Table of Contents

Introduction

 General Development
	Root hair zonation
	Origin of root hairs
	Phases of root hair growth
	Regulators of root hair growth

 Cell Biology 
	Cytoplasmic streaming
	The cytoskeleton
	Nuclear movement and the cytoskeleton
	Vesicles 
	Clathrin coated vesicles and coated pits
	Vesicle morphology and variation
	Organelles and the plasma membrane
	Electrobiology and gradients
	Lectins
	Cell wall (extracellular matrix)

 Molecular biology of development

 Root hairs and the Rhizobium/legume symbiosis

 Concluding comments

 References