biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 27:216, 1985 | DOI: 10.1007/BF02902163

Control of growth by auxin and its specific neutral inhibitor

R. M. Muir1
1 Department of Botany, University of Iowa, Iowa City, USA

Evidence for the existence of a neutral inhibitor specific for auxin has been in the literature for 45 years. The inhibitor is demonstrable by its effect in causing positive curvature of theAvena coleoptile. The growth of the mesocotyl of oat and corn seedlings in darkness and its inhibition by light are determined by the neutral inhibitor as is the phototropic response of the sunflower stem. Production of the inhibitor is promoted by red and fluorescent light. Irradiance at 730 nm promotes auxin production while irradiance at 660 nm promotes production of the inhibitor. The positive curvature induced by 2,3,5-triiodobenzoic acid can be used to quantify the neutral inhibitor. Since the benzoic acid is more effective than iodoacetate in reacting with the sulfhydryl of cysteine, a sulfhydryl group is indicated to bo one reaction site for auxin and to be the basis of polar transport.

Published: March 1, 1985  Show citation

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Muir, R.M. (1985). Control of growth by auxin and its specific neutral inhibitor. Biologia plantarum, 27(2-3), 216. doi: 10.1007/BF02902163
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    References

    1. Bruinsma, J., Karssen, G. M., Benschop, M., van Dort, J. B.: Hormonal regulation of phototropism in the light-grown sunflower seedling,Helianthus annvus L.: immobility of endogenous indoleaeetic acid and inhibition of hypocotyl growth by illuminated cotyledons. - J. exp. Bot.26: 411-418, 1975. Go to original source...
    2. Dickens, F.: Interaction of halogen acetates and SH compounds. - Biochem. J.27: 1141-1151, 1933. Go to original source...
    3. Ferguson, J. L.: Analysis of factors influencing the curvature responses of coleoptiles to plantgrowth hormone. - Diss, Abstr. Int. Ser. B32: 5058, 1971.
    4. Franssen, J. M., Bruinsma, J.: Relationships between xanthoxin phototropism, and elongation growth in the sunflower seedlingHelianthus annvus L. - Planta151: 365-370, 1981. Go to original source...
    5. Fukui, K., Nagata, C., Yonezawa, T.: Electronic structure and auxin activity of benzoic acid derivatives. - J. amer. chem. Soc.80: 2267-2270, 1958. Go to original source...
    6. Iino, M., Carr, D. S.: Sources of free IAA in the mesocotyl of etiolated maize seedlings. - Plant Physiol.69: 1109-1112, 1982. Go to original source...
    7. Kessler, R. W.: The use of theAvenu curvature test for the detection of endogenous inhibitors of plant growth. - Diss. Abstr. Int. Ser. B42: 1733, 1981.
    8. Lam, S., Leopold, A. C.: Role of leaves in phototropism. - Plant Physiol.41: 847-851, 1966. Go to original source...
    9. Leopold, A. C., Price, C. A.: The influence of growth substances upon sulphydryl compounds. - In:Wain, R. L., Wightman, F. (ed.): The Chemistry and Mode of Action of Plant Growth Substances. Pp. 271-283. Academic Press Inc., New York 1956.
    10. Mer, C. L.: A critical study of the auxin theory of growth regulation in the mesocotyl ofAvena sativa. - Ann. Bot.15: 179-207, 1951. Go to original source...
    11. Muir, R. M., Hansch, C.: The relationship of structure and plant-growth activity of substituted benzoic and phenoxyacetic acids. - Plant Physiol.26: 369-374, 1951. Go to original source...
    12. Muir, R. M., Hansch, C.: Chemical structure and growth activity of substituted benzoie acids. - In: Plant Growth Regulation. Fourth International Conference on Plant Growth Regulation, Pp. 249-258. Iowa State Univ. Press, Ames, Iowa 1961.
    13. Muir, R. M., Zhu, L.: Effect of light in the control of growth by auxin and its inhibitor(s) in the sunflower.- Physiol. Plant.57: 407-410, 1983. Go to original source...
    14. Schneider, C. L.: The effect of red light on growth of theArena seedling with special reference to the first internode.- Amer. J. Bot.28: 878-886, 1941. Go to original source...
    15. Shibaoka, H.: Studies on the mechanism of growth inhibiting effect of light. - Plant Cell Physiol.2: 175-197, 1961.
    16. Snow, R.: An inhibitor of growth extracted from pea leaves. - Nature144: 106, 1939. Go to original source...
    17. Stewart, W., S., Bergben, W., Redemann, C. E.: A plant growth inhibitor. - Sciences89: 185-186, 1939. Go to original source...
    18. Thompson, A. G., Bruinsma, J.: Xanthoxin: a growth inhibitor in light-grown sunflower seedlings,Helianthus annuus L. - J. exp. Bot.28: 804-810, 1977. Go to original source...
    19. van Overbeek, J.: Growth hormone and mesocotyl growth. - Rec. Trav. Bot. neerl.33: 333 to 340, 1936.
    20. van Overbeek, J.: A quantitative study of auxin and its precursors in coleoptiles. - Am. J. Bot.28: 1-10, 1941. Go to original source...
    21. Went, F. W.: Wuchsstoff und Wachstum. - Rec. Trav. Bot. neerl.25: 1-116, 1928.

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