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As soon as the first workers realized the importance of auxin in plant growth, they began to consider possible mechanisms of action. In fact, chapter 8 in the classic book, Phytohormones, is entitled “The Mechanism of Action;” as early as 1930 workers in the field were describing auxin-increased elasticity and plasticity of the cell wall (Went and Thimann, 1937). This review will cover five major experiments which have occurred since 1964. These noteworthy experiments have had measurable effects on the direction research has taken in this field in recent years, and on the evolution of our understanding of the mechanism of action of auxin.
KeywordsAuxin Action Plant Growth Substance Soybean Hypocotyl Hypo Thesis Avena Coleoptile
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