RSL4-regulated transcription and ROP signaling coordinate root hair growth via BOUNDARY OF ROP DOMAIN proteins - PubMed
6 hours ago
- #Root Hair Growth
- #RSL4 Transcription
- #ROP Signaling
- RSL4 regulates root hair-specific gene expression, and ROP GTPases direct polar growth in root hairs.
- BDR6/7 proteins are identified as positive regulators for root hair initiation and growth, localized to both plasma membrane and nucleus.
- Genetic studies show interdependence: ROP signaling is essential for BDR6/7-promoted growth, and BDR6/7 are required for ROP2-driven growth.
- BDR6/7 associate with RSL2/4 in nuclei, enhancing RSL4 activity and promoter binding, while RSL4 binds BDR6/7 promoters, creating a positive feedback loop.
- The tripartite module of BDR6/7, RSL2/4 transcription, and ROP signaling coordinates spatiotemporal morphogenesis in root hair growth.