The article Space-time analysis of gravitropism in etiolated Arabidopsis hypocotyls using bioluminescence imaging of the IAA19 promoter fusion with a destabilized luciferase reporter, written by Kotaro T. Yamamoto, Masaaki K. Watahiki, Jun Matsuzaki, Soichirou Satoh and Hisayo Shimizu, was originally published electronically on the publisher's internet portal (currently SpringerLink) on 10 April 2017 without open access.