naa a22 4500 510752217 CHVBK 20180411083108.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11270-012-1417-9 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1417-9 Toxicity of Epoxiconazole to the Marine Diatom Chaetoceros calcitrans [Elektronische Daten] Influence of Growth Conditions and Algal Development Stage [Anis Amara, Françoise Quiniou, Gaël Durand, Monia El Bour, Abdellatif Boudabous, Annick Hourmant] The triazole fungicide epoxiconazole is extensively used to control fungi on crops and may present some potential risk from runoff on coastal ecosystems located close to agricultural areas. Phytotoxicity assessments were conducted on the marine diatom Chaetoceros calcitrans using both the active ingredient and its formulated product (Opus). The 3-day EC50 using cell count was 2.31mg/L for epoxiconazole active ingredient and 2.9μg/L for epoxiconazole-formulated. The fungicide produced an increase of cellular volume, pigment (chlorophylls a, c, and carotenoids) content, ATP synthesis, and rates of photosynthesis and respiration. Progressive algal cell recovery from epoxiconazole effects occurred after 3days, with the increasing cell density. Differences in cell age, light, and nutrient composition induced changes in epoxiconazole sensitivity. Since these parameters affect cellular division rates, the cellular density is an important parameter in toxicity tests. Springer Science+Business Media Dordrecht, 2013 Age cell nationallicence Chaetoceros calcitrans nationallicence Culture conditions nationallicence Epoxiconazole nationallicence Growth nationallicence Physiological parameters nationallicence Amara Anis Lab. de Toxicologie Alimentaire et Cellulaire, UFR Sciences et Techniques, Université Européenne de Bretagne, C.S. 93837, 29238, Brest, Cedex 3, France aut Quiniou Françoise Department of Biogeochemistry and Ecotoxicology, Ifremer, 29280, Plouzané, France aut Durand Gaël IDHESA, B.P. 52, 29280, Plouzané, France aut El Bour Monia Lab. de Pathologie des Organismes Aquatiques, INSTM, Salammbô, Tunis, Tunisia aut Boudabous Abdellatif Lab. de Microorganismes et Biomolécules Actives, Fac. des Sc. de Tunis, 2092, Tunis, Tunisia aut Hourmant Annick Lab. de Toxicologie Alimentaire et Cellulaire, UFR Sciences et Techniques, Université Européenne de Bretagne, C.S. 93837, 29238, Brest, Cedex 3, France aut Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-9 0049-6979 224:2<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1417-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1417-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Amara Anis Lab. de Toxicologie Alimentaire et Cellulaire, UFR Sciences et Techniques, Université Européenne de Bretagne, C.S. 93837, 29238, Brest, Cedex 3, France aut NATIONALLICENCE 700 1- Quiniou Françoise Department of Biogeochemistry and Ecotoxicology, Ifremer, 29280, Plouzané, France aut NATIONALLICENCE 700 1- Durand Gaël IDHESA, B.P. 52, 29280, Plouzané, France aut NATIONALLICENCE 700 1- El Bour Monia Lab. de Pathologie des Organismes Aquatiques, INSTM, Salammbô, Tunis, Tunisia aut NATIONALLICENCE 700 1- Boudabous Abdellatif Lab. de Microorganismes et Biomolécules Actives, Fac. des Sc. de Tunis, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Hourmant Annick Lab. de Toxicologie Alimentaire et Cellulaire, UFR Sciences et Techniques, Université Européenne de Bretagne, C.S. 93837, 29238, Brest, Cedex 3, France aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-9 0049-6979 224:2<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer