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PLETHORA proteins as dose-dependent master regulators of Arabidopsis root development

Author

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  • Carla Galinha

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
    Present address: Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK.)

  • Hugo Hofhuis

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

  • Marijn Luijten

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

  • Viola Willemsen

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

  • Ikram Blilou

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

  • Renze Heidstra

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

  • Ben Scheres

    (Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands)

Abstract

A PLETHORA of gradients Polar auxin transport is a factor in almost all developmental processes in plants but there is still much to be learned about how it operates. In cells, directional auxin transport is controlled by the PIN protein carrier complex. A new computational model has been developed to describe diffusion and PIN-facilitated auxin transport in and across the cells of the root system. The model addresses two major issues in plant development. First it supports the concept of an auxin maximum and gradient to guide root growth. Second, it shows how a single molecule can generate a field of information: a concentration gradient across the organ growth zone is closely associated with auxin maxima. A related paper shows that four PLETHORA genes are vital for root development and are candidate output factors for the auxin gradient.

Suggested Citation

  • Carla Galinha & Hugo Hofhuis & Marijn Luijten & Viola Willemsen & Ikram Blilou & Renze Heidstra & Ben Scheres, 2007. "PLETHORA proteins as dose-dependent master regulators of Arabidopsis root development," Nature, Nature, vol. 449(7165), pages 1053-1057, October.
    • Handle: RePEc:nat:nature:v:449:y:2007:i:7165:d:10.1038_nature06206
    DOI: 10.1038/nature06206
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    Cited by:

    1. Sabri Braha & Petrit Rama & Agim Zajmi, 2020. "Determining the Rooting Ability of Hardwood Cuttings of Blueberry (Vaccinium corymbosum L.) cv. ‘Bluecrop’ Stored in Refrigerating Conditions," Journal of Agricultural Studies, Macrothink Institute, vol. 8(3), pages 81-89, September.
    2. Gilad Gabay & Hanchao Wang & Junli Zhang & Jorge I. Moriconi & German F. Burguener & Leonardo D. Gualano & Tyson Howell & Adam Lukaszewski & Brian Staskawicz & Myeong-Je Cho & Jaclyn Tanaka & Tzion Fa, 2023. "Dosage differences in 12-OXOPHYTODIENOATE REDUCTASE genes modulate wheat root growth," Nature Communications, Nature, vol. 14(1), pages 1-15, December.

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