Non-Cell-Autonomous Regulation of Root Hair Patterning Genes by WRKY75 in Arabidopsis

被引：55

作者：

Rishmawi, Louai ^{[1
,2
]}

Pesch, Martina ^{[1
]}

Juengst, Christian ^{[3
]}

Schauss, Astrid C. ^{[3
]}

Schrader, Andrea ^{[1
]}

Huelskamp, Martin ^{[1
,2
]}

机构：

[1] Univ Cologne, Inst Bot, Bioctr, D-50674 Cologne, Germany

[2] Univ Cologne, Cluster Excellence Plant Sci, D-50674 Cologne, Germany

[3] Forschungszentrum, Cluster Excellence Cellular Stress Responses Agin, D-50931 Cologne, Germany

来源：

PLANT PHYSIOLOGY | 2014年 / 165卷 / 01期

关键词：

TRICHOME DEVELOPMENT; TRANSCRIPTION FACTORS; FATE SPECIFICATION; MYB GENES; EPIDERMIS; CAPRICE; DIFFERENTIATION; EXPRESSION; PROTEIN; MECHANISM;

D O I：

10.1104/pp.113.233775

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In Arabidopsis (Arabidopsis thaliana), root hairs are formed in cell files over the cleft of underlying cortex cells. This pattern is established by a well-known gene regulatory network of transcription factors. In this study, we show that WRKY75 suppresses root hair development in nonroot hair files and that it represses the expression of TRIPTYCHON and CAPRICE. The WRKY75 protein binds to the CAPRICE promoter in a yeast one-hybrid assay. Binding to the promoter fragment requires an intact WRKY protein-binding motif, the W box. A comparison of the spatial expression of WRKY75 and the localization of the WRKY75 protein revealed that WRKY75 is expressed in the pericycle and vascular tissue and that the WRKY75 RNA or protein moves into the epidermis.

引用

页码：186 / 195

页数：10

共 52 条

[1] The bHLH genes GL3 and EGL3 participate in an intercellular regulatory circuit that controls cell patterning in the Arabidopsis root epidermis [J].