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Occurrence of plant hormones in cells of the phototrophic purple bacterium Rhodospirillum rubrum 1R

Olga P. Serdyuk , Lidiya D. Smolygina , Eugine F. Kobzar , Ivan N. Gogotov
DOI: http://dx.doi.org/10.1111/j.1574-6968.1993.tb06152.x 113-116 First published online: 1 May 1993


Plant hormones from biomass of the purple non-sulfur bacterium Rhodospiririllum rubrum were isolated for the first time. These compounds show high physiological activities (300–330%) in the cytokinin bioassay. All three detected cytokinins are adenine derivatives, according to spectral analysis. One of them was identified as 6-(4-hydroxy-3-methyl-2-trans-2-bytenylamino)-9-β-D-ribofuranosylpurine (zeatinriboside) as shown by thin-layer chromatography and reversed-phase high-performance liquid chromatography. The possible functions of bacterial cytokinins are also discussed.

Key words
  • Rhodospirillum rubrum
  • Phototrophic purple bacterium
  • Plant hormone
  • Cytokinin
  • Zeatinriboside

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