FN Archimer Export Format
PT J
TI Microbial iron metabolism as revealed by gene expression profiles in contrasted Southern Ocean regimes
BT 
AF Debeljak, Pavla
   Toulza, Eve
   Beier, Sara
   Blain, Stephane
   Obernosterer, Ingrid
AS 1:1,2;2:3;3:4;4:1;5:1;
FF 1:;2:;3:;4:;5:;
C1 Sorbonne Université, CNRS, Laboratoire d'Océanographie Microbienne, LOMIC F‐66650 Banyuls/mer ,France
   Department of Limnology and Bio‐OceanographyUniversity of Vienna A‐1090 Vienna ,Austria
   Université Perpignan Via Domitia, IHPE UMR 5244, CNRS, IFREMER, Univ. Montpellier F‐66860 Perpignan ,France
   Leibniz Institute for Baltic Sea Research Warnemünde, Germany
C2 UNIV PARIS 06, FRANCE
   UNIV VIENNA, AUSTRIA
   UNIV PERPIGNAN, FRANCE
   LEIBNIZ INST BALT SEA RES, GERMANY
UM IHPE
IN WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.933
TC 21
UR https://archimer.ifremer.fr/doc/00488/59921/63113.eps
   https://archimer.ifremer.fr/doc/00488/59921/63114.eps
   https://archimer.ifremer.fr/doc/00488/59921/63115.eps
   https://archimer.ifremer.fr/doc/00488/59921/63116.eps
   https://archimer.ifremer.fr/doc/00488/59921/63117.eps
   https://archimer.ifremer.fr/doc/00488/59921/63118.eps
   https://archimer.ifremer.fr/doc/00488/59921/63119.eps
   https://archimer.ifremer.fr/doc/00488/59921/63120.pdf
   https://archimer.ifremer.fr/doc/00488/59921/63121.pdf
   https://archimer.ifremer.fr/doc/00488/59921/63122.pdf
   https://archimer.ifremer.fr/doc/00488/59921/63123.pdf
   https://archimer.ifremer.fr/doc/00488/59921/63124.pdf
   https://archimer.ifremer.fr/doc/00488/59921/63125.pdf
   https://archimer.ifremer.fr/doc/00488/59921/65653.pdf
LA English
DT Article
CR MD 188 / KEOPS 2
   MD 205 / SOCLIM
BO Marion Dufresne
AB Iron (Fe) is a limiting nutrient in large regions of the ocean, but the strategies of prokaryotes to cope with this micronutrient are poorly known. Using a gene‐specific approach from metatranscriptomics data, we investigated 7 Fe‐related metabolic pathways in microbial communities from High Nutrient Low Chlorophyll and naturally Fe‐fertilized waters in the Southern Ocean. We observed major differences in the contribution of prokaryotic groups at different taxonomic levels to transcripts encoding Fe uptake‐mechanisms, intracellular Fe storage and replacement, and Fe‐related pathways in the tricarboxylic acid (TCA) cycle. The composition of the prokaryotic communities contributing to the transcripts of a given Fe‐related pathway was overall independent of the in situ Fe supply, indicating that microbial taxa utilize distinct Fe‐related metabolic processes. Only a few prokaryotic groups contributed to the transcripts of more than one Fe‐uptake mechanism, suggesting limited metabolic versatility. Taxa‐specific expression of individual genes varied among prokaryotic groups and was substantially higher for all inspected genes in Fe‐limited as compared to naturally fertilized waters, indicating the link between transcriptional state and Fe regime. Different metabolic strategies regarding low Fe concentrations in the Southern Ocean are discussed for two abundant prokaryotic groups, Pelagibacteraceae and Flavobacteriaceae. 
PY 2019
PD JUN
SO Environmental Microbiology
SN 1462-2912
PU Wiley
VL 21
IS 7
UT 000474294900012
BP 2360
EP 2374
DI 10.1111/1462-2920.14621
ID 59921
ER

EF