Isolation and quantitation of isopentenyladenosine in an anise cell culture by single-ion monitoring,radioimmunoassay and bioassay |
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Authors: | D. Ernst W. Schäfer D. Oesterhelt |
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Affiliation: | 1. Max-Planck-Institut für Biochemie, D-8033, Martinsried, Federal Republic of Germany
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Abstract: | Using three different techniques, isopentenyladenosine was identified and quantitated in an anise cell line (Pimpinella anisum L.), growing on a medium without cytokinin. A method to quantitate cytokinins was developed which utilizes extraction of cytokinins in the presence of a deuterated reference compound and subsequent quantitation of the cytokinins by single-ion monitoring on a gas chromatography-mass spectrometry system. The results were compared with those obtained by radioimmunoassay as well as a bioassay. Quantitations by gas chromatography-mass spectrometry and radioimmunoassay correlated well, whereas the estimates by the bioassay gave considerably lower values. |
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