Endosomal interactions during root hair growth

von Wangenheim, Daniel and Rosero, Amparo and Komis, George and Šamajová, Olga and Ovečka, Miroslav and Voigt, Boris and Šamaj, Jozef (2016) Endosomal interactions during root hair growth. Frontiers in Plant Science, 6. Article number: 1262 . ISSN 1664-462X

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Official URL: http://dx.doi.org/10.3389/fpls.2015.01262


The dynamic localization of endosomal compartments labeled with targeted fluorescent protein tags is routinely followed by time lapse fluorescence microscopy approaches and single particle tracking algorithms. In this way trajectories of individual endosomes can be mapped and linked to physiological processes as cell growth. However, other aspects of dynamic behavior including endosomal interactions are difficult to follow in this manner. Therefore, we characterized the localization and dynamic properties of early and late endosomes throughout the entire course of root hair formation by means of spinning disc time lapse imaging and post-acquisition automated multitracking and quantitative analysis. Our results show differential motile behavior of early and late endosomes and interactions of late endosomes that may be specified to particular root hair domains. Detailed data analysis revealed a particular transient interaction between late endosomes—termed herein as dancing-endosomes—which is not concluding to vesicular fusion. Endosomes preferentially located in the root hair tip interacted as dancing-endosomes and traveled short distances during this interaction. Finally, sizes of early and late endosomes were addressed by means of super-resolution structured illumination microscopy (SIM) to corroborate measurements on the spinning disc. This is a first study providing quantitative microscopic data on dynamic spatio-temporal interactions of endosomes during root hair tip growth.

Item Type: Article
DOI: 10.3389/fpls.2015.01262
Uncontrolled Keywords: endosomes, Development, Arabidopsis thaliana, Trafficking, Root hair, Interaction, Spinning disc microscopy, Structured illumination microscopy
Subjects: 500 Science > 580 Plants > 581 Botany
Research Group: Friml Group
SWORD Depositor: Sword Import User
Depositing User: Sword Import User
Date Deposited: 06 Dec 2016 13:32
Last Modified: 05 Sep 2017 10:02
URI: https://repository.ist.ac.at/id/eprint/710

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