Touch induces ATP release in Arabidopsis roots that is modulated by the heterotrimeric G‐protein complex
Year: 2009
Type: article
Abstract: Amongst the many stimuli orienting the growth of plant roots, of critical importance are the touch signals generated as roots explore the mechanically complex soil environment. However, the molecular mechanisms behind these sensory events remain poorly defined. We report an impaired obstacle-avoiding response of roots in Arabidopsis lacking a heterotrimeric G-protein. Obstacle avoidance may utilize a touch-induced release of ATP to the extracellular space. While sequential touch stimulation revealed a strong refractory period for ATP release in response to mechano-stimulation in wild-type plants, the refractory period in mutants was attenuated, resulting in extracellular ATP accumulation. We propose that ATP acts as an extracellular signal released by mechano-stimulation and that the G-protein complex is needed for fine-tuning this response.
Source: FEBS Letters
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: bronze
Awards: Computer Integrated Systems for Microscopy and Manipulation (CISMM), G1279874337, From Plasma Membrane to Organelle: Novel Sugar Signaling through the Arabidopsis Heterotrimeric G Protein Complex, G1494410195, G222768804, Cellular Mechanisms of Mechanotransduction in Arabidopsis, G2973901274, SUGAR SENSING IN ARABIDOPSIS VIA ATRGS1, Decoding the phosphorylation bar code in Arabidopsis G Biased Signaling, 2010/AFGN Collaborative Project: The Heterotrimeric G-Protein Interactome, G6965563295
OpenAlex ID: W2150022687