Reference - Detail
| RRC ID | 86851 |
|---|---|
| Author | Oochi A, Hajny J, Fukui K, Nakao Y, Gallei M, Quareshy M, Takahashi K, Kinoshita T, Harborough SR, Kepinski S, Kasahara H, Napier R, Friml J, Hayashi KI. |
| Title | Pinstatic Acid Promotes Auxin Transport by Inhibiting PIN Internalization. |
| Journal | Plant Physiol |
| Abstract |
Polar auxin transport plays a pivotal role in plant growth and development. PIN-FORMED (PIN) auxin efflux carriers regulate directional auxin movement by establishing local auxin maxima, minima, and gradients that drive multiple developmental processes and responses to environmental signals. Auxin has been proposed to modulate its own transport by regulating subcellular PIN trafficking via processes such as clathrin-mediated PIN endocytosis and constitutive recycling. Here, we further investigated the mechanisms by which auxin affects PIN trafficking by screening auxin analogs and identified pinstatic acid (PISA) as a positive modulator of polar auxin transport in Arabidopsis (Arabidopsis thaliana). PISA had an auxin-like effect on hypocotyl elongation and adventitious root formation via positive regulation of auxin transport. PISA did not activate SCFTIR1/AFB signaling and yet induced PIN accumulation at the cell surface by inhibiting PIN internalization from the plasma membrane. This work demonstrates PISA to be a promising chemical tool to dissect the regulatory mechanisms behind subcellular PIN trafficking and auxin transport. |
| Volume | 180(2) |
| Pages | 1152-1165 |
| Published | 2019-6-1 |
| DOI | 10.1104/pp.19.00201 |
| PII | pp.19.00201 |
| PMID | 30936248 |
| PMC | PMC6548234 |
| MeSH | Arabidopsis / drug effects Arabidopsis / metabolism* Arabidopsis Proteins / metabolism* Biological Transport / drug effects Cell Membrane / drug effects Cell Membrane / metabolism Endocytosis* / drug effects Gravitropism / drug effects Hypocotyl / drug effects Hypocotyl / growth & development Indoleacetic Acids / metabolism* Phenotype Phenylacetates / pharmacology* Plant Roots / drug effects Plant Roots / growth & development Plant Shoots / metabolism Signal Transduction |
| IF | 6.902 |
| Resource | |
| Arabidopsis / Cultured plant cells, genes | rpc00001 |