FN Archimer Export Format
PT J
TI Chemical characterization of exopolysaccharides from Antarctic marine bacteria
BT 
AF NICHOLS, Carol
   LARDIERE, Sandrine
   BOWMAN, John
   NICHOLS, Peter
   GIBSON, John
   GUEZENNEC, Jean
AS 1:1;2:2;3:3;4:4;5:4;6:2;
FF 1:;2:PDG-DOP-DCB-BM-BMM;3:;4:;5:;6:PDG-DOP-DCB-BM-BMM;
C1 Univ Tasmania, Ctr Marine Sci, Sch Agr Sci, Hobart, Tas 7000, Australia.
   Inst Francais Rech Exploitat Mer, Ctr Brest, F-29280 Plouzane, France.
   Univ Tasmania, Australian Food Safety Ctr, Hobart, Tas 7000, Australia.
   Commonwealth Sci & Ind Res Org, Marine Res, Hobart, Tas 7000, Australia.
C2 UNIV TASMANIA, AUSTRALIA
   IFREMER, FRANCE
   UNIV TASMANIA, AUSTRALIA
   COMMONWEALTH SCI & IND RES ORG, AUSTRALIA
SI BREST
SE PDG-DOP-DCB-BM-BMM
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 2.674
TC 114
UR https://archimer.ifremer.fr/doc/2005/publication-623.pdf
LA English
DT Article
DE ;Marine particulates;Sea ice;Marine bacteria;Antarctica;Exopolysaccharides
AB Exopolysaccharides (EPS) may have an important role in the Antarctic marine environment, possibly acting as ligands for trace metal nutrients such as iron or providing cryoprotection for growth at low temperature and high salinity. Ten bacterial strains, isolated from Southern Ocean particulate material or from sea ice, were characterized. Whole cell fatty acid profiles and 16S rRNA gene sequences showed that the isolates included representatives of the genera Pseudoalteromonas, Shewanella, Polaribacter, and Flavobacterium as well as one strain, which constituted a new bacterial genus in the family Flavobacteriaceae. The isolates are, therefore, members of the "Gammaproteobacteria" and Cytophaga-Flexibacter-Bacteroides, the taxonomic groups that have been shown to dominate polar sea ice and seawater microbial communities. Exopolysaccharides produced by Antarctic isolates were characterized. Chemical composition and molecular weight data revealed that these EPS were very diverse, even among six closely related Pseudoalteromonas isolates. Most of the EPS contained charged uronic acid residues; several also contained sulfate groups. Some strain produced unusually large polymers (molecular weight up to 5.7 MDa) including one strain in which EPS synthesis is stimulated by low temperature. This study represents a first step in the understanding of the role of bacterial EPS in the Antarctic marine environment.
PY 2005
PD MAY
SO Microbial Ecology
SN 0095-3628
PU Springer
VL 49
IS 4
UT 000231704600010
BP 578
EP 589
DI 10.1007/s00248-004-0093-8
ID 623
ER

EF