AI Article Synopsis
- Auxin is a crucial molecule in plants that influences growth and development through various signaling mechanisms, including transcriptional and non-transcriptional pathways.
- AUXIN BINDING PROTEIN1 (ABP1) was thought to be a key receptor for non-transcriptional auxin responses, but recent findings indicate that its role in membrane depolarization and endocytosis is not as significant as previously believed.
- The research shows that auxin influx carrier AUX1 is responsible for plasma membrane depolarization, while the efflux carrier PIN2 helps modulate this process, revealing an important link between auxin transport and its non-transcriptional signaling effects.
Article Abstract
Auxin is a molecule, which controls many aspects of plant development through both transcriptional and non-transcriptional signaling responses. AUXIN BINDING PROTEIN1 (ABP1) is a putative receptor for rapid non-transcriptional auxin-induced changes in plasma membrane depolarization and endocytosis rates. However, the mechanism of ABP1-mediated signaling is poorly understood. Here we show that membrane depolarization and endocytosis inhibition are ABP1-independent responses and that auxin-induced plasma membrane depolarization is instead dependent on the auxin influx carrier AUX1. AUX1 was itself not involved in the regulation of endocytosis. Auxin-dependent depolarization of the plasma membrane was also modulated by the auxin efflux carrier PIN2. These data establish a new connection between auxin transport and non-transcriptional auxin signaling.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6344447 | PMC |
| http://dx.doi.org/10.3389/fpls.2018.01953 | DOI Listing |
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