Cyclic programmed cell death stimulates hormone signaling and root development in Arabidopsis

Xuan, Wei and Band, Leah R. and Kumpf, Robert P. and Van Damme, Daniel and Parizot, Boris and De Rop, Gieljan and Opdenacker, Davy and Moller, Barbara K. and Skorzinski, Noemi and Njo, Maria and De Rybel, Bert and Audenaert, Dominique and Nowack, Moritz K. and Vanneste, Steffen and Beeckman, Tom (2016) Cyclic programmed cell death stimulates hormone signaling and root development in Arabidopsis. Science, 351 (6271). pp. 384-387. ISSN 1095-9203

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (711kB) | Preview

Abstract

The plant root cap, surrounding the very tip of the growing root, perceives and transmits environmental signals to the inner root tissues. In Arabidopsis thaliana, auxin released by the root cap contributes to the regular spacing of lateral organs along the primary root axis. Here, we show that the periodicity of lateral organ induction is driven by recurrent programmed cell death at the most distal edge of the root cap. We suggest that synchronous bursts of cell death in lateral root cap cells release pulses of auxin to surrounding root tissues, establishing the pattern for lateral root formation. The dynamics of root cap turnover may therefore coordinate primary root growth with root branching in order to optimize the uptake of water and nutrients from the soil.

Item Type: Article
Additional Information: This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science Journal Cyclic programmed cell death stimulates hormone signaling and root development in Arabidopsis, 351, 2016, doi:10.1126/science.aad2776
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Biosciences
Identification Number: 10.1126/science.aad2776
Depositing User: Eprints, Support
Date Deposited: 29 Jun 2017 12:52
Last Modified: 30 Jun 2017 02:25
URI: http://eprints.nottingham.ac.uk/id/eprint/43879

Actions (Archive Staff Only)

Edit View Edit View