Related Experiment Video
Updated: Jun 7, 2026

Identification of the Genes Involved in Stomatal Development via Epidermal Phenotype Scoring
Published on: January 20, 2023
RALFs: peptide regulators of plant growth
Patricia A Bedinger1, Gregory Pearce, Paul A Covey
1Department of Biology, Colorado State University, Fort Collins, CO, USA. Bedinger@colostate.edu
Abstract:
Peptide signaling regulates a variety of developmental processes and environmental responses in plants. For example, the peptide systemin induces the systemic defense response in tomato and defensins are small cysteine-rich proteins that are involved in the innate immune system of plants. The CLAVATA3 peptide regulates meristem size and the SCR peptide is the pollen self-incompatibility recognition factor in the Brassicaceae. LURE peptides produced by synergid cells attract pollen tubes to the embryo sac. RALFs are a recently discovered family of plant peptides that play a role in plant cell growth.
Related Concept Videos
Cell Signaling in Plants
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
Plant Hormones
Plant Hormones
Short-distance Transport of Resources
Riboswitches
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...

