caa a22 4500 463186028 CHVBK 20180406164853.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s00726-006-0343-9 doi (NATIONALLICENCE)springer-10.1007/s00726-006-0343-9 Polyamine metabolism in sunflower plants under long-term cadmium or copper stress [Elektronische Daten] [M. D. Groppa, M. P. Ianuzzo, M. L. Tomaro, M. P. Benavides] Summary.: The effect of different doses of cadmium and copper was studied in relation to growth and polyamine (Pas) metabolism in shoots of sunflower plants. Cadmium accumulated to higher levels than copper and shoot length was reduced by 0.5 and 1 mM Cd, but only by 1 mM Cu. At 1 mM of Cd or Cu, Put content increased 270% and 160% with Cd2+ and Cu2+, respectively. Spermidine (Spd) was modified only by 1 mM Cd, while spermine (Spm) declined after seeds germinated, increasing thereafter but only with 1 mM Cd or Cu (273% over the controls for Cd and 230% for Cu at day 16). Both ADC and ODC activities were increased by 1 mM Cd, whereas 1 mM Cu enhanced ADC activity, but reduced ODC activity at every concentration used. The role of Pas as markers of Cd or Cu toxicity is discussed. Springer-Verlag, 2006 Keywords: Polyamines - Cadmium - Copper - Sunflower nationallicence ADC : arginine decarboxylase nationallicence DAO : diamine oxidase nationallicence ODC : ornithine decarboxylase nationallicence Pas : polyamines nationallicence Pro : proline nationallicence Put : putrescine nationallicence Spd : spermidine nationallicence Spm : spermine nationallicence Groppa M. D. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut Ianuzzo M. P. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut Tomaro M. L. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut Benavides M. P. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut Amino Acids Springer-Verlag 32/2(2007-02-01), 265-275 0939-4451 32:2<265 2007 32 726 https://doi.org/10.1007/s00726-006-0343-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00726-006-0343-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Groppa M. D. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Ianuzzo M. P. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Tomaro M. L. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut NATIONALLICENCE 700 1- Benavides M. P. Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina aut NATIONALLICENCE 773 0- Amino Acids Springer-Verlag 32/2(2007-02-01), 265-275 0939-4451 32:2<265 2007 32 726 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer