Response of archaeal communities in the rhizosphere of maize and soybean to elevated atmospheric CO2 concentrations.

ABSTRACT:

Background

Archaea are important to the carbon and nitrogen cycles, but it remains uncertain how rising atmospheric carbon dioxide concentrations ([CO(2)]) will influence the structure and function of soil archaeal communities.

Methodology/principal findings

We measured abundances of archaeal and bacterial 16S rRNA and amoA genes, phylogenies of archaeal 16S rRNA and amoA genes, concentrations of KCl-extractable soil ammonium and nitrite, and potential ammonia oxidation rates in rhizosphere soil samples from maize and soybean exposed to ambient (∼385 ppm) and elevated (550 ppm) [CO(2)] in a replicated and field-based study. There was no influence of elevated [CO(2)] on copy numbers of archaeal or bacterial 16S rRNA or amoA genes, archaeal community composition, KCl-extractab

SUBMITTER: Nelson DM 

PROVIDER: S-EPMC3012111 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature