puc-header

Pluripotent Pericycle Cells Trigger Different Growth Outputs by Integrating Developmental Cues into Distinct Regulatory Modules

40 Pages Posted: 3 Jun 2020 Publication Status: Published

See all articles by Wei Xiao

Wei Xiao

University of Tuebingen - Center for Plant Molecular Biology

David Molina

University of Tuebingen - Center for Plant Molecular Biology

Anna Wunderling

University of Tuebingen - Center for Plant Molecular Biology

Dagmar Ripper

University of Tuebingen - Center for Plant Molecular Biology

Joop Vermeer

University of Neuchatel - Institute of Biology

Laura Ragni

University of Tuebingen - Center for Plant Molecular Biology

More...

Abstract

During post-embryonic development, the pericycle specifies the stem cells that give rise to both lateral roots (LRs) and periderm, the suberized barrier that protects the plant against biotic and abiotic stresses. Comparable auxin-mediated signaling hubs regulate meristem establishment in many developmental contexts, however it is unknown how specific outputs are achieved. Using the Arabidopsis root as a model, we show that while LR formation is the preset auxin-induced program, plants with age become competent to form a periderm in response to auxin. The establishment of the vascular cambium acts as the developmental switch required to trigger auxin-mediated periderm initiation. Moreover, distinct auxin signaling components and targets control LR versus periderm formation. Among the periderm specific promoting transcription factors, WUSCHEL-RELATED HOMEOBOX 4 (WOX4) and KNAT1/ BREVIPEDICELLUS (BP) stand out as their specific overexpression in the periderm results in an increased number of periderm layers, a trait of agronomical importance in breeding programs targeting stress tolerance. Altogether these findings reveal that specificity in pericycle stem cell fate is achieved by the integration of developmental cues into distinct regulatory modules.

Keywords: pericycle, periderm, lateral rootauxin cork, phellogendevelopmental transition

Suggested Citation

Xiao, Wei and Molina, David and Wunderling, Anna and Ripper, Dagmar and Vermeer, Joop and Ragni, Laura, Pluripotent Pericycle Cells Trigger Different Growth Outputs by Integrating Developmental Cues into Distinct Regulatory Modules. Available at SSRN: https://ssrn.com/abstract=3600560 or http://dx.doi.org/10.2139/ssrn.3600560
This version of the paper has not been formally peer reviewed.

Wei Xiao

University of Tuebingen - Center for Plant Molecular Biology

Wilhelmstr. 19
72074 Tuebingen, Baden Wuerttemberg
Germany

David Molina

University of Tuebingen - Center for Plant Molecular Biology ( email )

Wilhelmstr. 19
72074 Tuebingen, Baden Wuerttemberg
Germany

Anna Wunderling

University of Tuebingen - Center for Plant Molecular Biology ( email )

Wilhelmstr. 19
72074 Tuebingen, Baden Wuerttemberg
Germany

Dagmar Ripper

University of Tuebingen - Center for Plant Molecular Biology ( email )

Wilhelmstr. 19
72074 Tuebingen, Baden Wuerttemberg
Germany

Joop Vermeer

University of Neuchatel - Institute of Biology ( email )

rue Emile-Argand 11
2000 Neuchâtel
Switzerland

Laura Ragni (Contact Author)

University of Tuebingen - Center for Plant Molecular Biology ( email )

Wilhelmstr. 19
72074 Tuebingen, Baden Wuerttemberg
Germany

Click here to go to Cell.com

Paper statistics

Downloads
14
Abstract Views
500
PlumX Metrics