Cargando…

Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment

The structure of sea-ice bacterial communities is frequently different from that in seawater. Bacterial entrainment in sea ice has been studied with traditional microbiological, bacterial abundance, and bacterial production methods. However, the dynamics of the changes in bacterial communities durin...

Descripción completa

Detalles Bibliográficos
Autores principales: Eronen-Rasimus, Eeva, Kaartokallio, Hermanni, Lyra, Christina, Autio, Riitta, Kuosa, Harri, Dieckmann, Gerhard S, Thomas, David N
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley & Sons Ltd 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3937737/
https://www.ncbi.nlm.nih.gov/pubmed/24443388
http://dx.doi.org/10.1002/mbo3.157
_version_ 1782305535672975360
author Eronen-Rasimus, Eeva
Kaartokallio, Hermanni
Lyra, Christina
Autio, Riitta
Kuosa, Harri
Dieckmann, Gerhard S
Thomas, David N
author_facet Eronen-Rasimus, Eeva
Kaartokallio, Hermanni
Lyra, Christina
Autio, Riitta
Kuosa, Harri
Dieckmann, Gerhard S
Thomas, David N
author_sort Eronen-Rasimus, Eeva
collection PubMed
description The structure of sea-ice bacterial communities is frequently different from that in seawater. Bacterial entrainment in sea ice has been studied with traditional microbiological, bacterial abundance, and bacterial production methods. However, the dynamics of the changes in bacterial communities during the transition from open water to frozen sea ice is largely unknown. Given previous evidence that the nutritional status of the parent water may affect bacterial communities during ice formation, bacterial succession was studied in under ice water and sea ice in two series of mesocosms: the first containing seawater from the North Sea and the second containing seawater enriched with algal-derived dissolved organic matter (DOM). The composition and dynamics of bacterial communities were investigated with terminal restriction fragment length polymorphism (T-RFLP), and cloning alongside bacterial production (thymidine and leucine uptake) and abundance measurements (measured by flow cytometry). Enriched and active sea-ice bacterial communities developed in ice formed in both unenriched and DOM-enriched seawater (0–6 days). γ-Proteobacteria dominated in the DOM-enriched samples, indicative of their capability for opportunistic growth in sea ice. The bacterial communities in the unenriched waters and ice consisted of the classes Flavobacteria, α-and γ-Proteobacteria, which are frequently found in natural sea ice in polar regions. Furthermore, the results indicate that seawater bacterial communities are able to adapt rapidly to sudden environmental changes when facing considerable physicochemical stress such as the changes in temperature, salinity, nutrient status, and organic matter supply during ice formation.
format Online
Article
Text
id pubmed-3937737
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher John Wiley & Sons Ltd
record_format MEDLINE/PubMed
spelling pubmed-39377372014-03-07 Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment Eronen-Rasimus, Eeva Kaartokallio, Hermanni Lyra, Christina Autio, Riitta Kuosa, Harri Dieckmann, Gerhard S Thomas, David N Microbiologyopen Original Research The structure of sea-ice bacterial communities is frequently different from that in seawater. Bacterial entrainment in sea ice has been studied with traditional microbiological, bacterial abundance, and bacterial production methods. However, the dynamics of the changes in bacterial communities during the transition from open water to frozen sea ice is largely unknown. Given previous evidence that the nutritional status of the parent water may affect bacterial communities during ice formation, bacterial succession was studied in under ice water and sea ice in two series of mesocosms: the first containing seawater from the North Sea and the second containing seawater enriched with algal-derived dissolved organic matter (DOM). The composition and dynamics of bacterial communities were investigated with terminal restriction fragment length polymorphism (T-RFLP), and cloning alongside bacterial production (thymidine and leucine uptake) and abundance measurements (measured by flow cytometry). Enriched and active sea-ice bacterial communities developed in ice formed in both unenriched and DOM-enriched seawater (0–6 days). γ-Proteobacteria dominated in the DOM-enriched samples, indicative of their capability for opportunistic growth in sea ice. The bacterial communities in the unenriched waters and ice consisted of the classes Flavobacteria, α-and γ-Proteobacteria, which are frequently found in natural sea ice in polar regions. Furthermore, the results indicate that seawater bacterial communities are able to adapt rapidly to sudden environmental changes when facing considerable physicochemical stress such as the changes in temperature, salinity, nutrient status, and organic matter supply during ice formation. John Wiley & Sons Ltd 2014-02 2014-01-20 /pmc/articles/PMC3937737/ /pubmed/24443388 http://dx.doi.org/10.1002/mbo3.157 Text en © 2014 The Authors. MicrobiologyOpen published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Eronen-Rasimus, Eeva
Kaartokallio, Hermanni
Lyra, Christina
Autio, Riitta
Kuosa, Harri
Dieckmann, Gerhard S
Thomas, David N
Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title_full Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title_fullStr Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title_full_unstemmed Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title_short Bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
title_sort bacterial community dynamics and activity in relation to dissolved organic matter availability during sea-ice formation in a mesocosm experiment
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3937737/
https://www.ncbi.nlm.nih.gov/pubmed/24443388
http://dx.doi.org/10.1002/mbo3.157
work_keys_str_mv AT eronenrasimuseeva bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT kaartokalliohermanni bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT lyrachristina bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT autioriitta bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT kuosaharri bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT dieckmanngerhards bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment
AT thomasdavidn bacterialcommunitydynamicsandactivityinrelationtodissolvedorganicmatteravailabilityduringseaiceformationinamesocosmexperiment