Coordinated Polar Localization of Auxin Efflux Carrier PIN1 by GNOM ARF GEF-Reference-Cited by-同舟云学术

Coordinated Polar Localization of Auxin Efflux Carrier PIN1 by GNOM ARF GEF

Published:1999-10-08 Issue:5438 Volume:286 Page:316-318
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Steinmann Thomas¹,Geldner Niko¹,Grebe Markus¹,Mangold Stefan¹,Jackson Catherine L.²,Paris Sonia³,Gälweiler Leo⁴,Palme Klaus⁴,Jürgens Gerd¹

Affiliation:

1. Entwicklungsgenetik, Zentrum für Molekularbiologie der Pflanzen, Universität Tübingen, Auf der Morgenstelle 1, D-72076 Tübingen, Germany.

2. Service de Biochimie et Génétique Moléculaire, Commissariat à l'Energie Atemique/Saclay, F-91191 Gif-sur-Yvette, France.

3. Institut de Pharmacologie Moléculaire et Cellulaire du Centre National de la Recherche Scientifique, Sophia Antipolis, F-06560 Valbonne, France.

4. Max-Delbrück-Laboratorium in der Max-Planck-Gesellschaft, D-50829 Köln, Germany.

Abstract

The plant hormone auxin is transported in a polar manner along the shoot-root axis, which requires efflux carriers such as PIN1. Asymmetric localization of PIN1 develops from a random distribution in Arabidopsis early embryogenesis. Coordinated polar localization of PIN1 is defective in gnom embryos. GNOM is a membrane-associated guanine-nucleotide exchange factor on ADP-ribosylation factor G protein (ARF GEF). Thus, GNOM-dependent vesicle trafficking may establish cell polarity, resulting in polar auxin transport.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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