Emergent macrophytes act selectively on ammonia-oxidizing bacteria and archaea.
Ammonia-oxidizing bacteria (AOB) and archaea (AOA) were quantified in the sediments and roots of dominant macrophytes in eight neutral to alkaline coastal wetlands. The AOA dominated in most samples, but the bacterial-to-archaeal amoA gene ratios increased with increasing ammonium levels and pH in the sediments. For all plant species, the ratios increased on the root surface relative to the adjacent bulk sediment. This suggests that root surfaces in these environments provide conditions favoring enrichment of AOB.
Molecular Microbial Ecology Group, Institute of Aquatic Ecology, University of Girona, Girona, Spain.
Rosalia
R
Trias
Olaya
O
Ruiz-Rueda
Arantzazu
A
García-Lledó
Ariadna
A
Vilar-Sanz
Rocío
R
López-Flores
Xavier D
XD
Quintana
Sara
S
Hallin
Lluís
L
Bañeras
D000641:Ammonia / Q000378:metabolism*; D001105:Archaea / Q000145:classification* / Q000235:genetics* / Q000378:metabolism; D001419:Bacteria / Q000145:classification* / Q000235:genetics* / Q000378:metabolism; D044822:Biodiversity; D006863:Hydrogen-Ion Concentration; D054892:Metagenome; D010084:Oxidation-Reduction; D018517:Plant Roots / Q000382:microbiology*; D053833:Wetlands
D000641:Ammonia