caa a22 4500 463160983 CHVBK 20180406164747.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10535-007-0060-6 doi (NATIONALLICENCE)springer-10.1007/s10535-007-0060-6 Organ-dependent responses of the african rice to short-term iron toxicity: Ferritin regulation and antioxidative responses [Elektronische Daten] [V. Majerus, P. Bertin, V. Swenden, A. Fortemps, S. Lobréaux, S. Lutts] Hydroponically grown African rice (Oryza glaberrima) was exposed for 72 h to a high Fe2+ concentration (500 mg dm−3) to identify the first steps of iron toxicity response in various organs. Iron accumulated in all plant parts analysed and had only a limited impact on absorption and translocation of other nutrients. The content of the iron-storage protein ferritin increased as a consequence of transcription stimulation or increase in mRNA stability and culminated after 48 h of treatment in laminae and to a lesser extent in sheaths but was not detected in roots. Although endogenous iron concentrations were similar in sheaths and laminae, superoxide dismutase activity was stimulated only in sheaths while ascorbate peroxidase activity increased mainly in laminae. It is concluded that both ferritin synthesis and antioxidative response may play a key role in the resistance of Oryza glaberrima to iron toxicity but that their relative importance are not the same in all organs. Institute of Experimental Botany, ASCR, 2007 ascorbate nationallicence glutathione nationallicence malondialdehyde nationallicence Oryza glaberrima nationallicence oxidative stress nationallicence superoxide dismutase nationallicence APX : ascorbate peroxidase nationallicence ASA : ascorbate nationallicence BCIP : 5-bromo-4-chloro-3-indolyl phosphate nationallicence DTT : dithiotreitol nationallicence GSH : reduced glutathione nationallicence GSSG : oxidized glutathione nationallicence MDA : malondialdehyde nationallicence MPA : metaphosphoric acid nationallicence NBT : nitroblue tetrazolium nationallicence NEM : N-ethylmaleimide nationallicence OPA : o-phthalaldehyde nationallicence PMSF : phenazine methosulfate nationallicence PVP : polyvinylpyrrolidone nationallicence SOD : superoxide dismutase nationallicence TCA : trichloroacetic acid nationallicence Majerus V. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut Bertin P. Unité d'Ecophysiologie et Amélioration Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut Swenden V. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut Fortemps A. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut Lobréaux S. Ecole Nationale Supérieure d'Agronomie, Place Viala, F-34060, Montpellier Cedex 1, France aut Lutts S. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 303-312 0006-3134 51:2<303 2007 51 10535 https://doi.org/10.1007/s10535-007-0060-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0060-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Majerus V. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 700 1- Bertin P. Unité d'Ecophysiologie et Amélioration Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 700 1- Swenden V. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 700 1- Fortemps A. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 700 1- Lobréaux S. Ecole Nationale Supérieure d'Agronomie, Place Viala, F-34060, Montpellier Cedex 1, France aut NATIONALLICENCE 700 1- Lutts S. Unité de Biologie Végétale, Université Catholique de Louvain, Place Croix du Sud, B-1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 773 0- Biologia Plantarum Kluwer Academic Publishers-Consultants Bureau 51/2(2007-06-01), 303-312 0006-3134 51:2<303 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer