FN Archimer Export Format
PT J
TI Potential Effect of Freshwater Virus on the Structure and Activity of Bacterial Communities in the Marennes-Oléron Bay (France)
BT 
AF AUGUET, Jean-Christophe
   MONTANIE, Helene
   HARTMANN, Hans
   LEBARON, P.
   CASAMAYOR, E. O.
   CATALA, P.
   DELMAS, Daniel
AS 1:1;2:1;3:1;4:2;5:3;6:2;7:1;
FF 1:;2:;3:;4:;5:;6:;7:PDG-DOP-DCB-DYNECO-PELAGOS;
C1 Univ La Rochelle, IFREMER, Ctr Rech Ecosyst Littoraux Anthropises, CNRS,UMR 6217, F-17042 La Rochelle, France.
   Univ Paris 06, CNRS, Observ Oceanol Banyuls Sur Mer, UMR 7621, F-66651 Banyuls Sur Mer, France.
   CSIC, Ctr Estudis Avancats Blanes, Dept Ecol Continental, Unitat Limnol, Blanes 17300, Spain.
C2 UNIV LA ROCHELLE, FRANCE
   UNIV PARIS 06, FRANCE
   CSIC, SPAIN
   IFREMER, FRANCE
SI LA ROCHELLE
   BREST
SE PDG-DOP-DCB-DYNECO-PELAGOS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.251
TC 20
UR https://archimer.ifremer.fr/doc/2009/publication-6636.pdf
LA English
DT Article
AB Batch culture experiments using viral enrichment were conducted to test the response of a coastal bacterial community to autochthonous (i.e., co-existing) or allochthonous riverine viruses. The effects of viral infections on bacterial dynamics and activity were assessed by epifluorescence microscopy and thymidine incorporation, respectively, whereas the effect of viral infection on bacterial community composition was examined by polymerase chain reaction-single strand conformation polymorphism 16S ribosomal RNA fingerprinting. The percentages of high nucleic acid-containing cells, evaluated by flow cytometry, were significantly correlated (r (2) = 0.91, n = 12, p < 0.0001) to bacterial production, making this value a good predictor of active cell dynamics along the study. While confinement and temperature were the two principal experimental factors affecting bacterial community composition and dynamics, respectively, additions of freshwater viruses had significant effects on coastal bacterial communities. Thus, foreign viruses significantly reduced net bacterial population increase as compared to the enrichment treated with inactivated virus. Moreover, freshwater viruses recurrently and specifically affected bacterial community composition, as compared to addition of autochthonous viruses. In most cases, the combined treatment viruses and freshwater dissolved organic matter helped to maintain or even enhance species richness in coastal bacterial communities in agreement to the 'killing the winner' hypothesis. Thus, riverine virus input could potentially influence bacterial community composition of the coastal bay albeit with modest modification of bulk bacterial growth.
PY 2009
PD FEB
SO Microbial Ecology
SN 0095-3628
PU Springer
VL 57
IS 2
UT 000262829500009
BP 295
EP 306
DI 10.1007/s00248-008-9428-1
ID 6636
ER

EF