caa a22 4500 475783468 CHVBK 20180406123651.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1023/A:1008108531280 doi (NATIONALLICENCE)springer-10.1023/A:1008108531280 Potential use of Cu 2+ , K+ and Na+ for the destruction of Caulerpa taxifolia [Elektronische Daten] differential effects on photosynthetic parameters [M. Uchimura, A. Rival, A. Nato, R. Sandeaux, J. Sandeaux, J.C. Baccou] Chemical techniques were investigated in order to eradicate Caulerpa taxifolia, a green alga spreading at a remarkable rate in the Mediterranean Sea. The action of copper, potassium and sodium ions on survival rates and photosynthetic parameters was compared, in order to optimise the conditions of further in situ treatments. The lethal doses were determined and the impact of the studied cations on photosynthesis and respiration rates and PSII photochemistry was analysed from measurements of net oxygen exchanges and chlorophyll fluorescence. The Cu2+ concentrations required to obtain 100% mortality were 15 × 102 to 104 times lower than those of K+ and Na+. Respiration was slightly affected whatever the salt concentration,while photosynthesis could be totally inhibited depending on the applied treatment. Changes in the structure of the Ribulose-1,5-biphosphate carboxylase/oxygenase (RubisCO, EC: 4.1.1.39) were also detected when C. taxifolia under went cation treatments (10 mg L-1 Cu2+, 1h; 20 gL-1 K+, 3 h; 20 g L-1 Na+, 1 h). Given the high concentration and long incubation periods required with K+ and Na+ ions, these cations are not suitable to be used in situ. Our results make possible the utilisation of copper cations following technical approaches such asion-exchange textile covers, which allows a controlled release of cupric ions without dissemination in the marine environment. Kluwer Academic Publishers, 2000 Caulerpa taxifolia nationallicence chlorophyll fluorescence nationallicence copper nationallicence photosynthesis nationallicence potassium nationallicence respiration nationallicence RubisCO nationallicence sodium nationallicence Uchimura M. Laboratoire Génie Biologique et Sciences des Aliments, Université de Montpellier II, Place Eugène Bataillon C.c.24, 34095, Montpellier Cedex 5, France aut Rival A. Laboratoire GeneTrop, IRD, CIRAD-CP, 911, Av. Agropolis, BP 5045, 34032, Montpellier Cedex 1, France aut Nato A. Laboratoire de Morphogénèse Végétale Expérimentale, Université Paris XI, Bât. 360, 91405, ORSAY Cedex, France aut Sandeaux R. Laboratoire des Matériaux et Procédés Membranaires, UMR 5635, CNRS, 1919 route de Mende, 34293, Montpellier Cedex 5, France aut Sandeaux J. Laboratoire des Matériaux et Procédés Membranaires, UMR 5635, CNRS, 1919 route de Mende, 34293, Montpellier Cedex 5, France aut Baccou J.C. Laboratoire Génie Biologique et Sciences des Aliments, Université de Montpellier II, Place Eugène Bataillon C.c.24, 34095, Montpellier Cedex 5, France aut Journal of Applied Phycology Kluwer Academic Publishers 12/1(2000-02-01), 15-23 0921-8971 12:1<15 2000 12 10811 https://doi.org/10.1023/A:1008108531280 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008108531280 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Uchimura M. Laboratoire Génie Biologique et Sciences des Aliments, Université de Montpellier II, Place Eugène Bataillon C.c.24, 34095, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Rival A. Laboratoire GeneTrop, IRD, CIRAD-CP, 911, Av. Agropolis, BP 5045, 34032, Montpellier Cedex 1, France aut NATIONALLICENCE 700 1- Nato A. Laboratoire de Morphogénèse Végétale Expérimentale, Université Paris XI, Bât. 360, 91405, ORSAY Cedex, France aut NATIONALLICENCE 700 1- Sandeaux R. Laboratoire des Matériaux et Procédés Membranaires, UMR 5635, CNRS, 1919 route de Mende, 34293, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Sandeaux J. Laboratoire des Matériaux et Procédés Membranaires, UMR 5635, CNRS, 1919 route de Mende, 34293, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Baccou J.C. Laboratoire Génie Biologique et Sciences des Aliments, Université de Montpellier II, Place Eugène Bataillon C.c.24, 34095, Montpellier Cedex 5, France aut NATIONALLICENCE 773 0- Journal of Applied Phycology Kluwer Academic Publishers 12/1(2000-02-01), 15-23 0921-8971 12:1<15 2000 12 10811 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer