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学科主题: 物理化学
题名: Alginate oligosaccharides regulate nitrogen metabolism via calcium in Brassica campestris L. var. utilis Tsen et Lee
作者: Zhang, Y. H.1;  Yin, H.1;  Liu, H.1;  Wang, W. X.1;  Wu, L. S.2;  Zhao, X. M.1;  Du, Y. G.1
通讯作者: 杜昱光
刊名: JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY
发表日期: 2013-07-01
卷: 88, 期:4, 页:502-508
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 18
项目归属: 1805
产权排名: 待补充
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Horticulture
资助者: 1,1
研究领域[WOS]: Agriculture
英文摘要: Hydroponic culture experiments were conducted to study the mechanism by which alginate oligosaccharides (AOS) regulate nitrogen (N) metabolism in flowering Chinese cabbage (Brassica campestris L. var. utilis Tsen et Lee). Enzyme activities involved in N-metabolism [e.g., nitrate reductase (NR), glutamine synthetase (GS), and glutamate synthetase (GOGAT)] can be activated by calcium ions (Ca2+), but whether AOS also regulate N-metabolism via Ca2+ ions is still not clear. In this study, several inhibitors of Ca2+ ion metabolism [e.g. ethyleneglycol-bis-(2-aminoethylether)-tetraacetic acid (EGTA), verapamil, chlorpromazine, or ruthenium red] were added separately to the nutrient solution. As a result, the total-N concentrations in leaves decreased by 15.0 - 44.5%, and the activities of NR and GS in Chinese cabbage leaves were reduced by 2.8 - 14.5% and by 32.6 - 73.5%, respectively. This resulted in a decrease in plant yield [i.e, the fresh weights (FWs) of shoots] of between 4.4 - 27.2% compared to leaves following an AOS-only treatment. The sub-cellular distribution of Ca2+ ions suggested that the increase in cytosolic Ca2+ concentration required to activate N-metabolism, caused by AOS, may be due primarily to an influx of extracellular Ca2+ rather than the release of cytosolic Ca2+ ions. These preliminary results confirm that Ca2+ ions are involved in the regulation of N-metabolism in flowering Chinese cabbage which can be induced by exogenous AOS.
关键词[WOS]: GROWTH-PROMOTING ACTIVITY ;  PLASMA-MEMBRANE ;  CELL CALCIUM ;  PLANTS ;  BINDING ;  PROTEIN ;  OLIGOGALACTURONIDES ;  PURIFICATION ;  TOLERANCE ;  ELICITOR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000322941900021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119097
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Huazhong Agr Univ, Microelement Res Ctr, Wuhan 430070, Peoples R China

Recommended Citation:
Zhang, Y. H.,Yin, H.,Liu, H.,et al. Alginate oligosaccharides regulate nitrogen metabolism via calcium in Brassica campestris L. var. utilis Tsen et Lee[J]. JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY,2013,88(4):502-508.
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