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Oxidative status of Matricaria chamomilla plants related to cadmium and copper uptake

Abstract

Cadmium (Cd) and copper (Cu) uptake by the plants of Matricaria chamomilla and relation to activities of guaiacol peroxidase (GPX, EC 1.11.1.7), catalase (CAT, EC 1.11.1.6) and glutathione reductase (GR, EC 1.6.4.2) up to 7 days of exposure to 3, 60 and 120 μM Cd or Cu was studied. Cd content in rosettes was ca. 10-fold higher in comparison to Cu while Cu was preferentially accumulated in the roots. In line with this observation, increase of CAT and GPX activity was similar in rosettes of Cd and Cu-treated plants, indicating non-redox active properties of Cd and low Cu accumulation. In the roots, Cu showed strong pro-oxidant effect, as judged from extreme stimulation of CAT and GPX, followed by increase of hydrogen peroxide and malondialdehyde. However, GPX seemed to be more important for alleviation of oxidative stress (ca. 93–250-fold higher activity in 120 μM Cu-treated roots). Cd had substantially lower influences and stimulated GR activity more than Cu. Activities of hydrogen peroxide-scavenging enzymes in relation to its accumulation are also discussed.

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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. Abbreviations
CAT:

Catalase

Cd:

Cadmium

Cu:

Copper

GPX:

Guaiacol peroxidase

GR:

Glutathione reductase

MDA:

Malondialdehyde

ROS:

Reactive oxygen species

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Acknowledgements

This work was financially supported by the Science and Technology Assistance Agency (Slovak Republic) under contract No. APVT-20-003004. The authors are grateful to Prof. Mark Seaward (University of Bradford, UK) for constructive comments on the manuscript and language editing and to Bc. František Štork for his excellent technical assistance.

Author information Authors and Affiliations
  1. Department of Botany, Institute of Biology & Ecology, Faculty of Science, P. J. Šafárik University, Mánesova 23, 041 67, Kosice, Slovak Republic

    Jozef Kováčik & Martin Bačkor

Authors
  1. Jozef Kováčik
  2. Martin Bačkor
Corresponding author

Correspondence to Jozef Kováčik.

About this article Cite this article

Kováčik, J., Bačkor, M. Oxidative status of Matricaria chamomilla plants related to cadmium and copper uptake. Ecotoxicology 17, 471–479 (2008). https://doi.org/10.1007/s10646-008-0200-6

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