FN Archimer Export Format
PT J
TI Historical records from dated sediment cores reveal the multidecadal dynamic of the toxic dinoflagellate     Alexandrium minutum     in the Bay of Brest (France)
BT 
AF KLOUCH, Khadidja
   SCHMIDT, Sabine
   ANDRIEUX-LOYER, Francoise
   LE GAC, Mickael
   HERVIO-HEATH, Dominique
   QUI-MINET, Zujaila Nohemi
   QUERE, Julien
   BIGEARD, Estelle
   GUILLOU, Laure
   SIANO, Raffaele
AS 1:1,2;2:3;3:1;4:1;5:4;6:1;7:1;8:2;9:2;10:1;
FF 1:PDG-ODE-DYNECO-PELAGOS;2:;3:PDG-ODE-DYNECO-PELAGOS;4:PDG-ODE-DYNECO-PELAGOS;5:PDG-RBE-SG2M-LSEM;6:PDG-ODE-DYNECO-PELAGOS;7:PDG-ODE-DYNECO-PELAGOS;8:;9:;10:PDG-ODE-DYNECO-PELAGOS;
C1 IFREMER, Ctr Brest, DYNECO PELAGOS, BP 70 ZI Pointe Diable, F-29280 Plouzane, France.
   Univ Paris 06, Univ Paris 04, CNRS, Equipe DIPO,Stn Biol Roscoff,Adaptat & Divers Mil, Pl Georges Teissier,CS90074, F-29688 Roscoff, France.
   Univ Bordeaux, EPOC UMR5805, F-33605 Pessac, France.
   IFREMER, RBE, SG2M, Lab Sante Environm & Microbiol, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV BORDEAUX, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-PELAGOS
   PDG-RBE-SG2M-LSEM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.72
TC 27
UR https://archimer.ifremer.fr/doc/00334/44516/44212.pdf
LA English
DT Article
DE ;paleoecology;ancient DNA;real-time PCR;harmful algal blooms (HAB);dinoflagellates;coastal ecology
AB The multiannual dynamic of the cyst-forming and toxic marine dinoflagellate Alexandrium minutum was studied over a time scale of about 150 years by a paleoecological approach based on ancient DNA (aDNA) quantification and cyst revivification data obtained from two dated sediment cores of the Bay of Brest (Brittany, France). The first genetic traces of the species presence in the study area dated back to 1873 ± 6. Specific aDNA could be quantified by a newly-developed real-time PCR assay in the upper core layers, in which the germination of the species (in up to 17–19 year-old sediments) was also obtained. In both cores studied, our quantitative paleogenetic data showed a statistically significant increasing trend in the abundance of A. minutum ITS1 rDNA copies over time, corroborating three decades of local plankton data that have documented an increasing trend in the species cell abundance. By comparison, paleogenetic data of the dinoflagellate Scrippsiella donghaienis did not show a coherent trend between the cores studied, supporting the hypothesis of the existence of a species-specific dynamic of A. minutum in the study area. This work contributes to the development of paleoecological research, further showing its potential for biogeographical, ecological and evolutionary studies on marine microbes.
PY 2016
PD JUN
SO Fems Microbiology Ecology
SN 0168-6496
PU Oxford Univ Press
VL 92
IS 7
UT 000379693700012
DI 10.1093/femsec/fiw101
ID 44516
ER

EF