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  • 1 Department of Plant Physiology and Molecular Plant Biology, Eötvös Loránd University, Budapest, Hungary
  • | 2 Department of Plant Physiology and Molecular Plant Biology, Eötvös Loránd University, Budapest, Hungary
  • | 3 Agricultural Research Institute of the Hungarian Academy of Sciences Martonvásár, Hungary
  • | 4 Agricultural Research Institute of the Hungarian Academy of Sciences Martonvásár, Hungary
  • | 5 Department of Plant Physiology and Molecular Plant Biology, Eötvös Loránd University, Budapest, Hungary
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The drought stress tolerance of three accessions of Aegilops biuncialis Vis. (Ae225, Ae550 and Ae1050) and two varieties of Triticum aestivum L. (Sakha and Cappelle Desprez) was compared. The activity of superoxide dismutase (SOD) isoenzymes, which reflects the intensity of oxidative stress, changes in the malonic dialdehyde (MDA) content, formed during the lipid peroxidation induced by stress situations, and the inducibility of electron removal systems appearing as an alternative to CO 2 fixation were chosen for the present investigations. Drought stress was simulated using polyethylene glycol (PEG). The order of drought stress tolerance obtained correlated well with the original habitats ofthe varieties. The present results provide a clear illustration of the fact that tolerant varieties respond differently for the parameters tested, suggesting that their resistance can be attributed to different mechanisms. Abbreviations:CuZnSOD=superoxide dismutase isoform with Cu and Zn cofactor metals, MnSOD and FeSOD=superoxide dismutase isoform with Mn and Fe cofactor metals, PVP25= polyvinyl pyrrolidone 25, MDA=malonic dialdehyde, PEG=polyethylene glycol, TCA=trichloro acetic acid, TBA=thiobarbituric acid, ΔF=F m -F s , F m =maximal fluorescence yield, F s =fluorescence yield in steady state

Acta Agronomica Hungarica
Language English
Russian
German
French
Size  
Year of
Foundation
1950
Publication
Programme
ceased
Volumes
per Year
 
Issues
per Year
 
Founder Magyar Tudományos Akadémia   
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0238-0161 (Print)
ISSN 1588-2527 (Online)

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