Biologia plantarum 2014, 58:778-782 | DOI: 10.1007/s10535-014-0446-1

The localization of auxin transporters PIN3 and LAX3 during lateral root development in Arabidopsis thaliana

F. M. Perrine-Walker1,3,*, E. Jublanc2
1 Biochimie et Physiologie Moléculaire des Plantes, UMR5004 CNRS/INRA/SupAgroM/UM2, Institut de Biologie Intégrative des Plantes, Montpellier Cedex 1, France
2 UMR866 Dynamique Musculaire et Métabolisme, Montpellier, France
3 La Trobe Institute of Molecular Sciences, La Trobe University, Melbourne, Australia

Fluorophore tagged proteins are used in Arabidopsis thaliana to understand their functional role in plant development. This requires the analysis of their spatial localization in planta. However, the localization analysis is often perturbed by a significant overlap of the fluorophores used to label proteins of interest and the optical filtering methods available on the confocal microscope. This problem can be addressed by the use of spectral imaging with linear unmixing the image data. We applied this method to help us identify double transgenic A. thaliana lines which expressed two fluorescently tagged auxin transporter proteins: the auxin efflux protein PIN-FORMED-3 (PIN3), tagged with green fluorescent protein (GFP), and the auxin influx protein LIKE-AUX1-3 (LAX3), tagged with yellow fluorescent protein (YFP). This method allows the reliable separation of overlapping GFP and YFP fluorescence signals and subsequent localization analysis highlighting the potential benefit of this methodology in studies of lateral root development.

Keywords: linear unmixing; GFP; YFP; spectral imaging
Subjects: auxin transporters; lateral root development; spectral imaging; green fluorescent protein
Species: Arabidopsis thaliana

Received: January 21, 2014; Revised: April 15, 2014; Accepted: May 14, 2014; Published: December 1, 2014Show citation

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Perrine-Walker, F.M., & Jublanc, E. (2014). The localization of auxin transporters PIN3 and LAX3 during lateral root development in Arabidopsis thaliana. Biologia plantarum58(4), 778-782. doi: 10.1007/s10535-014-0446-1.
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