. The chemistry and mode of action of plant growth substances; proceedings of a symposium held at Wye College, University of London, July 1955. Plant regulators; Auxin; Growth (Plants). Cl Cl 0-^c: ,^^ A 02 17 Cl 40 V-"'" 1 02 40 â Cl- ^^^ci°^c-°^ cr°> ^^^ Cl ni 02 ni H I ^c. 0" 1 "c^ 0 02. 1 . 14 70 Figure 7. Distribution of auxin-receptor of the Avena coleoptile section among the varied forms of auxin-receptor complex. Data for phenoxyacetic acids. The distributions are calculated for the optimal concentration of each growth substance, sifter Foster (1953). We may n
. The chemistry and mode of action of plant growth substances; proceedings of a symposium held at Wye College, University of London, July 1955. Plant regulators; Auxin; Growth (Plants). Cl Cl 0-^c: ,^^ A 02 17 Cl 40 V-"'" 1 02 40 â Cl- ^^^ci°^c-°^ cr°> ^^^ Cl ni 02 ni H I ^c. 0" 1 "c^ 0 02. 1 . 14 70 Figure 7. Distribution of auxin-receptor of the Avena coleoptile section among the varied forms of auxin-receptor complex. Data for phenoxyacetic acids. The distributions are calculated for the optimal concentration of each growth substance, sifter Foster (1953). We may now determine the ratio of any one form of ES to £'totai i^ terms of the several equihbrium constants K, and auxin concentration {S). For example, the expression relating growth active -fi'.S'i 2 to -Etotai is of the form (^â¢^) .(15) We can now solve equation (15) for the numerical value of £'6'i g/^^totai foJ" any given value of auxin concentration. Let us use that concentration of 2:4-D which yields maximum growth rate, 6xlO-*^M. Expressions similar to that of equation (15) can be derived for each of the individual ES complexes and can be similarly solved. The results, summarized in Figure 7, indicate that for coleoptiles in steady-state growth in the optimum concentra- tion of 2:4-D, approximately 70 per cent of receptor endties are combined in growth active £^'1,2 at any one moment, and that the remainder are distri- buted between varied growth inactive precomplexes, particularly the sinlgy attached (through the carboxyl group) ES-^^. 303. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wye College; Wain, R. L; Wightman, F. (Frank). London, Butterworths Scientific Publications
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Keywords: ., bookcentury1900, bookcollectionbiodiver, booksubjectgrowthplants
