Of indole-3-acetic acid

Coupling reactions of indole-3-acetic acid derivatives have also p ovided convenient routes to indolo[2,3-a]carbazoles (Scheme 5). An iodine-p-omoted coupling... 

Jensen JB, H Egsgaard, H van Onckelen, BU Jochknsen (1995) Catabolism of indole-3-acetic acid and 4- and 5-chloroindole-3-acetic acid in Bradyrhizobium japonicum. J Bacterial 111 5762-5766. 

J. E. Loper and M. N. Schroth, Influence of bacterial sources of indole-3-acetic acid on root elongation of sugar beet. Phytopathology 76 386 (1986). 

MULLER, A., WEILER, E.W., IAA-synthase, an enzyme complex from Arabidopsis thaliana catalyzing the formation of indole-3-acetic acid from (S)-tryptophan, Biol. Chem., 2000,381, 679-686. 

Bialek K, Cohen JD. Isolation and partial characterization of the major amide-linked conjugate of indole-3-acetic acid from Phaseolus vulgaris. Plant Physiol 1986 80 99-104. 

Glycolic acid for synthesis of indole-3-acetic acid, 44, 64... 

Gronowitz adapted this technology to one-pot syntheses of indole-3-acetic acids and indole-3-pyruvic acid oxime ethers from A-BOC protected o-iodoanilines [328, 329]. Rawal employed the Pd-catalyzed cyclization of A-(o-bromoallyl)anilines to afford 4- and 6-hydroxyindoles, and a 4,6-dihydroxyindole [330], and Yang and co-workers have used a similar cyclization to prepare 8-carbolines 287 and 288 as illustrated by the two examples shown [331]. The apparent extraneous methyl group in 288 is derived from triethylamine. 

Indole-3-Acetic Acid. Dissolve 21.6 g of phenylhydrazine in 300 ml 0.3 N sulfuric acid. To this solution add 9.8 g of coned sulfuric acid. With stirring and heating to 100°, add dropwise 11.6 g of methyl-beta-formyl-propionate in 300 ml of 0.3 N sulfuric acid. Continue the heating and gentle stirring for 6 hours to get about 14 g of indole-3-acetic acid. This is from CA, 72, 66815 (1970). 

Put 6 g of indole-3-acetic acid into 250 ml of ether and add 3 g of piperidine (or any other equimolar amount of suitable primary amine) in 20 ml of ether. Mix gently for a little while and allow to stand to form precipitate. After all the precipitate has formed, filter it off and heat 7... 

DC031 Knypl, J. S., K. M. Chylinska, and M. W. Brzeski. Increased level of chloro-genic acid and inhibitors of indole-3-acetic acid oxidase in roots of carrot infested with the northern root-knot nematode. Physiol Plant Pathol 1975 6 51. 

Mass fragmentation determination of indole-3-acetic acid in callus tissues of Panax ginseng and hlicotiana tabacum. Chem Pharm Bull 1976 24 2038. 

Bergman, J. Koch, E. Pelcman, B. Reactions of Indole-3-acetic Acid Derivatives in Trifluoroacetic Acid, Tetrahedron Lett. 1995,36,3945-3948. 

Mixed Cytokinins. The first cytokinin, kinetin [525-79-1] (3), was isolated from stale herring sperm (8) but, like so many biologically active natural products, it was later found in the vascular system of tobacco stems and leaves (9). Yeast also proved to have a very high titre of kinetin (see Yeasts) (8). The compound is very active in increasing cell division in tobacco wound callus tissue that has been cultured on White s agar medium supplemented with 2 mg/L of indole-3-acetic acid (IAA) [87-51 -4], The presence of IAA is mandatory to induce cell division in the presence of kinetin. 

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... 

Alexander"2 has tried to assess the effect of indole-3-acetic acid, (2,4-dichlorophenoxy) acetic acid, and maleic hydrazide on the soluble carbohydrates and enzyme systems in sugarcane leaves. All of the chemical treatments increased sucrose, total reducing value, D-fructose, and D-glucose in leaves (compared with the controls), with a maximum at nine days after applying about two g. per plant. The indole auxin increased sucrose most, followed by the phenoxy compound and the hydrazide D-glucose increased in the reverse order. Poor translocation from the leaves may have caused the temporary increase in leaf photosynthate. Alterations in the enzyme activities as a result of the chemical treatment are difficult to interpret, partly since so little is known about their relative importance, and partly because the activity in the controls varied by as much as 100% from one sampling period to the next. 

Ferrer, M. A., Pedreno, M. A., Munoz, R., and Ros Barcelo, A., 1990, Oxidation of coniferyl alcohol by cell wall peroxidases at the expense of indole-3-acetic acid and 02, FEBSLett. 276 127-130. 

Lebuhn, M., and Hartmann, A. (1993). Method for determination of indole-3-acetic acid and related compounds of L-tryptophan catabolism in soils. /. Chromat. 629, 255-266. 

Oxidation of indole-3-acetic acid with peroxodisulfate (PDS) showed a first-order dependence on PDS and the reductant. Added hydrogen ions had no effect on the reaction. The non-radical mechanism shown in Scheme 3 has been proposed.83... 

Chemistry and Physiology of Conjugates of Indole-3-Acetic Acid... 

A new class of plant auxin herbicides are the phytotropins, exemplified by the semicarbazone diflufenzopyr [148], Diflufenzopyr is a systemic herbicide for the selective control of broadleaf and perennial weeds in corn. Unlike the early auxin herbicides, such as 2,4-d and dicamba, which acted as mimics of indole-3-acetic acid, phytotropins prevent polar auxin transport in sensitive plants, causing stunting and loss of tropic response [149],... 

The content of indole-3-acetic acid, IA A, in cells was determined according to the fluorometric analysis described by Kamisaka and Larsen [25]. 

Smith AM, Morrison WL, Milham PJ (1982) Oxidation of indole-3-acetic acid by peroxidase involvement of reduced peroxidase and compound III with superoxide as a product. Biochemistry 21 4414 1419... 

Because of the widespread occurrence of peroxidase in plant tissues, Nagle and Haard (1975) have suggested that it plays an important role in the development and senescence of plant tissues. It plays a role in biogenesis of ethylene in regulating ripening and senescence in the degradation of chlorophyll and in the oxidation of indole-3-acetic acid. 

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