干旱区生态环境知识资源中心(Arid): NaCl胁迫下沙枣幼苗的离子代谢特性

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	NaCl胁迫下沙枣幼苗的离子代谢特性
其他题名	Study on Ion Metabolism Characteristics of Elaeagnus angustifolia Seedlings under NaCl Stress
	杨升; 张华新; 刘涛; 武海雯; 杨秀艳; 倪建伟; 陈秋夏
来源期刊	林业科学研究
ISSN	1001-1498
出版年	2016
卷号	29 期号:1 页码:140-146
中文摘要	沙枣(Elaeagnus angustifolia L.)是胡颓子科(Elaeagnaceae)胡颓子属(Elaeagnus Lnn.)的落叶小乔木,主要分布于我国西北五省,在新疆塔里木河、玛纳斯河、甘肃疏勒河、内蒙古的额济纳河两岸有天的沙枣林分布,在北京、天津和山东等地也开展了引种栽培。沙枣的果实、叶片、花和种子等在食品加工、药物提炼和饲用开发等领域具有较高的价值,沙枣木材也是高级家具和工艺品制作的良材;同时,沙枣具有耐旱、耐盐碱和抗风沙的特性,并且沙枣根系上有固氮根瘤菌,能提高土壤肥力,改善土壤环境,因此,沙枣已经被列为半干旱地区和盐土地防护林带的重要树种。
英文摘要	[Objective]To further understand the ion metabolism characteristics of Elaeagnus angustifolia L. under NaCl stress.[Method]The seedlings of two E. angustifolia L. provenances,which were Alaer (salt tolerance provenance) and Yinchuan (salt sensitive provenance), were treated by three NaCl concentrations (0, 150, 300 mmol· L-1) and sampled at the 7th day and the 30th day to measure the Na~+, K~+, Ca~(2 +), and Mg~(2 +) contents,K~+ /Na~+ ratio and selective absorption and transportation of K~+ in tissues (roots,stems and leaves). [Result]The results showed that the Na~+ content in the organizations of E. angustifolia L. sharply increased with the increase of NaCl concentration. With prolonging of stress time,the Na~+ content increased in roots,and decreased in stems and leaves. After seedlings of the two provenances were treated with 150 mmol·L-1 NaCl for 7 days,the Na~+ content was 2.10 times and 2.23 times in leaves,respectively,compared with the control groups,and was 1.79 times and 1.57 times in root. Meanwhile,the difference between two provenances showed a expanding trend with the increase of NaCl concentration and stress time. With the increase of NaCl concentration and extension of stress time,the K~+ content,Ca~(2 +) content and K~+ /Na~+ ratio in organizations decreased gradually. Meanwhile,the Alaer provenance seedlings accumulated more Na~+ in roots and less Na~+ in leaves than that of Yinchuan provenance,and the K~+ content, Ca~(2 +) content and K~+ /Na~+ ratio decreased less in the Alaer provenance seedlings than those of Yinchuan provenance. With the increase of NaCl concentration,the Mg~(2 +) content in leaf gradually decrease,but the Mg~(2 +) content in root increased 22.8 64.4% after salt stress for 7 days,and Alaer provenance seedlings increased more than Yinchuan provenance. After 30 days,there was non-significant difference with the control group on the Mg~(2 +) content of root. K~+ selective absorption of E. angustifolia L. seedlings significantly increased with increasing salt concentration of the media at the 7th days,whereas not obvious at the 30th days. When the concentration of NaCl in the media increased,the change of K~+ selective transportation was not significant. [Conclusion]E. angustifolia L. seedlings increase Mg~(2 +) content and K~+ selective absorption in the roots at the early stage of salt stress to adapt sa- line environment. The salt-tolerance E. angustifolia L. provenance can cut off more Na~+ in roots and reduce Na~+ content in leaves,which cause less K~+, Ca~(2 +) and Mg~(2 +) contents loss,especially the roots and leaves,so as to ensure that all kinds of metabolisms can go well.
中文关键词	沙枣 ; NaCl胁迫 ; 离子代谢 ; 种源
英文关键词	Elaeagnus angustifolia NaCl stress ion metabolism provenance
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:5661150
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378873
作者单位	杨升, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 张华新, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 刘涛, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 武海雯, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 杨秀艳, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 倪建伟, 国家林业局盐碱地研究中心, 北京 100091, 中国.; 陈秋夏, 浙江省亚热带作物研究所, 温州, 浙江 325005, 中国.
推荐引用方式 GB/T 7714	杨升,张华新,刘涛,等. NaCl胁迫下沙枣幼苗的离子代谢特性[J],2016,29(1):140-146.
APA	杨升.,张华新.,刘涛.,武海雯.,杨秀艳.,...&陈秋夏.(2016).NaCl胁迫下沙枣幼苗的离子代谢特性.林业科学研究,29(1),140-146.
MLA	杨升,et al."NaCl胁迫下沙枣幼苗的离子代谢特性".林业科学研究 29.1(2016):140-146.