1. Mazid, M., Khan, T. A. & Mohammad, F. Cytokinins, a classical multifaceted hormone in plant system. J. Stress Physiol. Biochem. 7, 347–368 (2011).
2. Wang, G., Zhang, G. & Wu, M. CLE peptide signaling and crosstalk with phytohormones and environmental stimuli. Front. Plant Sci. 6, 1211 (2016).
3. Kieber, J.J. & Schaller, G.E. Cytokinin signaling in plant development. Development 145, dev 9344 (2018).
4. Klemš et al. Changes in cytokinin levels and metabolism in tobacco (Nicotiana tabacum L.) explants during in vitro shoot organogenesis induced by trans-zeatin and dihydrozeatin. Plant Growth Regul. 65, 427–437 (2011).
5. Kamínek, M., Motyka, V. & Vaňková, R. Regulation of cytokinin content in plant cells. Physiol. Plant. 101, 689–700 (1997).