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	Salinity-induced Physiological Modification in the Callus from Halophyte Nitraria tangutorum Bobr.
	Yang, Yingli1,3; Wei, Xueling1; Shi, Ruxia1; Fan, Qing1; An, Lizhe2,3
刊名	JOURNAL OF PLANT GROWTH REGULATION
	2010-12-01
卷号	29期号:4页码:465-476
关键词	Catalase Homeostasis Malondialdehyde Nitric oxide Nitraria Tangutorum Bobr Salinity
ISSN号	0721-7595
DOI	10.1007/s00344-010-9158-8
通讯作者	Yang, Yingli(xbsfyangyingli@163.com)
英文摘要	Little is known about the physiological adaptation mechanisms of the desert halophyte Nitraria tangutorum Bobr. to the environment. In this study, callus from Nitraria tangutorum Bobr. was used to investigate physiological responses to salinity and the regulatory function of nitric oxide (NO) on catalase (CAT) activity. Increased dry weight and soluble proteins were observed in the callus exposed to lower salinity (50 and 100 mM NaCl), whereas 200 mM NaCl led to significant decreases of these two growth parameters, and the levels of proline and soluble carbohydrates also were enhanced under NaCl treatment. In addition, short-term stress from 50 mM NaCl and the application of lower sodium nitroprusside (SNP, a NO donor) concentration resulted in decreased levels of malondialdehyde (MDA). In contrast, higher concentrations of NaCl and SNP induced significant oxidative damage in Nitraria tangutorum Bobr. callus. Analysis based on the fluorescent probe DAF-FM DA revealed that NaCl and SNP treatment led to enhanced levels of NO in the callus cells. Moreover, the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) reduced endogenous NO concentrations and abolished the enhancement in dry weight and the decrease in MDA level under 50-mM-NaCl treatment. CAT activity increased under salt stress, and the 50-mM-NaCl effect was alleviated by treatment with c-PTIO or the nitric oxide synthase inhibitor N(omega)-nitro-l-arginine. We suggest that Nitraria tangutorum Bobr. callus exhibited tolerance to lower-salinity stress. We also showed that increased NO generation in response to salinity might be associated with regulation of growth, protection against oxidative damage, and excitation of CAT activity in Nitraria tangutorum Bobr. callus under salt stress.
收录类别	SCI
WOS关键词	PROGRAMMED CELL-DEATH ; NITRIC-OXIDE ; SALT STRESS ; LIPID-PEROXIDATION ; HYDROGEN-PEROXIDE ; OXIDATIVE STRESS ; ANTIOXIDATIVE ENZYMES ; ASCORBATE PEROXIDASE ; PLANTS ; RESPONSES
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000285202300008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556367
专题	寒区旱区环境与工程研究所
通讯作者	Yang, Yingli
作者单位	1.NW Normal Univ, Sch Life Sci, Lanzhou 730070, Gansu, Peoples R China 2.Lanzhou Univ, Sch Life Sci, State Key Lab Arid Agroecol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yingli,Wei, Xueling,Shi, Ruxia,et al. Salinity-induced Physiological Modification in the Callus from Halophyte Nitraria tangutorum Bobr.[J]. JOURNAL OF PLANT GROWTH REGULATION,2010,29(4):465-476.
APA	Yang, Yingli,Wei, Xueling,Shi, Ruxia,Fan, Qing,&An, Lizhe.(2010).Salinity-induced Physiological Modification in the Callus from Halophyte Nitraria tangutorum Bobr..JOURNAL OF PLANT GROWTH REGULATION,29(4),465-476.
MLA	Yang, Yingli,et al."Salinity-induced Physiological Modification in the Callus from Halophyte Nitraria tangutorum Bobr.".JOURNAL OF PLANT GROWTH REGULATION 29.4(2010):465-476.

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