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The PLETHORA Gene Regulatory Network Guides growth and cell differentiation in Arabidopsis roots

Santuari, Luca, Sanchez-Perez, Gabino F., Luijten, Marijn, Rutjens, Bas, Terpstra, Inez, Berke, Lidija, Gorte, Maartje, Prasad, Kalika, Bao, Dongping, Timmermans-Hereijgers, Johanna L.P.M., Maeo, Kenichiro, Nakamura, Kenzo, Shimotohno, Akie, Pencik, Ales, Novak, Ondrej, Ljung, Karin, van Heesch, Sebastiaan, de Bruijn, Ewart, Cuppen, Edwin, Willemsen, Viola, Mähönen, Ari Pekka, Lukowitz, Wolfgang, Snel, Berend, de Ridder, Dick, Scheres, Ben and Heidstra, Renze 2016. The PLETHORA Gene Regulatory Network Guides growth and cell differentiation in Arabidopsis roots. The Plant Cell 28 (12) , pp. 2937-2952. 10.1105/tpc.16.00656

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Abstract

Organ formation in animals and plants relies on precise control of cell state transitions to turn stem cell daughters into fully differentiated cells. In plants, cells cannot rearrange due to shared cell walls. Thus, differentiation progression and the accompanying cell expansion must be tightly coordinated across tissues. PLETHORA (PLT) transcription factor gradients are unique in their ability to guide the progression of cell differentiation at different positions in the growing Arabidopsis thaliana root, which contrasts with well-described transcription factor gradients in animals specifying distinct cell fates within an essentially static context. To understand the output of the PLT gradient, we studied the gene set transcriptionally controlled by PLTs. Our work reveals how the PLT gradient can regulate cell state by region-specific induction of cell proliferation genes and repression of differentiation. Moreover, PLT targets include major patterning genes and autoregulatory feedback components, enforcing their role as master regulators of organ development.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: American Society of Plant Biologists
ISSN: 1040-4651
Date of First Compliant Deposit: 10 December 2018
Date of Acceptance: 30 November 2016
Last Modified: 13 May 2019 14:23
URI: http://orca.cf.ac.uk/id/eprint/117526

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