To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Apical hook development from embryos orientated in root- upwards position. Plasma membrane marker PIP2-GFP used to visualise plasma membranes. Root gravity response module guides differential growth determining both root bending and apical hook formation in Arabidopsis Qiang Zhu, Marçal Gallemí, Jiří Pospíšil, Petra Žádníková, Miroslav Strnad, and Eva Benková Development 2019. 146:None-None; doi: 10.1242/dev.175919 Download Original Video