Non-invasive monitoring of the light-induced cyclic photosynthetic electron flow during cold hardening in wheat leaves

Simona Apostol, G. Szalai, László Sujbert, Losanka P. Popova, T. Janda

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effect of irradiance during low temperature hardening was studied in a winter wheat variety. Ten-day-old winter wheat plants were cold-hardened at 5°C for 11 days under light (250 μmol m-2 s-1) or dark (20 μmol m-2 s-1) conditions. The effectiveness of hardening was significantly lower in the dark, in spite of a slight decrease in the Fv/Fm chlorophyll fluorescence induction parameter, indicating the occurrence of photoinhibition during the hardening period in the light. Hardening in the light caused a downshift in the far-red induced AG (afterglow) thermoluminescence band. The faster dark re-reduction of P700 +, monitored by 820-nm absorbance, could also be observed in these plants. These results suggest that the induction of cyclic photosynthetic electron flow may also contribute to the advantage of frost hardening under light conditions in wheat plants.

Original languageEnglish
Pages (from-to)734-740
Number of pages7
JournalZeitschrift fur Naturforschung - Section C Journal of Biosciences
Volume61
Issue number9-10
Publication statusPublished - Sep 2006

Fingerprint

cold tolerance
Triticum
Hardening
electrons
Electrons
Light
wheat
winter wheat
Monitoring
monitoring
leaves
photoinhibition
photophase
frost
absorbance
Chlorophyll
Thermoluminescence
fluorescence
chlorophyll
Fluorescence

Keywords

  • Frost tolerance
  • Photosynthesis
  • Triticum aestivum L.

ASJC Scopus subject areas

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

Cite this

Non-invasive monitoring of the light-induced cyclic photosynthetic electron flow during cold hardening in wheat leaves. / Apostol, Simona; Szalai, G.; Sujbert, László; Popova, Losanka P.; Janda, T.

In: Zeitschrift fur Naturforschung - Section C Journal of Biosciences, Vol. 61, No. 9-10, 09.2006, p. 734-740.

Research output: Contribution to journalArticle

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