Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.7/587
Título: ZIFL1.1 transporter modulates polar auxin transport by stabilizing membrane abundance of multiple PINs inArabidopsisroot tip
Autor: Remy, Estelle
Baster, Pawel
Friml, Jiří
Duque, Paula
Palavras-chave: Arabidopsis thaliana
Major Facilitator Superfamily
PIN transporters
polar auxin transport
root development
Data: 10-Jul-2013
Editora: Taylor & Francis
Citação: Estelle Remy, Pawel Baster, Ji ř í Friml & Paula Duque (2013) ZIFL1.1 transporter modulates polar auxin transport by stabilizing membrane abundance of multiple PINs in Arabidopsis root tip, Plant Signaling & Behavior, 8:10, e25688, DOI: 10.4161/psb.25688
Resumo: Cell-to-cell directional flow of the phytohormone auxin is primarily established by polar localization of the PIN auxin transporters, a process tightly regulated at multiple levels by auxin itself. We recently reported that, in the context of strong auxin flows, activity of the vacuolar ZIFL1.1 transporter is required for fine-tuning of polar auxin transport rates in the Arabidopsis root. In particular, ZIFL1.1 function protects plasma-membrane stability of the PIN 2 carrier in epidermal root tip cells under conditions normally triggering PIN 2 degradation. Here, we show that ZIFL1.1 activity at the root tip also promotes PIN 1 plasma-membrane abundance in central cylinder cells, thus supporting the notion that ZIFL1.1 acts as a general positive modulator of polar auxin transport in roots.
Peer review: yes
URI: http://hdl.handle.net/10400.7/587
DOI: 10.4161/psb.25688
Versão do Editor: http://www.tandfonline.com/doi/full/10.4161/psb.25688
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