Balla, Jozef; Medved'Ová, Zuzana; Kalousek, Petr; Matiješčuková, Natálie; Friml, JiríIST Austria ; Reinöhl, Vilém; Procházka, Stanislav
Apical dominance is one of the fundamental developmental phenomena in plant biology, which determines the overall architecture of aerial plant parts. Here we show apex decapitation activated competition for dominance in adjacent upper and lower axillary buds. A two-nodal-bud pea (Pisum sativum L.) was used as a model system to monitor and assess auxin flow, auxin transport channels, and dormancy and initiation status of axillary buds. Auxin flow was manipulated by lateral stem wounds or chemically by auxin efflux inhibitors 2,3,5-triiodobenzoic acid (TIBA), 1-N-naphtylphtalamic acid (NPA), or protein synthesis inhibitor cycloheximide (CHX) treatments, which served to interfere with axillary bud competition. Redirecting auxin flow to different points influenced which bud formed the outgrowing and dominant shoot. The obtained results proved that competition between upper and lower axillary buds as secondary auxin sources is based on the same auxin canalization principle that operates between the shoot apex and axillary bud. © The Author(s) 2016.
This research was carried out under the project CEITEC 2020 (LQ1601) with financial support from the Ministry of Education, Youth and Sports of the Czech Republic under the National Sustainability Programme II., supported by the project “CEITEC–Central European Institute of Technology” (CZ.1.05/1.1.00/02.0068) and the Agronomy faculty grant from Mendel University “IGA AF MENDELU” (IP 14/2013).
Balla J, Medved’Ová Z, Kalousek P, et al. Auxin flow mediated competition between axillary buds to restore apical dominance. Scientific Reports. 2016;6. doi:10.1038/srep35955
Balla, J., Medved’Ová, Z., Kalousek, P., Matiješčuková, N., Friml, J., Reinöhl, V., & Procházka, S. (2016). Auxin flow mediated competition between axillary buds to restore apical dominance. Scientific Reports, 6. https://doi.org/10.1038/srep35955
Balla, Jozef, Zuzana Medved’Ová, Petr Kalousek, Natálie Matiješčuková, Jirí Friml, Vilém Reinöhl, and Stanislav Procházka. “Auxin Flow Mediated Competition between Axillary Buds to Restore Apical Dominance.” Scientific Reports 6 (2016). https://doi.org/10.1038/srep35955.
J. Balla et al., “Auxin flow mediated competition between axillary buds to restore apical dominance,” Scientific Reports, vol. 6, 2016.
Balla J, Medved’Ová Z, Kalousek P, Matiješčuková N, Friml J, Reinöhl V, Procházka S. 2016. Auxin flow mediated competition between axillary buds to restore apical dominance. Scientific Reports. 6, 35955.
Balla, Jozef, et al. “Auxin Flow Mediated Competition between Axillary Buds to Restore Apical Dominance.” Scientific Reports, vol. 6, 35955, Nature Publishing Group, 2016, doi:10.1038/srep35955.
All files available under the following license(s):
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0):
IST-2017-745-v1+1_srep35955.pdf 1.59 MB