caa a22 4500 445894652 CHVBK 20180317145627.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10750-010-0589-9 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0589-9 Differential responses of Myriophyllum alterniflorum DC (Haloragaceae) organs to copper: physiological and developmental approaches [Elektronische Daten] [David Delmail, Pascal Labrousse, Philippe Hourdin, Laure Larcher, Christian Moesch, Michel Botineau] Copper is an essential element for the function of metabolic pathways in many living organisms like photosynthesis in plants. But, for the last decades, anthropogenic sources and release of Cu lead to environmental pollution particularly in aquatic ecosystems. The aquatic plant, Myriophyllum alterniflorum, known as a bioindicator of metal pollution, could be used as biomonitor. The aim of this study is to evaluate biomarkers responses of watermilfoil during Cu pollution at high environmental levels (100μgl−1 CuSO4) in controlled conditions. Morphological and anatomical features like a new double endodermis (DE) layer were evidenced in response to Cu treatment. Moreover, physiological parameters like pigments contents, osmotic potential and proline content present a differential response to Cu stress in young and old leaves of watermilfoil. Finally, despite a rapid and strong phytoaccumulation of Cu, only young leaves are slightly affected in their cell membrane integrity as indicated by MDA content. In comparison with the Cu effect on other aquatic macrophytes, M.alterniflorum develops particular protection mechanisms like the ROS scavenging using proline rather than carotenoids, the reduction of water loss with the DE and the heavy metal elimination through senescence to protect preferentially the photosynthetic components of the young leaves and the main-stem elongation. Due to its Cu sensitivity, M. alterniflorum appears as important in the field of environmental studies using plant biomarkers. Springer Science+Business Media B.V., 2011 Myriophyllum alterniflorum nationallicence Copper nationallicence Heavy metals nationallicence Ontogeny nationallicence Oxidative stress nationallicence Double endodermis nationallicence Delmail David Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut Labrousse Pascal Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut Hourdin Philippe Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut Larcher Laure Pharmacology and Toxicology department, CHU Dupuytren, 2 avenue Martin Luther King, 87042, Limoges, France aut Moesch Christian Pharmacology and Toxicology department, CHU Dupuytren, 2 avenue Martin Luther King, 87042, Limoges, France aut Botineau Michel Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut Hydrobiologia Springer Netherlands 664/1(2011-04-01), 95-105 0018-8158 664:1<95 2011 664 10750 https://doi.org/10.1007/s10750-010-0589-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0589-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Delmail David Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut NATIONALLICENCE 700 1- Labrousse Pascal Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut NATIONALLICENCE 700 1- Hourdin Philippe Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut NATIONALLICENCE 700 1- Larcher Laure Pharmacology and Toxicology department, CHU Dupuytren, 2 avenue Martin Luther King, 87042, Limoges, France aut NATIONALLICENCE 700 1- Moesch Christian Pharmacology and Toxicology department, CHU Dupuytren, 2 avenue Martin Luther King, 87042, Limoges, France aut NATIONALLICENCE 700 1- Botineau Michel Laboratory of Botany and Cryptogamy, Faculty of Pharmacy, University of Limoges, GRESE EA 4330, 2 rue du Docteur Marcland, 87025, Limoges, France aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 664/1(2011-04-01), 95-105 0018-8158 664:1<95 2011 664 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer