Summary
Three polyamines tested (cadaverine, spermidine and spermine) and their 2 precursors (the amino acids arginine and ornithine) inhibit the Ca2+-mediated secretion of peroxidases by sugarbeet cells in suspension culture at concentrations ranging from 10−15 to 10−5M. In the absence of exogenous Ca2+, spermine added at higher concentrations mimics the activatory effect of Ca2+, the other polyamines being without effect.
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Supported by the Belgian FRFC (grant No. 2.9009.75 to T.G.) and the Swiss National Foundation for Scientific Research (grant No. 3.140-0.81 to C.P. and H.G.).
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Gaspar, T., Kevers, C., Coumans, M. et al. Interaction of polyamines or their precursors with the calcium-controlled secretion of peroxidase by sugarbeet cells. Experientia 40, 696–697 (1984). https://doi.org/10.1007/BF01949728
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DOI: https://doi.org/10.1007/BF01949728