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Chemical Compound Review:

Ribosylzeatin (2R,3S,4R,5R)-2- (hydroxymethyl)-5-[6-[[(E)...

Synonyms: UPCMLD-DP150, CPD-4208, SureCN4058989, CHEBI:71693, Z0375_SIGMA, ...

Casanova, E. et al., Kuroha, T. et al., Trione, E.J. et al., Miller, C.O., Sugiyama, T. et al., et al.

Casanova, Valdés, Fernández, Moysset, Trillas,

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High impact information on Zeatin riboside

Standard curves which consisted of logit/log plots of fluorescence units versus picomoles of competing cytokinin measured from 0.03 to 256 pmol (approximately 10-85,000 picograms) of zeatin riboside (ZR) or isopentenyl adenosine [1].
ZR is induced by low TDZ concentrations (0.0-0.005 micromol/L), whereas iP, that correlates with massive cell proliferation and the onset of shoot differentiation, is associated with high TDZ levels (0.5 micromol/L) [2].
Although trans-zeatin riboside (ZR), the most abundant cytokinin in squash xylem sap, had a concentration-dependent effect similar to that of total squash xylem sap, ZR concentrations several orders of magnitude greater than those found endogenously in squash xylem sap (i.e. 2 x 10(-8) M) were required to affect the growth of BY-2 cell protoplasts [3].
In submitochondrial particles (smp), zeatin was only weakly active, and zeatin riboside (ZR) was inactive [4].
Zeatin, ribosylzeatin, N6-isopentenyladenosine and 2-methylthio-ribosylzeatin in the top of tobacco plants were quantitated by mass spectrometry using deuterium-labeled standards [5].

Analytical, diagnostic and therapeutic context of Zeatin riboside

These facts and others discussed strongly support our suggestion that ribosylzeatin was present in the preparation ("cytokinesin I") examined by Wood and colleagues in several biological assays [6].

References

A quantitative fluorescence enzyme immunoassay for plant cytokinins. Trione, E.J., Banowetz, G.M., Krygier, B.B., Kathrein, J.M., Sayavedra-Soto, L. Anal. Biochem. (1987) [Pubmed]
Levels and immunolocalization of endogenous cytokinins in thidiazuron-induced shoot organogenesis in carnation. Casanova, E., Valdés, A.E., Fernández, B., Moysset, L., Trillas, M.I. J. Plant Physiol. (2004) [Pubmed]
Squash xylem sap has activities that inhibit proliferation and promote the elongation of tobacco BY-2 cell protoplasts. Kuroha, T., Sakurai, M., Satoh, S. Plant Physiol. Biochem. (2005) [Pubmed]
Specific interaction of cytokinins and their analogs with rotenone-sensitive internal NADH dehydrogenase in potato tuber mitochondria. Sue, M., Miyoshi, H., Iwamura, H. Biosci. Biotechnol. Biochem. (1997) [Pubmed]
Mass spectrometric determination of cytokinins in the top of tobacco plants using deuterium-labeled standards. Sugiyama, T., Hashizume, T. Nucleic Acids Symp. Ser. (1982) [Pubmed]
Cell-division factors from Vinca rosca L. crown gall tumor tissue. Miller, C.O. Proc. Natl. Acad. Sci. U.S.A. (1975) [Pubmed]

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