Regulation of Polar Auxin Transport by AtPIN1 in Arabidopsis Vascular Tissue
Leo Gälweiler,Changhui Guan,Andreas Müller,Ellen Wisman,Kurt Mendgen,Alexander Yephremov,Klaus Palme +6 more
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TLDR
The PIN-FORMED (PIN1) gene was found to encode a 67-kilodalton protein with similarity to bacterial and eukaryotic carrier proteins, and the AtPIN1 protein was detected at the basal end of auxin transport-competent cells in vascular tissue.Abstract:
Polar auxin transport controls multiple developmental processes in plants, including the formation of vascular tissue. Mutations affecting the PIN-FORMED (PIN1) gene diminish polar auxin transport in Arabidopsis thaliana inflorescence axes. The AtPIN1gene was found to encode a 67-kilodalton protein with similarity to bacterial and eukaryotic carrier proteins, and the AtPIN1 protein was detected at the basal end of auxin transport-competent cells in vascular tissue. AtPIN1 may act as a transmembrane component of the auxin efflux carrier.read more
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Local, Efflux-Dependent Auxin Gradients as a Common Module for Plant Organ Formation
Eva Benková,Marta Michniewicz,Michael Sauer,Thomas Teichmann,Daniela Seifertová,Gerd Jürgens,Jiří Friml +6 more
TL;DR: It is shown that organ formation in Arabidopsis involves dynamic gradients of the signaling molecule auxin with maxima at the primordia tips, which suggest that PIN-dependent, local auxin gradients represent a common module for formation of all plant organs, regardless of their mature morphology or developmental origin.
Journal ArticleDOI
Auxin: regulation, action, and interaction.
Andrew Woodward,Bonnie Bartel +1 more
TL;DR: Nearly six decades after the structural elucidation of IAA, many aspects of auxin metabolism, transport and signalling are well established; however, more than a few fundamental questions and innumerable details remain unresolved.
Journal ArticleDOI
The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots
Ikram Blilou,Jian Xu,Marjolein Wildwater,Viola Willemsen,Ivan A. Paponov,Jiří Friml,Renze Heidstra,Mitsuhiro Aida,Klaus Palme,Ben Scheres +9 more
TL;DR: This work shows that five PIN genes collectively control auxin distribution to regulate cell division and cell expansion in the primary root and reveals an interaction network of auxin transport facilitators and root fate determinants that control patterning and growth of the root primordium.
Journal ArticleDOI
Efflux-dependent auxin gradients establish the apical–basal axis of Arabidopsis
Jiří Friml,Anne Vieten,Michael Sauer,Dolf Weijers,Dolf Weijers,Heinz Schwarz,Thorsten Hamann,Thorsten Hamann,Remko Offringa,Gerd Jürgens +9 more
TL;DR: The results indicate how the establishment of cell polarity, polar auxin efflux and local auxin response result in apical–basal axis formation of the embryo, and thus determine the axiality of the adult plant.
Journal ArticleDOI
Regulation of phyllotaxis by polar auxin transport.
Didier Reinhardt,Eva-Rachele Pesce,Pia A. Stieger,Therese Mandel,Kurt Baltensperger,Malcolm J. Bennett,Jan Traas,Jiří Friml,Cris Kuhlemeier +8 more
TL;DR: It is shown that proteins involved in auxin transport regulate phyllotaxis, and data indicate that auxin is transported upwards into the meristem through the epidermis and the outermostMeristem cell layer.
References
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TL;DR: It is suggested that the normal level of polar transport activity in the inflorescence axes is required in early developmental stages of floral bud formation in Arabidopsis and that the primary function of the pin1 gene is auxin polar transport in the inforescence axis.