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

Autor:	I. A. Yakhin, O. I. Yakhin, A. A. Lubyanov
Rok vydání:	2012
Předmět:	chemistry.chemical_classification fungi food and beverages Plant physiology Plant Science Biology Riboside chemistry.chemical_compound chemistry Auxin Shoot Botany Cytokinin Isopentenyladenosine Zeatin Abscisic acid
Zdroj:	Russian Journal of Plant Physiology. 59:398-405
ISSN:	1608-3407 1021-4437
DOI:	10.1134/s1021443712030193
Popis:	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.
Databáze:	OpenAIRE
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