The rhizosphere of aquatic plants is a habitat for cable bacteria.

ABSTRACT: Cable bacteria belonging to the family Desulfobulbaceae couple sulfide oxidation and oxygen reduction by long-distance electron transfer over centimeter distances in marine and freshwater sediments. In such habitats, aquatic plants can release oxygen into the rhizosphere. Hence, the rhizosphere constitutes an ideal habitat for cable bacteria, which have been reported on seagrass roots recently. Here, we employ experimental approaches to investigate activity, abundance, and spatial orientation of cable bacteria next to the roots of the freshwater plant Littorella uniflora. Fluorescence in situ hybridization (FISH), in combination with oxygen-sensitive planar optodes, demonstrated that cable bacteria densities are enriched at the oxic-anoxic transition zone next to roots compared to the bulk

SUBMITTER: Scholz VV 

PROVIDER: S-EPMC6510695 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature