Plant growth regulators indole acetic acid

Plant growth regulators indol 3-yl acetic acid (I), 2-(l-naphthyl) acetic acid (II), indol 3-yl propionic acid (HI), 2-<2-naphthyl) acetic acid (IV), indol 3-yl butyric acid (V), 2-(l-naphthyl) acetamick (VI) and indol 3-yl acetic acid ethyl ester (VII)... 

While other plant studies were conducted relative to other morphological observations and interactions with exogenously applied plant growth regulators such as indole-3-acetic acid and abscisic acid, the major message was that CB influenced cytoplasmic streaming, but not cell division perse, in plants. 

Indole-3-acetic acid 50, also known as heteroauxin, is a phytohormone. It is mainly formed in buds, seeds and in young blossoms and is a plant growth regulator. 

Hormones are produced naturally by plants, while plant growth regulators are applied to plants by humans. Plant growth regulators may be synthetic compounds (e.g., Cycocel) that mimic naturally occurring plant hormones, or they may be natural hormones that are extracted from plant tissue (e.g., indole-3-acetic acid). 

At physiological concentrations (10 M), flavonoids may either stimulate or inhibit lAA oxidase (an enzyme which regulates the amount of the plant-growth-regulating hormone indole acetic acid (lAA or auxin) activity in peas... 

Cortisone is sometimes credited with chelating power but, from inspection of the formula, this seems unlikely, and no proof has been produced. The suggestion that indole-3-acetic acid exerts plant-growth regulating effects through chelation has been discounted by showing that it lacks chelating properties (Perrin, 1961). 

The largest number of indole derivatives which have been structurally characterized are the indole alkaloids these mainly arise from plant sources. Not unexpectedly, in view of tryptophan s status as one of the essential amino acids, there are also diverse derivatives found in microorganisms. Indole-3-acetic acid plays a major role in plant metabolism, being a growth regulator (74MI30600). 

The identification of indole-3-acetic acid (1) as the primary, natural regulator of growth in plants, made by Kdgl and coworkers1 in 1934, and its... 

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