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

Changes in cytokinin, auxin, and abscisic acid contents in wheat seedlings treated with the... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

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

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443712030193
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Apr 15, 2012

References

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