Rho-of-plant activated root hair formation requires Arabidopsis YIP4a/b gene function

Development. 2019 Mar 11;146(5):dev168559. doi: 10.1242/dev.168559.

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.

Keywords: ROP; Root hair; Secretion; Trans-Golgi network; YIP.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arabidopsis / enzymology*
  • Arabidopsis Proteins / genetics
  • Arabidopsis Proteins / pharmacology
  • Arabidopsis Proteins / physiology*
  • Cell Membrane / physiology
  • Genes, Plant*
  • Genotype
  • Membrane Proteins / genetics
  • Membrane Proteins / pharmacology*
  • Monomeric GTP-Binding Proteins / physiology
  • Mutation
  • Phenotype
  • Plant Roots / physiology*
  • Protein Transport
  • Seeds
  • rho GTP-Binding Proteins / physiology*
  • trans-Golgi Network / physiology

Substances

  • AT4G30260 protein, Arabidopsis
  • Arabidopsis Proteins
  • Membrane Proteins
  • Monomeric GTP-Binding Proteins
  • rho GTP-Binding Proteins