Change search
ReferencesLink to record
Permanent link

Direct link
Composition and diversity of nifH genes of nitrogen-fixing cyanobacteria associated with boreal forest feather mosses
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
Show others and affiliations
2011 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 192, no 2, 507-517 p.Article in journal (Refereed) Published
Abstract [en]

Recent studies have revealed that nitrogen fixation by cyanobacteria living in association with feather mosses is a major input of nitrogen to boreal forests. We characterized the community composition and diversity of cyanobacterial nifH phylotypes associated with each of two feather moss species (Pleurozium schreberi and Hylocomium splendens) on each of 30 lake islands varying in ecosystem properties in northern Sweden. Nitrogen fixation was measured using acetylene reduction, and nifH sequences were amplified using general and cyanobacterial selective primers, separated and analyzed using density gradient gel electrophoresis (DGGE) or cloning, and further sequenced for phylogenetic analyses. Analyses of DGGE fingerprinting patterns revealed two host-specific clusters (one for each moss species), and sequence analysis showed five clusters of nifH phylotypes originating from heterocystous cyanobacteria. For H. splendens only, N(2) fixation was related to both nifH composition and diversity among islands. We demonstrated that the cyanobacterial communities associated with feather mosses show a high degree of host specificity. However, phylotype composition and diversity, and nitrogen fixation, did not differ among groups of islands that varied greatly in their availability of resources. These results suggest that moss species identity, but not extrinsic environmental conditions, serves as the primary determinant of nitrogen-fixing cyanobacterial communities that inhabit mosses.

Place, publisher, year, edition, pages
2011. Vol. 192, no 2, 507-517 p.
Keyword [en]
boreal forest, cyanobacteria, feather mosses, nifH diversity, nitrogen fixation
National Category
URN: urn:nbn:se:su:diva-66867DOI: 10.1111/j.1469-8137.2011.03809.xISI: 000295282700023OAI: diva2:469039
authorCount :5Available from: 2011-12-22 Created: 2011-12-21 Last updated: 2011-12-22Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ininbergs, KarolinaBay, GuillaumeRasmussen, Ulla
By organisation
Department of Botany
In the same journal
New Phytologist

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 11 hits
ReferencesLink to record
Permanent link

Direct link