Significance of antioxidative defence under long-term Cd stress

Ádám Solti, Erzsébet Szollosi, Anikó Gémes Juhász, I. Mészáros, F. Fodor, E. Sárvári

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cadmium is a highly toxic heavy metal which causes strong oxidative stress thereby inactivating PSII and the photosynthetic electron transport. However, plants acclimate to moderate Cd stress under longer treatment. Here, the role of antioxidative defence was studied during this acclimation. Micropropagated poplar plants were treated with 10 uM Cd(NO 3) 2 from their four-leaf-stage for four weeks. Increase in the malondialdehyde content and in the ratio of inactive, quenching PSII reaction centres (O NF) was observed in the first two weeks of the treatment. Starting from the third week both parameters decreased in parallel to the rise in the ascorbate peroxidase activity and p-carotene content, both are important in the antioxidative defence in chloroplasts. Therefore, an acute and an acclimation phase were identified as a consequence of the delay in activation of antioxidative defence mechanisms, the protective role of which is important in the acclimation to moderate Cd stress.

Original languageEnglish
Pages (from-to)151-153
Number of pages3
JournalActa Biologica Szegediensis
Volume55
Issue number1
Publication statusPublished - 2011

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Acclimatization
acclimation
Ascorbate Peroxidases
Oxidative stress
Poisons
Carotenoids
Heavy Metals
Malondialdehyde
Cadmium
Quenching
Chemical activation
Chloroplasts
carotenes
Electron Transport
ascorbate peroxidase
defense mechanisms
malondialdehyde
electron transfer
cadmium
heavy metals

Keywords

  • Cadmium
  • oxidative stress
  • photosynthesis
  • Populus

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Significance of antioxidative defence under long-term Cd stress. / Solti, Ádám; Szollosi, Erzsébet; Juhász, Anikó Gémes; Mészáros, I.; Fodor, F.; Sárvári, E.

In: Acta Biologica Szegediensis, Vol. 55, No. 1, 2011, p. 151-153.

Research output: Contribution to journalArticle

Solti, Ádám ; Szollosi, Erzsébet ; Juhász, Anikó Gémes ; Mészáros, I. ; Fodor, F. ; Sárvári, E. / Significance of antioxidative defence under long-term Cd stress. In: Acta Biologica Szegediensis. 2011 ; Vol. 55, No. 1. pp. 151-153.
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