Related Experiment Video
Updated: May 6, 2026

A Method for Characterizing Embryogenesis in Arabidopsis
Published on: August 4, 2017
Tightly controlled WRKY23 expression mediates Arabidopsis embryo development
Wim Grunewald1, Ive De Smet, Bert De Rybel
11] Department of Plant Systems Biology, VIB, and Bioinformatics, Ghent University, 9052 Ghent, Belgium [2] Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium.
Plant embryo development relies on apical-basal patterning. The AtWRKY23 transcription factor is crucial for establishing root stem cell niches, influencing auxin signaling pathways for proper plant growth.
Area of Science:
- Plant developmental biology
- Molecular genetics
- Plant embryogenesis
Background:
- Apical-basal patterning is essential for plant embryo development, specifying root and shoot stem cell niches.
- The auxin-responsive AtWRKY23 transcription factor's expression pattern aligns with root stem cell niche development.
Purpose of the Study:
- To investigate the role of the AtWRKY23 transcription factor in apical-basal axis formation and root stem cell niche establishment.
- To understand the relationship between AtWRKY23 and known root stem cell specification pathways.
Main Methods:
- Gene knockdown of WRKY23 transcript levels.
- Expression of a dominant-negative WRKY23-SRDX repressor fusion protein.
- Analysis of apical-basal axis formation and root stem cell niche development.
- Investigating the interaction with SHORTROOT and MONOPTEROS-BODENLOS signaling pathways.
Main Results:
- Reduced WRKY23 levels or function impaired apical-basal axis formation and root stem cell niche installation.
- AtWRKY23 expression is regulated by SHORTROOT and MONOPTEROS-BODENLOS signaling.
- AtWRKY23 partially rescued the root formation defect in mp mutant embryos.
Conclusions:
- Tightly controlled AtWRKY23 expression is vital for regulating both auxin-dependent and independent signaling pathways in stem cell specification.
- AtWRKY23 acts as a key regulator in establishing plant embryonic patterning and stem cell niches.
Related Concept Videos
Cell Signaling in Plants
Gene Regulation During Sporulation
Regulation of Expression at Multiple Steps
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Regulation of Expression Occurs at Multiple Steps

