Nitrogen fixation associated with two cohabiting moss species expresses different patterns under Cu and Zn contamination.

ABSTRACT: Nitrogen (N₂) fixation by moss-associated cyanobacteria is an important N source in pristine ecosystems. Previous studies have shown that moss-associated N₂ fixation is sensitive to anthropogenic N pollution. However, we still lack understanding of the effects of other factors derived from anthropogenic sources, such as heavy metal pollution on N₂ fixation. To test this, we collected two dominant mosses (Pleurozium schreberi and Spaghnum palustre) from a temperate bog in Denmark and assessed their N₂ fixation responses to simulated heavy metal pollution by adding 5 levels (plus a control) of copper (Cu, 0-0.05 mg g dw^-1) and zinc (Zn, 0-0.1 mg g dw^-1). Metal concentrations in both mosses increased linearly with Cu and Zn add

SUBMITTER: Sjogren TD 

PROVIDER: S-EPMC10404191 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature