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Role of CBF transcription factors during long-term acclimation to high light and low temperature in two ecotypes of Arabidopsis thaliana
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  • christopher baker,
  • Jared Stewart,
  • Cynthia Amstutz,
  • Jeffrey Johnson,
  • Lindsey Ching,
  • Krishna Niyogi,
  • William W. Adams,
  • Barbara Demmig-Adams
christopher baker
University of California Berkeley
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Jared Stewart
USDA-ARS Plains Area
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Cynthia Amstutz
University of California Berkeley
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Jeffrey Johnson
University of California Berkeley
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Lindsey Ching
University of California Berkeley
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Krishna Niyogi
University of California Berkeley
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William W. Adams
University of Colorado Boulder
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Barbara Demmig-Adams
University of Colorado Boulder
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Abstract

When grown under cool temperature, winter annuals upregulate photosynthetic capacity as well as freezing tolerance. Here, the role of three cold-induced C-repeat-Binding Factor (CBF1–3) transcription factors in photosynthetic upregulation and freezing tolerance was examined in two Arabidopsis thaliana ecotypes originating from Italy (IT) or Sweden (SW), and their corresponding CBF1–3-deficient mutant lines it:cbf123 and sw:cbf123. Photosynthetic, morphological, and freezing-tolerance phenotypes as well as gene expression profiles were characterized in plants grown from seedling stage under different combinations of light level and temperature. Under high light and cool growth temperature (HLC), a greater role of CBF1–3 in IT versus SW was evident from both phenotypic and transcriptomic data, especially with respect to photosynthetic upregulation and freezing tolerance of whole plants. Overall, features of SW were consistent with a different approach to HLC acclimation than seen in IT, and an ability of SW to reach the new homeostasis through involvement of transcriptional controls other than CBF1–3. These results provide tools and direction for further mechanistic analysis of the transcriptional control of approaches to cold acclimation suitable for either persistence through brief cold spells or for maximization of productivity in environments with continuous low temperatures.
19 Aug 2021Submitted to Plant, Cell & Environment
19 Aug 2021Submission Checks Completed
19 Aug 2021Assigned to Editor
22 Aug 2021Reviewer(s) Assigned
09 Sep 2021Review(s) Completed, Editorial Evaluation Pending
11 Sep 2021Editorial Decision: Revise Minor
07 Oct 20211st Revision Received
08 Oct 2021Assigned to Editor
08 Oct 2021Submission Checks Completed
11 Oct 2021Reviewer(s) Assigned
23 Oct 2021Review(s) Completed, Editorial Evaluation Pending
30 Oct 2021Editorial Decision: Revise Minor
02 Nov 20212nd Revision Received
02 Nov 2021Assigned to Editor
02 Nov 2021Submission Checks Completed
05 Nov 2021Review(s) Completed, Editorial Evaluation Pending
05 Nov 2021Editorial Decision: Accept