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Updated: Jan 29, 2026

Imaging the Root Hair Morphology of Arabidopsis Seedlings in a Two-layer Microfluidic Platform
Published on: August 15, 2017
Rho-of-plant activated root hair formation requires Arabidopsis YIP4a/b gene function
Delphine Gendre1, Anirban Baral2, Xie Dang3
1Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S-901 83 Umeå, Sweden delfine.gendre@gmail.com mgrebe@uni-potsdam.de.
Abstract:
Root hairs are protrusions from root epidermal cells with crucial roles in plant soil interactions. Although much is known about patterning, polarity and tip growth of root hairs, contributions of membrane trafficking to hair initiation remain poorly understood. Here, we demonstrate that the trans-Golgi network-localized YPT-INTERACTING PROTEIN 4a and YPT-INTERACTING PROTEIN 4b (YIP4a/b) contribute to activation and plasma membrane accumulation of Rho-of-plant (ROP) small GTPases during hair initiation, identifying YIP4a/b as central trafficking components in ROP-dependent root hair formation.
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