Journal Article10.1146/ANNUREV.ARPLANT.58.032806.103805
Auxin: The Looping Star in Plant Development
René Benjamins,Ben Scheres +1 more
601
TL;DR: This review focuses on the feedback loops that form an integrative part of these regulatory mechanisms in the phytohormone auxin and their role in plant growth and development.
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Abstract: The phytohormone auxin is a key factor in plant growth and development. Forward and reverse genetic strategies have identified important molecular components in auxin perception, signaling, and transport. These advances resulted in the identification of some of the underlying regulatory mechanisms as well as the emergence of functional frameworks for auxin action. This review focuses on the feedback loops that form an integrative part of these regulatory mechanisms.
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Citations
The far side of auxin signaling: fundamental cellular activities and their contribution to a defined growth response in plants
TL;DR: Results obtained from the analysis of auxin do not fit coherently into a picture of highly specific signaling events, but rather suggest mutual interactions between auxin and fundamental cellular pathways, like the control of intracellular protein sorting or translation.
Suppression of the auxin response pathway enhances susceptibility to Phytophthora cinnamomi while phosphite-mediated resistance stimulates the auxin signalling pathway
Leila Eshraghi,Jonathan P. Anderson,Jonathan P. Anderson,Nader Aryamanesh,Jen A. McComb,B.L. Shearer,B.L. Shearer,Giles St. J. Hardy +7 more
TL;DR: The auxin response pathway, particularly auxin sensitivity and transport, plays an important role in resistance to P. cinnamomi in Arabidopsis, and phosphite-mediated resistance may in some part be through its effect on the stimulation of the PSR and Auxin response pathways.
Effects of the TIBA and MH Antiauxins on In vitro Regeneration of Caspian honey locust
Mojtaba Imani Rastab,Mohamad Hosseininasr,R.R. Alí,Mostafa Khoshhal Sarmast +3 more
- 22 Sep 2023
TL;DR: The application of TIBA and MH antiauxins in the concentration of 10 μM resulted in the best callus induction and shoot proliferation efficiency in Caspian honey locust root explants.
Plasma Membrane Domain Patterning and Self-Reinforcing Polarity in Arabidopsis
Petra Marhava,Ana Cecilia Aliaga Fandino,Samuel W.H. Koh,Adriana Jelínková,Martina Kolb,Dorina P. Janacek,Alice S. Breda,Pietro Cattaneo,Ulrich Z. Hammes,Jan Petrášek,Christian S. Hardtke +10 more
TL;DR: The data suggest that the BRX-PAX module recruits PIP5Ks to reinforce PAX polarity and thereby the polarity of all three proteins, which is required to maintain a local PIN minimum.
•Dissertation
Self-organisation of auxin transport in plant cells
Arno Steinacher
- 01 Jul 2011
TL;DR: A feedback by which auxin influences its own transport by the activation of plasma membrane-bound proton pumps is described, and is shown to lead to increased allocation of auxin in cells as well as to enhancement of all auxin transport fluxes over the membrane, and in due course to the establishment of canalisation-type polarisation patterns, without polarised transporter localisation.
References
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.
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The F-box protein TIR1 is an auxin receptor
TL;DR: TIR1 is an auxin receptor that mediates Aux/IAA degradation and auxin-regulated transcription and the loss of TIR1 and three related F-box proteins eliminates saturable auxin binding in plant extracts.
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Aux/IAA proteins repress expression of reporter genes containing natural and highly active synthetic auxin response elements.
TL;DR: Cotransfection experiments with natural and synthetic AuxRE reporter genes and effector genes encoding Aux/IAA proteins showed that overexpression of Aux/ IAA proteins in carrot protoplasts resulted in specific repression of TGTCTC Auxre reporter gene expression.
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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.
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.
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