Rapid auxin signaling: An ancient and conserved response in plants

Abstract

<p>Rapid auxin responses in plants are crucial in initiating cellular changes. These responses are involved in processes such as plasma membrane depolarization, cytoplasmic streaming, apoplastic pH changes, calcium influx, etc. Recent studies illustrated how auxin triggers rapid changes in protein phosphorylation in different species through both the ABP-TMK auxin perception at the cell surface and a conserved RAF-like kinase-based mechanism. These works uncovered an ancient system for rapid responses to the auxin signaling molecule, shedding light on its profound impact on various cellular pathways and functions.</p>