Physiology of Matricaria chamomilla exposed to nickel excess

Influence of nickel (Ni) excess on selected physiological aspects of Matricaria chamomilla metabolism after 10 days of presence was studied. Biomass, water content, assimilation pigments and lignin contents were not affected by any of the doses tested. High Ni doses elevated root-soluble proteins. T...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2009-02, Vol.72 (2), p.603-609
Main Authors: Kováčik, Jozef, Klejdus, Bořivoj, Kaduková, Jana, Bačkor, Martin
Format: Article
Language:English
Subjects:
Dose-Response Relationship, Drug
Heavy metals
Histidine
Histidine - analysis
Histidine - metabolism
Hydrogen peroxide
Hydrogen Peroxide - analysis
Hydrogen Peroxide - metabolism
Malondialdehyde
Malondialdehyde - analysis
Malondialdehyde - metabolism
Matricaria - drug effects
Matricaria - physiology
Matricaria chamomilla
Nickel
Nickel - metabolism
Nickel - toxicity
Oxidative stress
Oxidative Stress - drug effects
Oxidative Stress - physiology
Phenols
Plant Roots - drug effects
Plant Roots - physiology
Proline
Soil Pollutants - chemistry
Soil Pollutants - metabolism
Soil Pollutants - toxicity
Time Factors
Water Pollutants, Chemical - metabolism
Water Pollutants, Chemical - toxicity
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Summary:Influence of nickel (Ni) excess on selected physiological aspects of Matricaria chamomilla metabolism after 10 days of presence was studied. Biomass, water content, assimilation pigments and lignin contents were not affected by any of the doses tested. High Ni doses elevated root-soluble proteins. The highest Ni concentration stimulated accumulation of soluble phenolics in both the rosettes and roots, and hydrogen peroxide in the roots. Malondialdehyde content was unaltered, but proline content increased more pronouncedly in the rosettes. Histidine was elevated in the roots, suggesting its involvement in Ni retention. Roots contained 3.4, 7.3 and 6.1 times more Ni than leaf rosettes with 3, 60 and 120 μM treatments, indicating that chamomile is a Ni excluder. Leaf rosettes accumulated 174.1 μg Ni g −1 DW at 120 μM treatment. The results suggest chamomile tolerance to Ni excess and its considerable accumulation in above-ground biomass (ca. 30% of whole plant Ni content).
ISSN:0147-6513
1090-2414
DOI:10.1016/j.ecoenv.2007.12.013