scholarly journals Molecular Basis for a Cell Fate Switch in Response to Impaired Ribosome Biogenesis in the Arabidopsis Root Epidermis

2020 ◽  
Vol 32 (7) ◽  
pp. 2402-2423
Author(s):  
Wenjia Wang ◽  
Kook Hui Ryu ◽  
Angela Bruex ◽  
Christa Barron ◽  
John Schiefelbein
Keyword(s):  
Cell Fate ◽  
Molecular Basis ◽  
Ribosome Biogenesis ◽  
Arabidopsis Root ◽  
Root Epidermis ◽  
A Cell

scholarly journals HDA18 Affects Cell Fate in Arabidopsis Root Epidermis via Histone Acetylation at Four Kinase Genes

2013 ◽  
Vol 25 (1) ◽  
pp. 257-269 ◽  
Author(s):  
Cui Liu ◽  
Lin-Chen Li ◽  
Wen-Qian Chen ◽  
Xian Chen ◽  
Zhi-Hong Xu ◽  
...  
Keyword(s):  
Histone Acetylation ◽  
Cell Fate ◽  
Arabidopsis Root ◽  
Root Epidermis

scholarly journals Cell Fate in the Arabidopsis Root Epidermis Is Determined by Competition between WEREWOLF and CAPRICE

2011 ◽  
Vol 157 (3) ◽  
pp. 1196-1208 ◽  
Author(s):  
Sang-Kee Song ◽  
Kook Hui Ryu ◽  
Yeon Hee Kang ◽  
Jae Hyo Song ◽  
Young-Hee Cho ◽  
...  
Keyword(s):  
Cell Fate ◽  
Arabidopsis Root ◽  
Root Epidermis

scholarly journals A novel regulatory circuit specifies cell fate in the Arabidopsis root epidermis

2006 ◽  
Vol 0 (0) ◽  
pp. 060127022051002-??? ◽  
Author(s):  
John Schiefelbein ◽  
Myeong Min Lee
Keyword(s):  
Cell Fate ◽  
Arabidopsis Root ◽  
Root Epidermis ◽  
Regulatory Circuit

scholarly journals A cell surface arabinogalactan-peptide influences root hair cell fate

2019 ◽  
Author(s):  
Cecilia Borassi ◽  
Javier Gloazzo Dorosz ◽  
Martiniano M. Ricardi ◽  
Laercio Pol Fachin ◽  
Mariana Carignani Sardoy ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Cell Surface ◽  
Cell Fate ◽  
Root Hair ◽  
Root Hairs ◽  
Epidermal Cells ◽  
Root Epidermis ◽  
A Cell ◽  
Epidermis Cell

SummaryRoot hairs (RHs) develop from specialized epidermal cells called trichoblasts, whereas epidermal cells that lack RHs are known as atrichoblasts. The mechanism controlling root epidermal cell fate is only partially understood. Root epidermis cell fate is regulated by a transcription factor complex that promotes the expression of the homeodomain protein GLABRA 2 (GL2), which blocks RH development by inhibiting ROOT HAIR DEFECTIVE 6 (RHD6). Suppression of GL2 expression activates RHD6, a series of downstream TFs including ROOT HAIR DEFECTIVE 6 LIKE-4 (RSL4 [Yi et al. 2010]) and their target genes, and causes epidermal cells to develop into RHs. Brassinosteroids (BRs) influence root epidermis cell fate. In the absence of BRs, phosphorylated BIN2 (a Type-II GSK3-like kinase) inhibits a protein complex that directly downregulates GL2 [Chen et al. 2014]. Here, we show that the genetic and pharmacological perturbation of the arabinogalactan peptide (AG) AGP21 in Arabidopsis thaliana, triggers aberrant RH development, similar to that observed in plants with defective BR signaling. We reveal that an O-glycosylated AGP21 peptide, which is positively regulated by BZR1, a transcription factor activated by BR signaling, affects RH cell fate by altering GL2 expression in a BIN2-dependent manner. These results suggest that perturbation of a cell surface AGP disrupts BR responses and inhibits the downstream effect of BIN2 on the RH repressor GL2 in root epidermal cells. In addition, AGP21 also acts in a BR-independent, AGP-dependent mode that together with BIN2 signalling cascade controls RH cell fate.SignificanceIn the plant Arabidopsis thaliana, the root epidermis forms in an alternating pattern atrichoblasts with trichoblast cells that end up developing root hairs (RHs). Atrichoblast cell fate is directly promoted by the transcription factor GLABRA2 (GL2) while the lack of GL2 allows RH formation. The loss of AGP21 peptide triggers an abnormal RH cell fate in two contiguous cells in a similar manner as brassinosteroid (BRs) mutants. In the absence of BR signaling, BIN2 (a GSK3 like-kinase) in a phosphorylated state, downregulate GL2 expression to trigger RH cell fate. The absence of AGP21 is able to repress GL2 expression and activates the expression of RSL4 and EXP7 root hair proteins.

scholarly journals The MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root Epidermis

2009 ◽  
Vol 21 (4) ◽  
pp. 1080-1094 ◽  
Author(s):  
Yeon Hee Kang ◽  
Victor Kirik ◽  
Martin Hulskamp ◽  
Kyoung Hee Nam ◽  
Katherine Hagely ◽  
...  
Keyword(s):  
Cell Fate ◽  
Positive Feedback ◽  
Feedback Loop ◽  
Cell Fate Specification ◽  
Positive Feedback Loop ◽  
Arabidopsis Root ◽  
Fate Specification ◽  
Root Epidermis

scholarly journals Histone deacetylase HDA19 affects cortical cell fate by interacting with SCARECROW in the Arabidopsis root

2018 ◽  
Author(s):  
WQ Chen ◽  
C Drapek ◽  
DX Li ◽  
ZH Xu ◽  
PN Benfey ◽  
...  
Keyword(s):  
Simple Model ◽  
Cell Fate ◽  
Histone Deacetylases ◽  
Regulatory Networks ◽  
Cortical Cell ◽  
Cell Fate Specification ◽  
Cell Specification ◽  
Arabidopsis Root ◽  
Fate Specification ◽  
Root Epidermis

Abstract/SummaryThe Arabidopsis root epidermis is a simple model for investigating cell fate specification and pattern formation. In addition to regulatory networks consisting of transcription factors, histone deacetylases are also involved in the cellular patterning process. Here we report HDA19 affects the root epidermal cellular pattern through regulation of cortical cell fate by interacting with SCARECROW. This work reveals two new components in cortical cell specification and uncovers a new facet of SCR function.

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