EB1 contributes to microtubule bundling and organization, along with root growth, in Arabidopsis thaliana

Microtubules are involved in plant development and adaptation to their environment, but the sustaining molecular mechanisms remain elusive. Microtubule-end-binding 1 (EB1) proteins participate in directional root growth in However, a connection to the underlying microtubule array has not been establ...

Full description

Saved in:
Bibliographic Details
Published in:Biology open 2018, Vol.7 (8)
Main Authors: Molines, Arthur T, Marion, Jessica, Chabout, Salem, Besse, Laetitia, Dompierre, Jim P, Mouille, Grégory, Coquelle, Frédéric M
Format: Article
Language:English
Subjects:
Arabidopsis thaliana
Bundling
Cell division
Depletion
EB1 (end-binding protein 1)
Life Sciences
Microtubule
Microtubule bundling
Microtubule-network organization
Microtubules
Molecular modelling
Plant cells
Proteins
Root development
Root growth
Stimulated emission
TIPs (plus-end-tracking proteins)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microtubules are involved in plant development and adaptation to their environment, but the sustaining molecular mechanisms remain elusive. Microtubule-end-binding 1 (EB1) proteins participate in directional root growth in However, a connection to the underlying microtubule array has not been established yet. We show here that EB1 proteins contribute to the organization of cortical microtubules in growing epidermal plant cells, without significant modulation of microtubule dynamics. Using super-resolution stimulated emission depletion (STED) microscopy and an original quantification approach, we also demonstrate a significant reduction of apparent microtubule bundling in cytoplasmic-EB1-deficient plants, suggesting a function for EB1 in the interaction between adjacent microtubules. Furthermore, we observed root growth defects in EB1-deficient plants, which are not related to cell division impairment. Altogether, our results support a role for EB1 proteins in root development, in part by maintaining the organization of cortical microtubules.This article has an associated First Person interview with the first author of the paper.
ISSN:2046-6390
2046-6390
DOI:10.1242/bio.030510