Cytokinins contribute to realization of nitric oxide growth-stimulating and protective effects on wheat plants

Cytokinins contribute to realization of nitric oxide growth-stimulating and protective effects on... We investigated effects of sodium nitroprusside (SNP), the donor of nitric oxide (NO), on the growth and hormonal system of wheat plants (Triticum aestivum L.) in normal conditions and after salt stress (2% NaCl). During germination of seeds treated with SNP (50–500 μM), we obtained the SNP concentration (200 μM) optimal for stimulation of seedling growth estimated by increase in seed germination capacity and seedlings' linear sizes and their fresh and dry biomass. A comparative analysis of SNP (200 μM) effects, after seed germination in the medium with SNP or pretreatment of 3-day-old seedlings, showed SNP ability to increase the wheat plant resistance to subsequent effects of sodium chloride salinity at both treatment methods. Protective SNP effects appeared in the reduction of stress inhibitory action on seedling growth rates and significant reduction in the level of lipid peroxidation and exosmosis of electrolytes. An important contribution to realization of the growth-stimulating and protective effects of NO is associated with its ability to influence the state of the hormonal system of wheat plants due to an increase in the concentration of hormones of a cytokinin nature under normal conditions and the prevention of a decrease in their level under stress. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Cytokinins contribute to realization of nitric oxide growth-stimulating and protective effects on wheat plants

Cytokinins contribute to realization of nitric oxide growth-stimulating and protective effects on wheat plants

ISSN 1021-4437, Russian Journal of Plant Physiology, 2017, Vol. 64, No. 5, pp. 665–671. © Pleiades Publishing, Ltd., 2017. Original Russian Text © D.R. Maslennikova, Ch.R. Allagulova, K.A. Fedorova, A.A. Plotnikov, A.M. Avalbaev, F.M. Shakirova, 2017, published in Fiziologiya Rastenii, 2017, Vol. 64, No. 5, pp. 355–362. RESEARCH PAPERS Cytokinins Contribute to Realization of Nitric Oxide Growth-Stimulating and Protective Effects on Wheat Plants D. R. Maslennikova, Ch. R. Allagulova, K. A. Fedorova, A. A. Plotnikov, A. M. Avalbaev, and F. M. Shakirova* Institute of Biochemistry and Genetics, Ufa Scientific Center, Russian Academy of Sciences, Ufa, 450054 Russia *e-mail: shakirova@anrb.ru Received July 15, 2016 Abstract⎯ We investigated effects of sodium nitroprusside (SNP), the donor of nitric oxide (NO), on the growth and hormonal system of wheat plants (Triticum aestivum L.) in normal conditions and after salt stress (2% NaCl). During germination of seeds treated with SNP (50–500 μM), we obtained the SNP concentra- tion (200 μM) optimal for stimulation of seedling growth estimated by increase in seed germination capacity and seedlings' linear sizes and their fresh and dry biomass. A comparative analysis of SNP (200 μM) effects, after seed germination in the medium with SNP or pretreatment of 3-day-old seedlings, showed SNP ability to increase the wheat plant resistance to subsequent effects of sodium chloride salinity at both treatment methods. Protective SNP effects appeared in the reduction of stress inhibitory action on seedling growth rates and significant reduction in the level of lipid peroxidation and exosmosis of electrolytes. An important contri- bution to realization of the growth-stimulating and protective effects of NO is associated with its ability to inf lu- ence the state of the hormonal system of wheat plants due to an increase in the concentration of hormones of a cytokinin nature under normal...
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Publisher
Pleiades Publishing
Copyright
Copyright © 2017 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443717040094
Publisher site
See Article on Publisher Site

Abstract

We investigated effects of sodium nitroprusside (SNP), the donor of nitric oxide (NO), on the growth and hormonal system of wheat plants (Triticum aestivum L.) in normal conditions and after salt stress (2% NaCl). During germination of seeds treated with SNP (50–500 μM), we obtained the SNP concentration (200 μM) optimal for stimulation of seedling growth estimated by increase in seed germination capacity and seedlings' linear sizes and their fresh and dry biomass. A comparative analysis of SNP (200 μM) effects, after seed germination in the medium with SNP or pretreatment of 3-day-old seedlings, showed SNP ability to increase the wheat plant resistance to subsequent effects of sodium chloride salinity at both treatment methods. Protective SNP effects appeared in the reduction of stress inhibitory action on seedling growth rates and significant reduction in the level of lipid peroxidation and exosmosis of electrolytes. An important contribution to realization of the growth-stimulating and protective effects of NO is associated with its ability to influence the state of the hormonal system of wheat plants due to an increase in the concentration of hormones of a cytokinin nature under normal conditions and the prevention of a decrease in their level under stress.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Aug 20, 2017

References

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