FN Archimer Export Format
PT J
TI Daphnia magna Exudates Impact Physiological and Metabolic Changes in Microcystis aeruginosa
BT 
AF Bojadzija Savic, Gorenka
   Edwards, Christine
   Briand, Enora
   Lawton, Linda
   Wiegand, Claudia
   Bormans, Myriam
AS 1:1;2:2;3:3;4:2;5:1;6:1;
FF 1:;2:;3:PDG-ODE-DYNECO-PHYC;4:;5:;6:;
C1 Univ Rennes, CNRS, ECOBIO-UMR 6553, F-35000 Rennes, France
   School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB10 7GJ, UK
   IFREMER, Phycotoxins Laboratory, F-44311 Nantes, France
C2 UNIV RENNES, FRANCE
   UNIV ABERDEEN, UK
   IFREMER, FRANCE
SI NANTES
SE PDG-ODE-DYNECO-PHYC
IN WOS Ifremer UPR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.13
TC 8
UR https://archimer.ifremer.fr/doc/00507/61893/65980.pdf
   https://archimer.ifremer.fr/doc/00507/61893/65981.pdf
LA English
DT Article
DE ;cyanobacteria;secondary metabolites;PCC7806;toxic;mutant;infochemicals
AB While the intracellular function of many toxic and bioactive cyanobacterial metabolites is not yet known, microcystins have been suggested to have a protective role in the cyanobacterial metabolism, giving advantage to toxic over nontoxic strains under stress conditions. The zooplankton grazer Daphnia reduce cyanobacterial dominance until a certain density, which may be supported by Daphnia exudates, affecting the cyanobacterial physiological state and metabolites’ production. Therefore, we hypothesized that D. magna spent medium will impact the production of cyanobacterial bioactive metabolites and affect cyanobacterial photosynthetic activity in the nontoxic, but not the toxic strain. Microcystin (MC-LR and des-MC-LR) producing M. aeruginosa PCC7806 and its non-microcystin producing mutant were exposed to spent media of different D. magna densities and culture durations. D. magna spent medium of the highest density (200/L) cultivated for the shortest time (24 h) provoked the strongest effect. D.magna spent medium negatively impacted the photosynthetic activity of M. aeruginosa PCC7806, as well as the dynamics of intracellular and extracellular cyanobacterial metabolites, while its mutant was unaffected. In the presence of Daphnia medium, microcystin does not appear to have a protective role for the strain. On the contrary, extracellular cyanopeptolin A increased in M. aeruginosa PCC7806 although the potential anti-grazing role of this compound would require further studies 
PY 2019
PD JUN
SO Toxins
SN 2072-6651
PU MDPI AG
VL 11
IS 7
UT 000482110000011
DI 10.3390/toxins11070421
ID 61893
ER

EF