Arabidopsis WAT1 is a vacuolar auxin transport facilitator required for auxin homoeostasisReportar como inadecuado




Arabidopsis WAT1 is a vacuolar auxin transport facilitator required for auxin homoeostasis - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

(2013)NATURE COMMUNICATIONS.4. Mark abstract The plant hormone auxin (indole-3-acetic acid, IAA) has a crucial role in plant development. Its spatiotemporal distribution is controlled by a combination of biosynthetic, metabolic and transport mechanisms. Four families of auxin transporters have been identified that mediate transport across the plasma or endoplasmic reticulum membrane. Here we report the discovery and the functional characterization of the first vacuolar auxin transporter. We demonstrate that WALLS ARE THIN1 (WAT1), a plant-specific protein that dictates secondary cell wall thickness of wood fibres, facilitates auxin export from isolated Arabidopsis vacuoles in yeast and in Xenopus oocytes. We unambiguously identify IAA and related metabolites in isolated Arabidopsis vacuoles, suggesting a key role for the vacuole in intracellular auxin homoeostasis. Moreover, local auxin application onto wat1 mutant stems restores fibre cell wall thickness. Our study provides new insight into the complexity of auxin transport in plants and a means to dissect auxin function during fibre differentiation.

Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-4206503



Autor: Philippe Ranocha, Oana Dima, Réka Nagy, Judith Felten, Claire Corratgé-Faillie, Ondřej Novák, Kris Morreel , Benoît Lacombe,

Fuente: https://biblio.ugent.be/publication/4206503



DESCARGAR PDF




Documentos relacionados