and structure of soil microbial communities shifted under eCO2, eO3 or e

SUBMITTER: He Z 

PROVIDER: S-EPMC3930317 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature