Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions

B. Varga, S. Bencze, T. Janda, O. Veisz

Research output: Contribution to journalArticle

Abstract

The impacts of climate modification were examined in terms of changes in the stress tolerance of winter wheat varieties. The enzyme reactions of two winter wheat varieties to drought stress, simulated by water withholding in three different phenophases, were analysed in a phytotron experiment in the Centre for Agricultural Research, Hungarian Academy of Sciences. Plants were raised either at ambient CO2 level or at twice this concentration. The quantities of glutathione reductase (GR), glutathione-S-transferase (GST), catalase (CAT), guaiacol peroxidase (POD) and ascorbate peroxidase (APX) were determined from leaf samples collected at the end of the drought treatment.The results showed that antioxidant enzymes may help to counterbalance the reactive oxygen species induced by stress during various stages of the vegetation period. Although there were substantial differences in the changes induced in the activity of individual enzymes by modifications in environmental factors, this activity and its response to stress depended not only on these factors, but also on the developmental stage of the plant. Modifications in enzyme activity could indicate that enhanced CO2 concentration delayed the development of drought stress up to first node appearance, and stimulated antioxidant enzyme activity when drought occurred during ripening.

Original languageEnglish
Pages (from-to)175-183
Number of pages9
JournalActa Agronomica Hungarica
Volume61
Issue number3
DOIs
Publication statusPublished - Sep 1 2013

Fingerprint

abiotic stress
winter wheat
water stress
drought
enzyme activity
antioxidants
environmental factors
enzymatic reactions
enzymes
glutathione-disulfide reductase
ascorbate peroxidase
agricultural research
glutathione transferase
stress tolerance
reactive oxygen species
stress response
catalase
peroxidase
ripening
developmental stages

Keywords

  • antioxidant activity
  • climate change
  • drought stress
  • elevated CO
  • winter cereals

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions. / Varga, B.; Bencze, S.; Janda, T.; Veisz, O.

In: Acta Agronomica Hungarica, Vol. 61, No. 3, 01.09.2013, p. 175-183.

Research output: Contribution to journalArticle

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