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Article

Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis

1
Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany, Czech Academy of Sciences, Rozvojova 263, 16502 Prague, Czech Republic
2
Division of Genetics and Crop Breeding, Crop Research Institute, Drnovska 507, 16100 Prague, Czech Republic
3
Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, 2462 Martonvásár, Hungary
4
Department of Molecular Biology and Radiobiology, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300 Brno, Czech Republic
5
CEITEC—Central European Institute of Technology and National Centre for Biomolecular Research, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editor: Miyako Kusano
Int. J. Mol. Sci. 2021, 22(5), 2736; https://doi.org/10.3390/ijms22052736
Received: 9 February 2021 / Revised: 24 February 2021 / Accepted: 4 March 2021 / Published: 8 March 2021
(This article belongs to the Special Issue Perception, Transduction and Crosstalk of Auxin and Cytokinin Signals)
Plant survival in temperate zones requires efficient cold acclimation, which is strongly affected by light and temperature signal crosstalk, which converge in modulation of hormonal responses. Cold under low light conditions affected Arabidopsis responses predominantly in apices, possibly because energy supplies were too limited for requirements of these meristematic tissues, despite a relatively high steady-state quantum yield. Comparing cold responses at optimal light intensity and low light, we found activation of similar defence mechanisms—apart from CBF13 and CRF34 pathways, also transient stimulation of cytokinin type-A response regulators, accompanied by fast transient increase of trans-zeatin in roots. Upregulated expression of components of strigolactone (and karrikin) signalling pathway indicated involvement of these phytohormones in cold responses. Impaired response of phyA, phyB, cry1 and cry2 mutants reflected participation of these photoreceptors in acquiring freezing tolerance (especially cryptochrome CRY1 at optimal light intensity and phytochrome PHYA at low light). Efficient cold acclimation at optimal light was associated with upregulation of trans-zeatin in leaves and roots, while at low light, cytokinin (except cis-zeatin) content remained diminished. Cold stresses induced elevation of jasmonic acid and salicylic acid (in roots). Low light at optimal conditions resulted in strong suppression of cytokinins, jasmonic and salicylic acid. View Full-Text
Keywords: auxin; combined stress; cryptochrome; cytokinin; gene expression; gibberellin; phytochrome; plant hormones auxin; combined stress; cryptochrome; cytokinin; gene expression; gibberellin; phytochrome; plant hormones
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MDPI and ACS Style

Prerostova, S.; Dobrev, P.I.; Knirsch, V.; Jarosova, J.; Gaudinova, A.; Zupkova, B.; Prášil, I.T.; Janda, T.; Brzobohatý, B.; Skalák, J.; Vankova, R. Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis. Int. J. Mol. Sci. 2021, 22, 2736. https://doi.org/10.3390/ijms22052736

AMA Style

Prerostova S, Dobrev PI, Knirsch V, Jarosova J, Gaudinova A, Zupkova B, Prášil IT, Janda T, Brzobohatý B, Skalák J, Vankova R. Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis. International Journal of Molecular Sciences. 2021; 22(5):2736. https://doi.org/10.3390/ijms22052736

Chicago/Turabian Style

Prerostova, Sylva, Petre I. Dobrev, Vojtech Knirsch, Jana Jarosova, Alena Gaudinova, Barbara Zupkova, Ilja T. Prášil, Tibor Janda, Břetislav Brzobohatý, Jan Skalák, and Radomira Vankova. 2021. "Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis" International Journal of Molecular Sciences 22, no. 5: 2736. https://doi.org/10.3390/ijms22052736

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