Specific CBF transcription factors and cold-responsive genes fine-tune the 
early triggering response after acquisition of cold priming and memory

Vyse, K.; Schaarschmidt, S.; Erban, A.; Kopka, J.; Zuther, E.

doi:10.1111/ppl.13740

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Specific CBF transcription factors and cold-responsive genes fine-tune the early triggering response after acquisition of cold priming and memory

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Vyse, K.
Transcript Profiling, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society;

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Schaarschmidt, S.
Transcript Profiling, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society;

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Erban, A.
Applied Metabolome Analysis, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society;

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Kopka, J.
Applied Metabolome Analysis, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society;

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Zuther, E.
Transcript Profiling, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society;

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Citation

Vyse, K., Schaarschmidt, S., Erban, A., Kopka, J., & Zuther, E. (2022). Specific CBF transcription factors and cold-responsive genes fine-tune the early triggering response after acquisition of cold priming and memory. Physiologia Plantarum, 174(4): e13740. doi:10.1111/ppl.13740.

Cite as: https://hdl.handle.net/21.11116/0000-000A-AD4E-D

Abstract

Abstract Plants need to adapt to fluctuating temperatures throughout their lifetime. Previous research showed that Arabidopsis memorizes a first cold stress (priming) and improves its primed freezing tolerance further when subjected to a second similar stress after a lag phase. This study investigates primary metabolomic and transcriptomic changes during early cold priming or triggering after three days at 4°C interrupted by a memory phase. DREB1 family transcription factors DREB1C/CBF2, DREB1D/CBF4, DREB1E/DDF2 and DREB1F/DDF1 were strongly significantly induced throughout the entire triggering. During triggering, genes encoding Late Embryogenesis Abundant (LEA), antifreeze proteins or detoxifiers of reactive oxygen species (ROS) were higher expressed compared to priming. Examples of early triggering responders were xyloglucan endotransglucosylase/hydrolase genes encoding proteins involved in cell wall remodelling, while late responders were identified to act in fine-tuning the stress response and developmental regulation. Induction of non-typical members of the DREB subfamily of ERF/AP2 transcription factors, the relatively small number of induced CBF regulon genes and a slower accumulation of selected cold stress associated metabolites indicate that a cold triggering stimulus might be sensed as milder stress in plants compared to priming. Further, strong induction of CBF4 throughout triggering suggests a unique function of this gene for the response to alternating temperatures.