umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
DISTINCT ECOLOGICAL NICHES OF MARINE SYMBIOTIC N-2-FIXING CYANOBACTERIUM CANDIDATUS ATELOCYANOBACTERIUM THALASSA SUBLINEAGES
(EcoChange)
Show others and affiliations
2017 (English)In: Journal of Phycology, ISSN 0022-3646, E-ISSN 1529-8817, Vol. 53, no 2, p. 451-461Article in journal (Refereed) Published
Abstract [en]

A recently described symbiosis between the metabolically streamlined nitrogen-fixing cyanobacterium UCYN-A and a single-celled eukaryote prymnesiophyte alga is widely distributed throughout tropical and subtropical marine waters, and is thought to contribute significantly to nitrogen fixation in these regions. Several UCYN-A sublineages have been defined based on UCYN-A nitrogenase (nifH) sequences. Due to the low abundances of UCYN-A in the global oceans, currently existing molecular techniques are limited for detecting and quantifying these organisms. A targeted approach is needed to adequately characterize the diversity of this important marine cyanobacterium, and to advance understanding of its ecological importance. We present findings on the distribution of UCYN-A sublineages based on high throughput sequencing of UCYN-A nifH PCR amplicons from 78 samples distributed throughout many major oceanic provinces. These UCYN-A nifH fragments were used to define oligotypes, alternative taxonomic units defined by nucleotide positions with high variability. The data set was dominated by a single oligotype associated with the UCYN-A1 sublineage, consistent with previous observations of relatively high abundances in tropical and subtropical regions. However, this analysis also revealed for the first time the widespread distribution of the UCYN-A3 sublineage in oligotrophic waters. Furthermore, distinct assemblages of UCYN-A oligotypes were found in oligotrophic and coastally influenced waters. This unique data set provides a framework for determining the environmental controls on UCYN-A distributions and the ecological importance of the different sublineages.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 53, no 2, p. 451-461
Keyword [en]
Candidatus Atelocyanobacterium thalassa, nifH, nitrogen fixation, nitrogenase, oligotyping, UCYN-A
Identifiers
URN: urn:nbn:se:umu:diva-145215DOI: 10.1111/jpy.12505ISI: 000399745800020PubMedID: 27992651OAI: oai:DiVA.org:umu-145215DiVA, id: diva2:1185028
Available from: 2018-02-23 Created: 2018-02-23 Last updated: 2018-06-09

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMed

Authority records BETA

Zehr, Jonathan P.

Search in DiVA

By author/editor
Zehr, Jonathan P.
In the same journal
Journal of Phycology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf