Different mechanisms trigger an increase in freezing tolerance in Festuca pratensis exposed to flooding stress

Barbara Jurczyk , Tomasz Krępski , Arkadiusz Kosmala , Marcin Rapacz

Abstract

Increased precipitation and snow melt during warmer winters may lead to low temperature flooding and ice encasement formation. These conditions are stressful to plants and may affect their winter survival and spring regrowth. The aim of this study was to assess the effects of low temperature flooding on frost tolerance, photosynthetic performance, osmotic potential, water soluble carbohydrate content and expression of CBF6, Cor14b and LOS2 genes in four genotypes of Festuca pratensis with distinct levels of frost tolerance. It was shown that plants cold acclimated under flooding increase their frost tolerance faster and/or to a greater extent than in non-flooded controls. Changes in the induction kinetics of transcription factors encoding genes are connected with transient growth of frost tolerance in two out of the four genotypes, irrespective of their frost tolerance. A significant and stable increase in frost tolerance observed in the genotype with the lowest tolerance under control conditions was related to higher carbohydrate concentration in the flooded plants. In more frost tolerant genotypes, low temperature flooding also improved their resistance to low-temperature induced photoinhibition of photosynthesis. In conclusion, low-temperature flooding of the plant roots and crowns may boost cold acclimation efficiency in F. pratensis, but this effect is genotype-dependent and varies according to the background.
Author Barbara Jurczyk (FoAE / DoPP)
Barbara Jurczyk,,
- Department of Plant Physiology
, Tomasz Krępski (FoAE / DoPP)
Tomasz Krępski,,
- Department of Plant Physiology
, Arkadiusz Kosmala
Arkadiusz Kosmala,,
-
, Marcin Rapacz (FoAE / DoPP)
Marcin Rapacz,,
- Department of Plant Physiology
Journal seriesEnvironmental and Experimental Botany, ISSN 0098-8472, (A 40 pkt)
Issue year2013
No93
Pages45-54
Publication size in sheets0.5
Keywords in EnglishCold acclimation, Flooding, Frost tolerance, Transcript level, Water soluble carbohydrates
ASJC Classification1110 Plant Science; 1102 Agronomy and Crop Science; 1105 Ecology, Evolution, Behavior and Systematics
DOIDOI:10.1016/j.envexpbot.2013.06.003
URL http://www.sciencedirect.com/science/article/pii/S0098847213000919/pdfft?md5=982218c65698aed03d239ce11d1fd0ae&pid=1-s2.0-S0098847213000919-main.pdf
Internal identifierWRE/2013/147
Languageen angielski
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 8; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.588; WoS Impact Factor: 2013 = 3.003 (2) - 2013=3.529 (5)
Citation count*5 (2016-03-27)
Additional fields
FinansowanieGrant DS3113
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