Short-term growth of meadow fescue with atmospheric CO2 enrichment decreases freezing tolerance, modifies photosynthetic apparatus performance and changes the expression of some genes during cold acclimation

Barbara Jurczyk , Marcin Rapacz , Krępski Tomasz


The objective of this study was to assess the effect of an elevated atmospheric CO2 molar ratio on freezing tolerance, photosynthetic apparatus performance and expression of CBF6, Cor14b and LOS2 in meadow fescue (Festuca pratensis Huds.). It was shown that cold acclimation under a CO2 molar ratio of 800 μmol mol(air)−1 decreased the freezing tolerance of meadow fescue when compared to the ambient CO2 level. This effect was not related either to changes observed in PSII redox state or to photosynthetic acclimation to cold, which was in fact more effective at an elevated CO2 level. The decrease in freezing tolerance was linked to changes in the expression of CBF6 and LOS2 genes, whereas the protective effect on photosynthetic apparatus was connected with the activation of a non-photochemical mechanism of photoprotection as well as upregulation of FpCOR14b expression.
Author Barbara Jurczyk (FoAE / DoPP)
Barbara Jurczyk,,
- Department of Plant Physiology
, Marcin Rapacz (FoAE / DoPP)
Marcin Rapacz,,
- Department of Plant Physiology
, Krępski Tomasz (FoAE / DoPP)
Krępski Tomasz,,
- Department of Plant Physiology
Journal seriesActa Physiologiae Plantarum, ISSN 0137-5881, (A 25 pkt)
Issue year2013
Publication size in sheets0.55
Keywords in EnglishCold acclimation, Chlorophyll fluorescence, Elevated CO2, Freezing tolerance, Transcript level
ASJC Classification1110 Plant Science; 1102 Agronomy and Crop Science; 1314 Physiology
Internal identifierWRE/2013/148
Languageen angielski
Score (nominal)25
Score sourcejournalList
Publication indicators WoS Citations = 4; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.026; WoS Impact Factor: 2013 = 1.524 (2) - 2013=1.732 (5)
Citation count*
Additional fields
FinansowaneMNiSW N N310 145135
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