Hydrogen sulfide alleviates aluminum toxicity in barley seedlings

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	Hydrogen sulfide alleviates aluminum toxicity in barley seedlings
	Chen, J. ; Wang, W. H. ; Wu, F. H. ; You, C. Y. ; Liu, T. W. ; Dong, X. J. ; He, J. X. ; Zheng, H. L. ; Zheng HL(郑海雷)
刊名	http://dx.doi.org/10.1007/s11104-012-1275-7
	2013-01
关键词	Aluminum toxicity Citrate secretion H+-ATPase Hydrogen sulfide Oxidative stress Root elongation
英文摘要	Aluminum (Al) toxicity is one of the major factors that limit plant growth. Low concentration of hydrogen sulfide (H2S) has been proven to function in physiological responses to various stresses. The objective of this study is to investigate the possible role of H2S in Al toxicity in barley (Hordeum vulgare L) seedlings. Barley seedlings pre-treated with sodium hydrosulfide (NaHS), a H2S donor, and subsequently exposed to Al treatment were studied for their effects on root elongation, Al accumulation in seedlings, Al-induced citrate secretion and oxidative stress, and plasma membrane (PM) H+-ATPase expression. Our results showed that H2S had significant rescue effects on Al-induced inhibition of root elongation which was correlated well with the decrease of Al accumulation in seedlings. Meanwhile, Al-induced citrate secretion was also significantly enhanced by NaHS pretreatment. Al-induced oxidative stress as indicated by lipid peroxidation and reactive oxygen species burst was alleviated by H2S through the activation of the antioxidant system. Moreover, Al-induced reduction in PM H+-ATPase expression was reversed by exogenous NaHS. Altogether, our results suggest H2S plays an ameliorative role in protecting plants against Al toxicity by inducing the activities of antioxidant enzymes, increasing citrate secretion and citrate transporter gene expression, and enhancing the expression of PM H+-ATPase.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/65497]
专题	生命科学－已发表论文
推荐引用方式 GB/T 7714	Chen, J.,Wang, W. H.,Wu, F. H.,et al. Hydrogen sulfide alleviates aluminum toxicity in barley seedlings[J]. http://dx.doi.org/10.1007/s11104-012-1275-7,2013.
APA	Chen, J..,Wang, W. H..,Wu, F. H..,You, C. Y..,Liu, T. W..,...&郑海雷.(2013).Hydrogen sulfide alleviates aluminum toxicity in barley seedlings.http://dx.doi.org/10.1007/s11104-012-1275-7.
MLA	Chen, J.,et al."Hydrogen sulfide alleviates aluminum toxicity in barley seedlings".http://dx.doi.org/10.1007/s11104-012-1275-7 (2013).