Antioxidant enzyme activities in Allium species and their cultivars under water stress

Jolán Csiszár, E. Lantos, I. Tari, E. Madoşǎ, B. Wodala, Á Vashegyi, F. Horváth, A. Pécsváradi, M. Szabó, B. Bartha, Á Gallé, A. Lazǎr, G. Coradini, M. Staicu, S. Postelnicu, S. Mihacea, G. Nedelea, L. Erdei

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29 Citations (Scopus)

Abstract

We compared the enzymatic antioxidative defence mechanisms of some regional subspecies of Allium (A. cepa L., A, ascalonicum auct. hort., A. sativum L.) cultivated mainly in the western regions of Romania, and two modern Hungarian climate resistant F1 hybrids. The variability in the activities of antioxidant enzymes Superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR) and glutathione S-transferase (GST) and their changes under soil moisture stress were investigated. 1-week-long water stress revealed that among three Allium species, relative water content decreased only in A. ascalonicum leaves (up to 16%). Unlike root enzymes, the activities of the shoot enzymes, especially POD, GR and GST showed a stronger correlation with the water content of the leaves after one week of water withdrawal; regression coefficients (R2) were 0.359, 0.518 and 0.279, respectively. The ancient populations with elevated (or highly inducible) antioxidant enzyme activities may be inte-resting for further research and for breeding of new Allium varieties.

Original languageEnglish
Pages (from-to)517-523
Number of pages7
JournalPlant, Soil and Environment
Volume53
Issue number12
DOIs
Publication statusPublished - Dec 2007

Keywords

  • Allium species
  • Catalase
  • Drought stress
  • Genetic diversity
  • Glutathione S-transferase
  • Glutathione reductase
  • Guaiacol peroxidase
  • Superoxide dismutase

ASJC Scopus subject areas

  • Soil Science

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    Csiszár, J., Lantos, E., Tari, I., Madoşǎ, E., Wodala, B., Vashegyi, Á., Horváth, F., Pécsváradi, A., Szabó, M., Bartha, B., Gallé, Á., Lazǎr, A., Coradini, G., Staicu, M., Postelnicu, S., Mihacea, S., Nedelea, G., & Erdei, L. (2007). Antioxidant enzyme activities in Allium species and their cultivars under water stress. Plant, Soil and Environment, 53(12), 517-523. https://doi.org/10.17221/2192-pse