lnu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Cell-free extracellular enzymatic activity is linked to seasonal temperature changes: a case study in the Baltic Sea
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM). University of Otago, New Zealand.
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM). (MPEA)ORCID-id: 0000-0001-7155-3604
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM). (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID-id: 0000-0002-6405-1347
2016 (Engelska)Ingår i: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 13, nr 9, s. 2815-2821Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Extracellular enzymatic activities (EEA) are a crucial step on the degradation of organic matter. Dissolved (cell-free) extracellular enzymes in seawater can make up a significant contribution of the bulk EEA. However, the factors controlling the proportion of dissolved EEA in the marine environment remain unknown. Here we studied the seasonal changes in the proportion of dissolved relative to total EEA (of alkaline phosphatase [APase], β-glucosidase, [BGase], and leucine aminopeptidase, [LAPase]), in the Baltic Sea for 18 months. The proportio n of dissolved EEA ranged between 37-100%, 0-100%, 34-100% for APase, BGase and LAPase, respectively. A consistent seasonal pattern in the proportion of dissolved EEA was found among all the studied enzymes, with values up to 100% during winter and <40% du ring summer. A significant negative relation was found between the 21proportion of dissolved EEA and temperature, indicating that temperature might be a critical factor controlling the proportion of dissolved relative to total EEA in marine environments. Our results suggest a strong decoupling of hydrolysis rates from mi crobial dynamics in cold waters. This implies that under cold conditions, cell-free enzymes can contribute to substrate availability at large distances from the producing cell, increasing the dissociation between the hydrolysis of organic compounds and the actual microbes producing the enzymes. This also indicates that global warming could come to affect the hydrolysis of organic matter by reducing the hydrolytic activity of cell-free enzymes.

Ort, förlag, år, upplaga, sidor
Copernicus Publications , 2016. Vol. 13, nr 9, s. 2815-2821
Nationell ämneskategori
Ekologi
Forskningsämne
Ekologi, Akvatisk ekologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-49774DOI: 10.5194/bg-13-2815-2016ISI: 000377277300014Scopus ID: 2-s2.0-84969760880OAI: oai:DiVA.org:lnu-49774DiVA, id: diva2:903233
Projekt
EcoChangeTillgänglig från: 2016-02-15 Skapad: 2016-02-15 Senast uppdaterad: 2018-11-15Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Baltar, FedericoLegrand, CatherinePinhassi, Jarone

Sök vidare i DiVA

Av författaren/redaktören
Baltar, FedericoLegrand, CatherinePinhassi, Jarone
Av organisationen
Institutionen för biologi och miljö (BOM)
I samma tidskrift
Biogeosciences
Ekologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 461 träffar
RefereraExporteraLänk till posten
Permanent länk

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