Dual action of cytodef on stress effect of paraquat in winter rye plants

Dual action of cytodef on stress effect of paraquat in winter rye plants The plants of winter rye (Secale cereal L., cv. Estafeta Tatarstana) were used in the analysis of separate and joint action of herbicide paraquat (10, 100, and 250 μM) and cytodef, a synthetic growth regulator with cytokinin activity (from 10–11 to 10–8 M) on parameters characterizing oxidative stress. Both pretreatment of the seeds of winter rye with cytodef in high concentrations and that of the leaves with paraquat led to the appearance of oxidative stress symptoms in plants that were dependent on concentrations used. Cytodef combined with the herbicide contributed to normalization of plant state, which was manifested in reduced intensity of lipid peroxidation, as well as in reduced activity of catalase and ascorbate peroxidase in plant leaves. Maximal reduction in the damaging action of paraquat was identified in variants pretreated with cytodef in concentrations of 10–11 and 10–10 M; it was more pronounced in the aftereffect of treatment of rye plants with paraquat at high doses (100 and 250 μM). The dual effect of cytodef manifested in reduced damaging effects of paraquat (at low concentrations of cytodef) and maintained effects of paraquat (at high concentrations of cytodef). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Dual action of cytodef on stress effect of paraquat in winter rye plants

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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S102144371506014X
Publisher site
See Article on Publisher Site

Abstract

The plants of winter rye (Secale cereal L., cv. Estafeta Tatarstana) were used in the analysis of separate and joint action of herbicide paraquat (10, 100, and 250 μM) and cytodef, a synthetic growth regulator with cytokinin activity (from 10–11 to 10–8 M) on parameters characterizing oxidative stress. Both pretreatment of the seeds of winter rye with cytodef in high concentrations and that of the leaves with paraquat led to the appearance of oxidative stress symptoms in plants that were dependent on concentrations used. Cytodef combined with the herbicide contributed to normalization of plant state, which was manifested in reduced intensity of lipid peroxidation, as well as in reduced activity of catalase and ascorbate peroxidase in plant leaves. Maximal reduction in the damaging action of paraquat was identified in variants pretreated with cytodef in concentrations of 10–11 and 10–10 M; it was more pronounced in the aftereffect of treatment of rye plants with paraquat at high doses (100 and 250 μM). The dual effect of cytodef manifested in reduced damaging effects of paraquat (at low concentrations of cytodef) and maintained effects of paraquat (at high concentrations of cytodef).

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 18, 2015

References

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