Russian Journal of Plant Physiology

, Volume 59, Issue 3, pp 398–405 | Cite as

Changes in cytokinin, auxin, and abscisic acid contents in wheat seedlings treated with the growth regulator Stifun

  • O. I. Yakhin
  • A. A. Lubyanov
  • I. A. Yakhin
Applied Aspects


The growth regulator Stifun at all concentrations tested (0.033, 0.33, 3.3, and 33 mg/L) affected the hormonal status of wheat seedlings (Triticum aestivum L., cv. Zhnitsa) and stimulated plant growth. This was evident in activation of cell division and elongation, as well as in the increase in shoot and root length, water content, and dry weight. Effects of Stifun on roots and shoots depended on concentration. Application of Stifun at the optimal growth-stimulating concentration (0.033 mg/L) elevated the levels of zeatin, zeatin riboside, dihydrozeatin riboside, isopentenyladenosine, and IAA in roots of 2-day-old seedlings, but reduced the ABA content. The levels of ABA, IAA, dihydrozeatin, and dihydrozeatin riboside in shoots increased, while the levels of zeatin riboside, isopentenyl adenine, and isopentenyladenosine decreased. The results indicate that the hormonal system plays a part in the plant response to growth-stimulating action of Stifun.


Triticum aestivum growth regulator Stifun cytokinins zeatin zeatin riboside dihydrozeatin dihydrozeatin riboside isopentenyl adenine isopentenyladenosine IAA ABA mitotic index 







dihydrozeatin riboside


enzyme immunosorbent analysis


isopentenyl adenine




mitotic index


phosphate buffer saline supplemented with Tween-20


ZR-zeatin riboside


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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • O. I. Yakhin
    • 1
  • A. A. Lubyanov
    • 1
    • 2
  • I. A. Yakhin
    • 1
  1. 1.Institute of Biochemistry and Genetics, Ufa Research CenterRussian Academy of SciencesUfa, BashkortostanRussia
  2. 2.Orenburg State UniversityUfa Branch, Ufa, BashkortostanRussia

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