Abstract
8-QUINOLINOL sulphate has antifungal and antibacterial properties and is used to reduce contamination by microorganisms. The addition of 8-quinolinol to the incubation media used in the bioassay of phytokinin activity in an oat leaf senescence test was, surprisingly, found to cause a retardation of senescence. Whereas leaves incubated with an aqueous solution of the chelating agent 8-quinolinol sulphate lost their chlorophyll, those incubated in the presence of either buffered or neutralized 8-quinolinol sulphate did not. When quinolinol sulphate was tested for a range of pHs it was found to be inactive at pH 4, but at pH 7 there was maximum activity at concentrations between 160 and 180 mg/l. (Fig. 1).
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CHUA, S. Phytokinin-like Activity of 8-Quinolinol Sulphate. Nature 225, 101–102 (1970). https://doi.org/10.1038/225101a0
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DOI: https://doi.org/10.1038/225101a0
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