Hurny, AndrejIST Austria; Cuesta, CandelaIST Austria; Cavallari, NicolaIST Austria; Oetvoes, KrisztinaIST Austria; Duclercq, Jerome; Dokládal, Ladislav; Montesinos López, Juan CIST Austria; Gallemi Rovira, MarcalIST Austria; Semeradova, HanaIST Austria; Rauter, ThomasIST Austria; Stenzel, Irene; Persiau, Geert
Plants as non-mobile organisms constantly integrate varying environmental signals to flexibly adapt their growth and development. Local fluctuations in water and nutrient availability, sudden changes in temperature or other abiotic and biotic stresses can trigger changes in the growth of plant organs. Multiple mutually interconnected hormonal signaling cascades act as essential endogenous translators of these exogenous signals in the adaptive responses of plants. Although the molecular backbones of hormone transduction pathways have been identified, the mechanisms underlying their interactions are largely unknown. Here, using genome wide transcriptome profiling we identify an auxin and cytokinin cross-talk component; SYNERGISTIC ON AUXIN AND CYTOKININ 1 (SYAC1), whose expression in roots is strictly dependent on both of these hormonal pathways. We show that SYAC1 is a regulator of secretory pathway, whose enhanced activity interferes with deposition of cell wall components and can fine-tune organ growth and sensitivity to soil pathogens.
We thank Daria Siekhaus, Jiri Friml and Alexander Johnson for critical reading of the manuscript, Peter Pimpl, Christian Luschnig and Liwen Jiang for sharing published material, Lesia Rodriguez Solovey for technical assistance. This work was supported by the Austrian Science Fund (FWF01_I1774S) to A.H., K.Ö., and E.B., the German Research Foundation (DFG; He3424/6-1 to I.H.), by the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement n°  (to N.C.), by the EU in the framework of the Marie-Curie FP7 COFUND People Programme through the award of an AgreenSkills+ fellowship No. 609398 (to J.S.) and by the Scientific Service Units of IST-Austria through resources provided by the Bioimaging Facility, the Life Science Facility. The IJPB benefits from the support of Saclay Plant Sciences-SPS (ANR-17-EUR-0007).
Hurny A, Cuesta C, Cavallari N, et al. Synergistic on Auxin and Cytokinin 1 positively regulates growth and attenuates soil pathogen resistance. Nature Communications. 2020;11. doi:10.1038/s41467-020-15895-5
Hurny, A., Cuesta, C., Cavallari, N., Ötvös, K., Duclercq, J., Dokládal, L., … Benková, E. (2020). Synergistic on Auxin and Cytokinin 1 positively regulates growth and attenuates soil pathogen resistance. Nature Communications, 11. https://doi.org/10.1038/s41467-020-15895-5
Hurny, Andrej, Candela Cuesta, Nicola Cavallari, Krisztina Ötvös, Jerome Duclercq, Ladislav Dokládal, Juan C Montesinos López, et al. “Synergistic on Auxin and Cytokinin 1 Positively Regulates Growth and Attenuates Soil Pathogen Resistance.” Nature Communications 11 (2020). https://doi.org/10.1038/s41467-020-15895-5.
A. Hurny et al., “Synergistic on Auxin and Cytokinin 1 positively regulates growth and attenuates soil pathogen resistance,” Nature Communications, vol. 11, 2020.
Hurny A, Cuesta C, Cavallari N, Ötvös K, Duclercq J, Dokládal L, Montesinos López JC, Gallemi M, Semeradova H, Rauter T, Stenzel I, Persiau G, Benade F, Bhalearo R, Sýkorová E, Gorzsás A, Sechet J, Mouille G, Heilmann I, De Jaeger G, Ludwig-Müller J, Benková E. 2020. Synergistic on Auxin and Cytokinin 1 positively regulates growth and attenuates soil pathogen resistance. Nature Communications. 11.
Hurny, Andrej, et al. “Synergistic on Auxin and Cytokinin 1 Positively Regulates Growth and Attenuates Soil Pathogen Resistance.” Nature Communications, vol. 11, 2170, Springer Nature, 2020, doi:10.1038/s41467-020-15895-5.
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