Role of ploidy in cadmium and nickel uptake by Matricaria chamomilla plants

0357895 - ÚEB 2011 RIV GB eng J - Journal Article
Kováčik, J. - Klejdus, B. - Grúz, Jiří - Malčovská, S. - Hedbavny, J.
Role of ploidy in cadmium and nickel uptake by Matricaria chamomilla plants.
Food and Chemical Toxicology. Roč. 48, 8-9 (2010), s. 2109-2114. ISSN 0278-6915. E-ISSN 1873-6351
R&D Projects: GA AV ČR KAN200380801; GA ČR GA525/07/0338
Institutional research plan: CEZ:AV0Z50380511
Keywords : Antioxidants * Heavy metals * Oxidative stress
Subject RIV: ED - Physiology
Impact factor: 2.602, year: 2010

Cadmium and nickel uptake by diploid and tetraploid chamomile (Matricaria chamomilla L.) cultivars (Novbona and Lutea, respectively) exposed to 60 mu M solutions of individual metals over 7 days was studied. Diploid plants accumulated higher amount of Cd in both shoots and roots compared to tetraploid plants while Ni accumulation was ploidy-independent. Cd presence caused higher accumulation of total soluble phenols and flavonoids and higher phenylalanine ammonia-lyase and guaiacol-peroxidase activities in diploid cultivar in comparison with tetraploid but phenolic acids did not show direct correlation with metal accumulation and even decreased in the leaves of Ni-exposed plants. Lignin content was preferentially elevated in the roots of diploid cultivar. Among 17 free amino acids, their sum increased mainly in the leaves of Cd-exposed plants (owing to increase in serine, alanine and proline).
Permanent Link: http://hdl.handle.net/11104/0196071