The Arabidopsis GRAS-type SCL28 transcription factor controls the mitotic cell cycle and division plane orientation.
Gene expression is reconfigured rapidly during the cell cycle to execute the cellular functions specific to each phase. Studies conducted with synchronized plant cell suspension cultures have identified hundreds of genes with periodic expression patterns across the phases of the cell cycle, but these results may differ from expression occurring in the context of intact organs. Here, we describe the use of fluorescence-activated cell sorting to analyze the gene expression profile of G2/M cells in the growing root. To this end, we isolated cells expressing the early mitosis cell cycle marker CYCLINB1;1-GFP from Arabidopsis root tips. Transcriptome analysis of these cells allowed identification of hundreds of genes whose expression is reduced or enriched in G2/M cells, including many not previously reported from cell suspension cultures. From this dataset, we identified SCL28, a transcription factor belonging to the GRAS family, whose messenger RNA accumulates to the highest levels in G2/M and is regulated by MYB3R transcription factors. Functional analysis indicates that SCL28 promotes progression through G2/M and modulates the selection of cell division planes.
Altmetric Attention Stats
Dimensions Citation Stats
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Transcriptome
- Transcription Factors
- Organogenesis
- Mitosis
- Meristem
- Genome, Plant
- Gene Expression Regulation, Plant
- Gene Expression Profiling
- Arabidopsis Proteins
- Arabidopsis
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Transcriptome
- Transcription Factors
- Organogenesis
- Mitosis
- Meristem
- Genome, Plant
- Gene Expression Regulation, Plant
- Gene Expression Profiling
- Arabidopsis Proteins
- Arabidopsis