Indole-3-butyric acid

Indium-tin-oxide anode, 22 215, 216 Indium trichloride, 14 197, 201 Indo-3-lyl acetic acid, 13 284 Indole-3-acetic acid, 13 35, 38. See also Indoleacetic acids (IAAs) Indole-3-butyric acid, 13 25t... 

Plant growth regulators, 13 21-60, 284 carvone, 13 28 cytokinins, 13 28-30 ft-decanol, 13 30 dikegulac, 13 30 ethylene, 13 30-32 gamma aminobutyric acid, 13 32 gibberehins, 13 32-35 indole 3-butyric acid, 13 35-36 lactic acid, 13 36 natural product derivatives,... 

Ludwig-Mliller, J. Indole-3-butyric acid in plant growth and development. Plant Growth Regul 2000a 32 219-230. 

A second method of assay of IAA has been developed by Mr. J. Cohen and involves a "double internal standard" usually 14C-IAA and 14C-indole-3-butyric acid (37). I will not discuss this method of assay except to indicate that it is possible to develop assays not involving mass spectrometry but with comparable sensitivity and good selectivity. 

Indolebutyric acid indole-3-butyric acid IBA Hormodin... 

Auxins are defined as organic substances that promote cell elongation when applied in low concentrations to plant tissue segments in a bioassay. By this definition, there are several other native auxins that have been reported to occur in plants in addition to the most often studied auxin, IAA. These include the halogen-substituted 4-C1-IAA,23 as well as phenylacetic acid and indole-3-butyric acid.24 All native auxins are found in planta as both free acids and conjugated forms through ester or amide linkages. IAA, the auxin most extensively studied, will be the focus of this chapter. 

Foliar spray of oxytetracycline, tetracycline hydrochloride or penicillin and or dipping of cuttings of infected plants in indole-3-acetic acid (IAA) or indole-3-butyric acid (IBA) have been attempted by various workers in India and abroad for remission of Phytoplasma in various plants or their control to some extent. 

In 1926 Frits Went, a student in the Netherlands, detected that the tips of wheat seedlings contained a substance that caused the seedlings to bend toward the light. The identity of the substance, which was given the name auxin from the Greek auxein (meaning "to increase"), was unknown. A few years later it was shown that auxin was indole-3-acetic acid (I A A). Today, four natural auxins are known. Besides IAA there are indole-3-butyric acid, phenylacetic acid, and 4-chloroindole-3-acetic acid. (It is quite interesting to find a chlorinated aromatic substance as a natural substance. It is synthesized... 

The natural auxins indole-3-acetic acid, 4-chloroindole-3-acetic acid, phenylacetic acid, and indole-3-butyric acid... 

Indolebutyric Acid. IH-Indote-3-batanoic acid indole 3 butyric acid 4-(3-indo]y] butyrie acid. C HuNO, mol wt 203.23. C 70.9]%, H 6.45%, N 6.89%, 6 15.74%. Preparation Jackson, Manske, J. Am. Chem. Soe. 52, 5029 (1930) by heating indole, y-butyrolactone, and sodium hydroxide, Followed by acidification of the product Fritz, U.S. pat. 3,051,723 (1962 to Union Carbide) by decarboxylation of 2-carboxyindole 3-butyric acid Bowman, Islip, Chem. Ind. (London) 1971, 154. Toxicity causes tumors in rats, Pesonen, Acta Endocrinol 5, 409 (1950) hypoglycemic effect in rats, Mirsky et al. Endocrinology 59, 715 (1956). 

Chloroindole-3-acetic acid and indole-3-butyric acid in plants... 

Although indole-3-acetic acid was the first auxin isolated, and is considered to be the major plant auxin, other compounds with auxin activity also occur in plants. Most of these compounds are active only at higher concentrations than lAA and their role in growth remains largely unknown. Two indolic auxins other than lAA have been isolated from plants, indole-3-butyric acid (IBA) and 4-chloro-indole-3-acetic acid (4-Cl-IAA). 

Auxins are one of the five major classes of plant-produced hormones that affect plant growth including bud formation and root initiation (see http //en.wikipedia. org/wiki/Plant hormone Auxins), lndole-3-acetic acid is the most common auxin found in plants. Although the small amounts produced internally have the desired effects, auxins are toxic to plants in larger amounts. The nefarious weed-control products 2,4-D and 2,4,5-T target the auxin receptor but bear little resemblance to the natural ligand. Other man-made auxins such as 1-naphthaleneacetic acid and indole-3-butyric acid are used, not to kill weeds, but to stimulate root production in cuttings taken from the parent plant (Scheme 6). 

POLYMERIC AUXIN PLANT GROWTH HORMONES BASED ON THE CONDENSATION PRODUCTS OF INDOLE-3-BUTYRIC ACID WITH BIS(CYCLOPENTADlENYL) TITANIUM IV DICHLORIDE AND DYPYRIDINE MANGANESE II DICHLORIDE... 

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