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The transcriptomic landscape of the photoperiodic stress response in Arabidopsis thaliana resembles the response to pathogen infection

View ORCID ProfileAnne Cortleven, View ORCID ProfileVenja M. Roeber, View ORCID ProfileManuel Frank, View ORCID ProfileJonas Bertels, View ORCID ProfileVivien Lortzing, Gerrit Beemster, View ORCID ProfileThomas Schmülling
doi: https://doi.org/10.1101/2021.04.13.439491
Anne Cortleven
1Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Albrecht-Thaer-Weg 6, D-14195 Berlin, Germany
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  • For correspondence: anne.cortleven@fu-berlin.de
Venja M. Roeber
1Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Albrecht-Thaer-Weg 6, D-14195 Berlin, Germany
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Manuel Frank
1Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Albrecht-Thaer-Weg 6, D-14195 Berlin, Germany
3Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10, DK-8000 Aarhus C, Denmark
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Jonas Bertels
2Laboratory for Integrated Molecular Plant Physiology, Department of Biology, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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Vivien Lortzing
4Institute of Biology/Applied Zoology – Animal Ecology, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Haderslebener Straße 9, D-12163 Berlin, Germany
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Gerrit Beemster
2Laboratory for Integrated Molecular Plant Physiology, Department of Biology, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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Thomas Schmülling
1Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences (DCPS), Freie Universität Berlin, Albrecht-Thaer-Weg 6, D-14195 Berlin, Germany
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ABSTRACT

Plants are exposed to regular diurnal rhythms of light and dark. Changes in the photoperiod by the prolongation of the light period cause photoperiod stress in short day-adapted Arabidopsis thaliana. Here we report on the transcriptional response to photoperiod stress of wild-type A. thaliana and photoperiod stress-sensitive cytokinin signalling and clock mutants. Transcriptomic changes induced by photoperiod stress included numerous changes in reactive oxygen (ROS)-related transcripts and showed a strong overlap with changes occurring in response to ozone stress and pathogen attack, which have in common the induction of an apoplastic oxidative burst. A core set of photoperiod stress-responsive genes has been identified, including salicylic acid (SA) biosynthesis and signalling genes. Genetic analysis revealed a central role for NPR1 in the photoperiod stress response as npr1-1 mutants were stress-insensitive. Photoperiod stress treatment led to a strong increase in camalexin levels which is consistent with shared photoperiod stress and pathogen response pathways. Photoperiod stress induced resistance of Arabidopsis plants to a subsequent infection by Pseudomonas syringae cv. tomato DC3000 indicating priming of the defence response. Together, photoperiod stress causes transcriptional reprogramming resembling plant pathogen defence responses and induces systemic acquired resistance in the absence of a pathogen.

One sentence summary Photoperiod stress results in significant dynamic transcriptomic changes related to oxidative stress similar to those caused by pathogen attack and primes the defence response against a subsequent pathogen infection.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • Footnotes: A.C. and T.S. developed and coordinated the project; A.C., M.F., V.R. and V.L. performed experiments; A.C., M.F., V.R., V.L. and T.S. analyzed data; A.C., J.B. and G.B. performed statistical analysis of the RNA-seq data; A.C. and T.S. wrote the article with contributions of all other authors.

  • Funding: This project was funded by grants of Deutsche Forschungsgemeinschaft to T.S. (Sfb 973 and Schm 814/27-1).

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted April 14, 2021.
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The transcriptomic landscape of the photoperiodic stress response in Arabidopsis thaliana resembles the response to pathogen infection
Anne Cortleven, Venja M. Roeber, Manuel Frank, Jonas Bertels, Vivien Lortzing, Gerrit Beemster, Thomas Schmülling
bioRxiv 2021.04.13.439491; doi: https://doi.org/10.1101/2021.04.13.439491
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The transcriptomic landscape of the photoperiodic stress response in Arabidopsis thaliana resembles the response to pathogen infection
Anne Cortleven, Venja M. Roeber, Manuel Frank, Jonas Bertels, Vivien Lortzing, Gerrit Beemster, Thomas Schmülling
bioRxiv 2021.04.13.439491; doi: https://doi.org/10.1101/2021.04.13.439491

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