Abstract
Hormone concentration was measured in shoots of maize and wheat seedlings shortly after addition of PEG or ice to nutrient medium, or after dipping the roots for 0.5 min in a concentrated solution of potassium chloride. The concentration of IAA (indole-3-acetic acid), ABA (abscisic acid) and cytokinins was immunoassayed using specific antibodies. Very fast changes in hormone content were observed in shoots of plants following their root treatment. Evidence is presented which supports the involvement of shoot metabolic processes in the control of hormone content changes. Both accumulation of ABA in the shoot of PEG-treated plants and the decrease in cytokinin in the shoots of cooled plants correlated with the cessation of shoot extension in stressed plants. Possible mechanisms of fast signal transfer from roots to shoots are discussed.
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Kudoyarova, G. et al. (2001). Fast shoot responses to root treatment. Are hormones involved?. In: GaÅ¡parÃková, O., ÄŒiamporová, M., MistrÃk, I., BaluÅ¡ka, F. (eds) Recent Advances of Plant Root Structure and Function. Developments in Plant and Soil Sciences, vol 90. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2858-4_16
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DOI: https://doi.org/10.1007/978-94-017-2858-4_16
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