Limited effect of radial oxygen loss on ammonia oxidizers in Typha angustifolia root hairs.

ABSTRACT: The benefits of plant-microbe interactions have been exploited extensively for nutrient removal. Radial oxygen loss in aquatic macrophytes potentially promotes nitrification and accelerates nitrogen removal through coupled nitrification-denitrification process. Nitrification is likely the limiting activity for an effective nitrogen removal in wetlands. In this work, we have quantified the effect of radial oxygen losses in Typha angustifolia plants in environments of contrasting salinities, including a temporary lagoon, a constructed wetland, and a river estuary. In all sites, radial oxygen diffusion occurred mainly at a narrow band, from 1 to 5 cm from the root tip, and were almost absent at the tip and basal sections of the root (> 5 cm). Root sections with active oxygen diffusion tended

SUBMITTER: Hernandez-Del Amo E 

PROVIDER: S-EPMC7518425 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature