Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Chemical microenvironments and single-cell carbon and nitrogen uptake in field-collected colonies of Trichodesmium under different pCO2
Vise andre og tillknytning
2017 (engelsk)Inngår i: The ISME Journal, ISSN 1751-7362, E-ISSN 1751-7370, Vol. 11, s. 1305-1317Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Gradients of oxygen (O2) and pH, as well as small-scale fluxes of carbon (C), nitrogen (N) and O2 were investigated under different partial pressures of carbon dioxide (pCO2) in field-collected colonies of the marine dinitrogen (N2)-fixing cyanobacterium Trichodesmium. Microsensor measurements indicated that cells within colonies experienced large fluctuations in O2, pH and CO2concentrations over a day–night cycle. O2 concentrations varied with light intensity and time of day, yet colonies exposed to light were supersaturated with O2 (up to ~200%) throughout the light period and anoxia was not detected. Alternating between light and dark conditions caused a variation in pH levels by on average 0.5 units (equivalent to 15 nmol l−1 proton concentration). Single-cell analyses of C and N assimilation using secondary ion mass spectrometry (SIMS; large geometry SIMS and nanoscale SIMS) revealed high variability in metabolic activity of single cells and trichomes of Trichodesmium, and indicated transfer of C and N to colony-associated non-photosynthetic bacteria. Neither O2 fluxes nor C fixation by Trichodesmium were significantly influenced by short-term incubations under different pCO2 levels, whereas N2fixation increased with increasing pCO2. The large range of metabolic rates observed at the single-cell level may reflect a response by colony-forming microbial populations to highly variable microenvironments.

sted, utgiver, år, opplag, sider
2017. Vol. 11, s. 1305-1317
HSV kategori
Forskningsprogram
Ekosystem och arthistoria
Identifikatorer
URN: urn:nbn:se:nrm:diva-2537DOI: 10.1038/ismej.2017.15OAI: oai:DiVA.org:nrm-2537DiVA, id: diva2:1162126
Tilgjengelig fra: 2017-12-03 Laget: 2017-12-03 Sist oppdatert: 2017-12-04bibliografisk kontrollert

Open Access i DiVA

fulltext(1615 kB)50 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1615 kBChecksum SHA-512
f6fa9fa7a57457c2b99fe8c81a9fc6be7c4e71b834e6088eff0fda3ed21603552239fa44fc9b2ad36c52e590559df519674d384e9e13833826f57afcb0a161b1
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fullteksthttps://www.nature.com/articles/ismej201715

Søk i DiVA

Av forfatter/redaktør
Whitehouse, Martin J.
Av organisasjonen
I samme tidsskrift
The ISME Journal

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 50 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 89 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf