Secondary Growth

This project is continued in the lab of our former postdoc Dr. Laura Ragni, now a group leader at the Center for Plant Molecular Biology, Tuebingen.

Often neglected, but one of the most important growth processes in plants is secondary growth, the thickening of stem and root structures by radial expansion. We like to use the Arabidopsis hypocotyl as a model for this process, because its later phase secondary growth is reminiscent of trees and can be triggered at will via a transgenic system. Find out more about our work on secondary growth in the following publications:

Fabio Lehmann and Christian S. Hardtke (2016): Secondary growth of the Arabidopsis hypocotyl — vascular development in 4 dimensions. Current Opinion in Plant Biology, Vol. 29: pp. 9-15.

Martial Sankar, Kaisa Nieminen, Laura Ragni, Ioannis Xenarios and Christian S. Hardtke (2014): Automated quantitative histology reveals vascular morphodynamics during Arabidopsis hypocotyl secondary growth. eLife,

Laura Ragni and Christian S. Hardtke (2013): Small but thick enough – the Arabidopsis hypocotyl as a model to study secondary growth. Physiologia Plantarum, doi: 10.1111/ppl.12118.

Laura Ragni, Kaisa Nieminen, David Pacheco-Villalobos, Richard Sibout, Claus Schwechheimer and Christian S. Hardtke (2011): A direct stimulatory role of mobile gibberellin in Arabidopsis hypocotyl xylem expansion. The Plant Cell, Vol. 23: pp. 1322-1336.

Richard Sibout, Stephanie Plantegenet and Christian S. Hardtke (2008): Flowering as a condition for xylem expansion in Arabidopsis hypocotyl & root. Current Biology, Vol. 18: pp. 458-463.