SYNERGISTIC ON AUXIN AND CYTOKININ 1 positively regulates growth and attenuates soil pathogen resistance

Andrej Hurný, Candela Cuesta, Nicola Cavallari, Krisztina Ötvös, Jerome Duclercq, Ladislav Dokládal, Juan Carlos Montesinos, Marçal Gallemí, Hana Semerádová, Thomas Rauter, Irene Stenzel, Geert Persiau, Freia Benade, Rishikesh Bhalearo, Eva Sýkorová, András Gorzsás, Julien Sechet, Gregory Mouille, Ingo Heilmann, Geert Jaeger, Jutta Ludwig-Müller and Eva Benková ()
Additional contact information
Andrej Hurný: Institute of Science and Technology
Candela Cuesta: Institute of Science and Technology
Nicola Cavallari: Institute of Science and Technology
Krisztina Ötvös: Institute of Science and Technology
Jerome Duclercq: Université du Picardie Jules Verne, UFR des Sciences
Ladislav Dokládal: The Czech Academy of Sciences
Juan Carlos Montesinos: Institute of Science and Technology
Marçal Gallemí: Institute of Science and Technology
Hana Semerádová: Institute of Science and Technology
Thomas Rauter: Institute of Science and Technology
Irene Stenzel: Martin-Luther-University Halle-Wittenberg
Geert Persiau: Ghent University
Freia Benade: Technische Universität Dresden
Rishikesh Bhalearo: Swedish University of Agricultural Sciences
Eva Sýkorová: The Czech Academy of Sciences
András Gorzsás: Umeå University
Julien Sechet: AgroParisTech, Université Paris-Saclay
Gregory Mouille: AgroParisTech, Université Paris-Saclay
Ingo Heilmann: Martin-Luther-University Halle-Wittenberg
Geert Jaeger: Ghent University
Jutta Ludwig-Müller: Technische Universität Dresden
Eva Benková: Institute of Science and Technology

Nature Communications, 2020, vol. 11, issue 1, 1-17

Abstract: Abstract 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.

Date: 2020
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DOI: 10.1038/s41467-020-15895-5

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