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题名: Nitrogen deprivation induces cross-tolerance of Poa annua callus to salt stress
作者: Zhao, CZ; Li, P; Wang, XM; Li, P; Wang, XY; Wang, F; Wang, JF; Chang, N; Bi, YR
收录类别: SCIE ; BIOSIS
出版日期: 2016-09
刊名: BIOLOGIA PLANTARUM
卷号: 60, 期号:3, 页码:543-554
出版者: ACAD SCI CZECH
出版地: PRAHA
英文摘要: Alternative respiration pathway (AP) is an important pathway which can be induced by environment stresses in plants. In the present study, we show a new mechanism involving the AP in nitrogen deprivation-induced tolerance of Poa annua callus to salt stress. The AP capacity markedly increased under a 600 mM NaCl treatment or nitrogen deprivation pretreatment and reached a maximum under the nitrogen deprivation pretreatment combined with the NaCl treatment (-N+NaCl). Malondialdehyde (MDA) and H2O2 content and Na+/K+ ratio significantly increased under the 600 mM NaCl treatment but less under the-N+NaCl treatment. Moreover, both the nitrogen deprivation and the NaCl stress stimulated the plasma membrane (PM) H+-ATPase activity and increased pyruvate content. The maximal stimulating effect was found under the-N+NaCl treatment. When the AP capacity was reduced by salicylhydroxamic acid (SHAM, an inhibitor of AP), content of MDA and H2O2 and Na+/K+ ratio dramatically increased, whereas PM H+-ATPase activity decreased. Moreover, exogenous application of pyruvate produced a similar effect as the nitrogen deprivation pretreatment. The effects of SHAM on the Poa annua callus were counteracted by catalase (a H2O2 scavenger) and diphenylene iodonium (a plasma membrane NADPH oxidase inhibitor). Taken together, our results suggest that the nitrogen deprivation enhanced the capacity of AP by increasing pyruvate content, which in turn prevented the Poa annua callus from salt-induced oxidative damages and Na+ over-uptake.
关键词: alternative pathway ; catalase ; H+-ATPase ; in vitro culture ; malondialdehyde ; oxidative stress ; SHAM
作者部门: [Zhao, C. Z. ; Wang, X. M. ; Li, P. ; Wang, X. Y. ; Wang, F. ; Wang, J. F. ; Chang, N. ; Bi, Y. R.] Lanzhou Univ, Sch Life Sci, Minist Educ, Key Lab Cell Act & Stress Adaptat, Lanzhou 730000, Peoples R China ; [Li, P.] North China Elect Power Univ, State Grid Corp, Baoding 071003, Hebei, Peoples R China
通讯作者: Bi, YR (reprint author), Lanzhou Univ, Sch Life Sci, Minist Educ, Key Lab Cell Act & Stress Adaptat, Lanzhou 730000, Peoples R China.
学科分类: Plant Sciences
文章类型: Article
所属项目编号: Major State Basic Research Development Program of China (973 Program) [2012CB026105] ; National High Technology Research and Development Program [2007AA021401] ; Foundation of Science and Technology Program of Lanzhou City [2015-3-53] ; Foundation of Science and Technology Program of Gansu Province [1506RJZA209, 1208RJZA224] ; Scientific research project of Qinghai-Tibetan DC Interconnection Project in State Grid Corporation of China
所属项目名称: 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 国家高技术研究发展计划(863计划) ; 甘肃省自然科学基金计划 ; 兰州市科技局资助项目
项目资助者: MOST ; GSSTD ; LZSTB
语种: 英语
DOI: 10.1007/s10535-016-0626-2
ISSN号: 0006-3134
WOS记录号: WOS:000379514300017
BIOSIS记录号: BCI:BCI201600656204
IR记录号: WOS:000379514300017
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/182053
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Zhao, CZ,Li, P,Wang, XM,et al. Nitrogen deprivation induces cross-tolerance of Poa annua callus to salt stress[J]. BIOLOGIA PLANTARUM,2016,60(3):543-554.
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