A basic helix-loop-helix transcription factor controls cell growth and size in root hairs.

Journal article

Postmitotic cell growth defines cell shape and size during development. However, the mechanisms regulating postmitotic cell growth in plants remain unknown. Here we report the discovery of a basic helix-loop-helix (bHLH) transcription factor called RSL4 (ROOT HAIR DEFECTIVE 6-LIKE 4) that is sufficient to promote postmitotic cell growth in Arabidopsis thaliana root-hair cells. Loss of RSL4 function resulted in the development of very short root hairs. In contrast, constitutive RSL4 expression...

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Authors: Yi, K; Menand, B; Bell, E; Dolan, L

• Publication status: Published
• Journal: Nature genetics
• Volume: 42
• Issue: 3
• Pages: 264-267
• Publication date: 2010-03-01
• DOI: 10.1038/ng.529
• EISSN: 1546-1718
• ISSN: 1061-4036
• Language: English
• Keywords: Cell Size; Plant Roots; Basic Helix-Loop-Helix Transcription Factors; Gene Expression Regulation, Plant; Arabidopsis; Gene Expression Regulation, Developmental; Plants, Genetically Modified; Plant Growth Regulators; Cell Proliferation; Cycloheximide; Dexamethasone; Protein Synthesis Inhibitors; Arabidopsis Proteins; Indoleacetic Acids