CONTENTS / p2
Chapter1 General Introduction / p1
　1.1 Discovery of First Plant Hormone,Indole-3-Acetic Acid / p1
　1.2 Research of Indole-3-Acetic Acid Biosynthesis Pathway in Higher Plants / p2
　1.3 Auxin Receptor for Cell Elongation in Higher Plants / p8
　1.4 Purpose of This Study / p9
Chapter2 Biosynthesis of Indole-3-Acetic Acid in Shoots in Higher Plants / p11
　2.1 Conversion of D-Tryptophan to Indole-3-Acetic Acid in Coleoptiles of a Normal and a Semi-dwarf Mutant Barley(Hordeum vulgare)Strain / p11
　2.2 Conversion of Indole-3-Acetaldehyde to Indole-3-Acetic Acid in Cell-Wall Fraction of Barley(Hordeum vulgare)Seedlings / p24
　2.3 Distribution of Indole-3-Acetic Acid in Apoplast and Symplast of Squash(Cucurbita maxima)Hypocotyl / p37
Chapter3 Biosynthesis of Indole-3-Acetic Acid in Roots in Higher Plants / p48
　3.1 Natural Occurrence of Indole-3-Acetamide and Amidohydrolase Activity in Etiolated,Aseptically-Grown Squash Seedlings / p48
　3.2 Cell-Free Root Preparations of Aseptically Grown Squash Seedlings Convert N-Hydroxy-Tryptophan to Indole-3-Acetic Acid / p67
Chapter4 General Discussion / p91
Acknowledgement / p100
References / p101