Exogenous NO depletes Cd-induced toxicity by eliminating oxidative damage, re-establishing ATPase activity, and maintaining stress-related hormone equilibrium in white clover plants

doi:10.1007/s11356-015-4888-6

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	Exogenous NO depletes Cd-induced toxicity by eliminating oxidative damage, re-establishing ATPase activity, and maintaining stress-related hormone equilibrium in white clover plants
	Liu,S. L.; Yang,R. J.; Pan,Y. Z.; Wang,M. H.; Zhao,Y.; Wu,M. X.; Hu,J.; Zhang,L. L.; Ma,M. D.
	2015-11-01
发表期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷号	22 期号:21 页码:16843-16856
摘要	Various nitric oxide (NO) regulators [including the NO donor sodium nitroprusside (SNP), the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), the NO-synthase inhibitor N (G)-nitro-(L)-Arg-methyl ester ((L)-NAME), and the SNP analogues sodium nitrite/nitrate and sodium ferrocyanide] were investigated to elucidate the role of NO in white clover (Trifolium repens L.) plants after long-term (5 days) exposure to cadmium (Cd). A dose of 100 mu M Cd stress significantly restrained plant growth and decreased the concentrations of chlorophyll and NO in vivo, whereas it disrupted the balance of stress-related hormones and enhanced the accumulation of Cd, thereby inducing reactive oxygen species (ROS) burst. However, the inhibition of plant growth was relieved by 50 mu M SNP through its stimulation of ROS-scavenging compounds (ascorbic acid, ascorbate peroxidase, catalase, glutathione reductase, non-protein thiol, superoxide dismutase, and total glutathione), regulation of H+-ATPase activity of proton pumps, and increasing jasmonic acid and proline but decreasing ethylene in plant tissues. Even so, the alleviating effect of SNP on plant growth was counteracted by cPTIO and (L)-NAME and was not observed with SNP analogues, suggesting that the protective roles of SNP are related to the induction of NO. These results suggest that NO may improve the Cd tolerance of white clover plants by eliminating oxidative damage, re-establishing ATPase activity, and maintaining hormone equilibrium. Improving our understanding of the role of NO in white clover plants is key to expanding the plantations to various regions and the recovery of pasture species in the future.
关键词	Atpase Activity Cd-induced Toxicity Oxidative Damage Nitric Oxide Stress-related Hormones TrifoL.um Repens L.
DOI	10.1007/s11356-015-4888-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000363964700054
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25229
专题	离退休
推荐引用方式 GB/T 7714	Liu,S. L.,Yang,R. J.,Pan,Y. Z.,et al. Exogenous NO depletes Cd-induced toxicity by eliminating oxidative damage, re-establishing ATPase activity, and maintaining stress-related hormone equilibrium in white clover plants[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015,22(21):16843-16856.
APA	Liu,S. L..,Yang,R. J..,Pan,Y. Z..,Wang,M. H..,Zhao,Y..,...&Ma,M. D..(2015).Exogenous NO depletes Cd-induced toxicity by eliminating oxidative damage, re-establishing ATPase activity, and maintaining stress-related hormone equilibrium in white clover plants.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(21),16843-16856.
MLA	Liu,S. L.,et al."Exogenous NO depletes Cd-induced toxicity by eliminating oxidative damage, re-establishing ATPase activity, and maintaining stress-related hormone equilibrium in white clover plants".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.21(2015):16843-16856.

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