Methanogens Are Major Contributors to Nitrogen Fixation in Soils of the Florida Everglades.

ABSTRACT: The objective of this study was to investigate the interaction of the nitrogen (N) cycle with methane production in the Florida Everglades, a large freshwater wetland. This study provides an initial analysis of the distribution and expression of N-cycling genes in Water Conservation Area 2A (WCA-2A), a section of the marsh that underwent phosphorus (P) loading for many years due to runoff from upstream agricultural activities. The elevated P resulted in increased primary productivity and an N limitation in P-enriched areas. Results from quantitative real-time PCR (qPCR) analyses indicated that the N cycle in WCA-2A was dominated by nifH and nirK/S, with an increasing trend in copy numbers in P-impacted sites. Many nifH sequences (6 to 44% of the total) and ni

SUBMITTER: Bae HS 

PROVIDER: S-EPMC5861825 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature