NDLI: Effect of sodium nitroprusside on heat resistance of wheat coleoptiles: Dependence on the formation and scavenging of reactive oxygen species

Content Provider	Springer Nature Link
Author	Karpets, Yu. V. Kolupaev, Yu. E. Yastreb, T. O.
Copyright Year	2011
Abstract	The effect of nitric oxide donor sodium nitroprusside (SNP) on resistance of coleoptiles of 4-day-old etiolated seedlings of wheat (Triticum aestivum L., cv. Elegiya) to damaging heating (10 min at 43°C) and possible dependence of this effect on changes in the activities of enzymes producing and scavenging reactive oxygen species (ROS) were studied. Treatment of coleoptiles with 500 μM SNP considerably boosted generation of superoxide anion radical therein. This effect was substantially suppressed by blocker of calcium channels (lanthanum chloride), calmodulin antagonist (chlorpromazine), and inhibitor of NADPH-oxidase (imidazole) but not by peroxidase inhibitor (salicylhydroxamic acid). NO donor activated antioxidant enzymes (superoxide dismutase, catalase, and soluble peroxidase) and elevated heat resistance of wheat coleoptiles. NO scavenger methylene blue, antioxidant agent ionol, calcium antagonists, and NADPH-oxidase inhibitor imidazole substantially reduced the elevation of heat resistance of wheat coleoptiles induced by NO donor. It was concluded that SNP-induced heat resistance of coleoptiles depended on calcium and ROS, whose production is probably boosted by activation of NADPH-oxidase.
Starting Page	1027
Ending Page	1033
Page Count	7
File Format	PDF
ISSN	10214437
Journal	Russian Journal of Plant Physiology
Volume Number	58
Issue Number	6
e-ISSN	16083407
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-10-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Triticum aestivum nitric oxide reactive oxygen species superoxide anion radical NADPH-oxidase calcium antioxidant enzymes heat resistance Plant Physiology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science

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