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

Xuan, Wei; Band, Leah R.; Kumpf, Robert P.; Van Damme, Daniel; Parizot, Boris; De Rop, Gieljan; Opdenacker, Davy; Moller, Barbara K.; Skorzinski, Noemi; Njo, Maria; De Rybel, Bert; Audenaert, Dominique; Nowack, Moritz K.; Vanneste, Steffen; Beeckman, Tom

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Authors

Wei Xuan

Leah R. Band

Robert P. Kumpf

Daniel Van Damme

Boris Parizot

Gieljan De Rop

Davy Opdenacker

Barbara K. Moller

Noemi Skorzinski

Maria Njo

Bert De Rybel

Dominique Audenaert

Moritz K. Nowack

Steffen Vanneste

Tom Beeckman



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.

Citation

Xuan, W., Band, L. R., Kumpf, R. P., Van Damme, D., Parizot, B., De Rop, G., …Beeckman, T. (2016). Cyclic programmed cell death stimulates hormone signaling and root development in Arabidopsis. Science, 351(6271), 384-387. https://doi.org/10.1126/science.aad2776

Journal Article Type Article
Acceptance Date Dec 11, 2015
Publication Date Jan 22, 2016
Deposit Date Jun 29, 2017
Publicly Available Date Jun 29, 2017
Journal Science
Print ISSN 0036-8075
Electronic ISSN 1095-9203
Publisher American Association for the Advancement of Science
Peer Reviewed Peer Reviewed
Volume 351
Issue 6271
Pages 384-387
DOI https://doi.org/10.1126/science.aad2776
Public URL https://nottingham-repository.worktribe.com/output/771906
Publisher URL https://doi.org/10.1126/science.aad2776
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
Contract Date Jun 29, 2017

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