FN Archimer Export Format
PT J
TI Algicidal effects of Zostera marina L. and Zostera noltii Hornem. extracts on the neuro-toxic bloom-forming dinoflagellate Alexandrium catenella
BT 
AF LAABIR, Mohamed
   GRIGNON-DUBOIS, Micheline
   MASSERET, Estelle
   REZZONICO, Bernadette
   SOTERAS, Giselle
   ROUQUETTE, Manuel
   RIEUVILLENEUVE, Fabien
   CECCHI, Philippe
AS 1:1;2:2;3:1;4:2;5:3;6:1;7:1;8:;
FF 1:;2:;3:;4:;5:;6:PDG-RBE-HMMN-RHBL;7:;8:;
C1 Univ Montpellier 2, Ecol Syst Marine Cotiers UMR5119, IFREMER, CNRS,UM2,IRD,UM1, F-34095 Montpellier 5, France.
   Univ Bordeaux, UMR EPOC 5805, F-33405 Talence, France.
   Conseil Gen Dept Herault, F-34087 Montpellier, France.
C2 UNIV MONTPELLIER, FRANCE
   UNIV BORDEAUX, FRANCE
   CONSEIL GEN DEPT HERAULT, FRANCE
   IFREMER, FRANCE
   IRD, FRANCE
SI BOULOGNE
SE PDG-RBE-HMMN-RHBL
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-univ-france
IF 1.471
TC 29
UR https://archimer.ifremer.fr/doc/00170/28095/26720.pdf
LA English
DT Article
DE ;Growth inhibition;Allelopathy;Alexandrium catenella;Zostera marina;Zostera noltii;Phenolics
AB The inhibitory effects of crude extracts of Zostera marina L and Zostera noltii Hornemann on the growth of the toxic red tide dinoflagellate Alexandrium catenella were investigated through bio-assays. Methanolic and aqueous extracts were prepared from fresh and detrital leaves of Z. marina and Z. noltii collected in the Thau lagoon and Arcachon bay (France). All the extracts exhibited significant inhibition of A. catenella growth, whatever the species and without the need of continuous addition of extracts. The effective concentrations (EC50) varied in the range 0.036-0.199 g L-1 for Z. noltii and 0.036-0.239 g L-1 for Z. marina. Methanolic extracts prepared from fresh plant tissues were the most potent, with EC50 of 0.036-0.039 and 0.036-0.045 g L-1, for Z. noltii and Z marina, respectively. After exposure to the extracts, Alexandrium cells exhibited severe morphological anomalies. Hence many cells exhibited a lytic membrane and became necrotic. Cellular degradation appeared dose- and time-dependent. The observed algicidal activities demonstrated the existence of bioactive molecules in the tissues of Zostera leaves, which were stable in the culture medium. The chemical contents of the crude extracts were determined by NMR, LC/MS, and quantitative HPLC. Results showed the predominance of flavonoids and phenolic acids. The total phenolics concentrations correlated negatively with the EC50 values, suggesting that these secondary metabolites might be responsible for the observed algicidal effects.
PY 2013
PD NOV
SO Aquatic Botany
SN 0304-3770
PU Elsevier Science Bv
VL 111
UT 000328099800004
BP 16
EP 25
DI 10.1016/j.aquabot.2013.07.010
ID 28095
ER

EF