干旱区生态环境知识资源中心(Arid): 荒漠地区两种生态型芦苇叶片的抗氧化生理特性分析

Arid

	荒漠地区两种生态型芦苇叶片的抗氧化生理特性分析
其他题名	Leaf Anti-oxidative Physiology of Two Ecotypes of Reed in the Desert Regions,China
	刘玉冰; 李新荣; 谭会娟; 李小军
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2011
卷号	31 期号:2 页码:277-281
中文摘要	以生长于腾格里沙漠南缘的沙丘芦苇(沙芦,DR)和戈壁盐湖芦苇(盐芦,GSR)为研究对象,以水生芦苇 (SR)为对照材料,研究荒漠地区两种生态型芦苇在各自自然生境下改变体内还原状态的抗氧化机制.结果表明,沙芦和盐芦的脂质过氧化水平高于水芦,过氧化氢和一氧化氮含量也高,类胡萝卜素与叶绿素的比率增加,且盐芦高于沙芦.这表明沙芦和盐芦的体内氧化水平高于水芦,盐芦的氧化程度更高.抗氧化系统酶活性的响应分析表明,沙芦和盐芦叶片中总抗氧化能力大于水芦,超氧化物歧化酶、抗坏血酸过氧化物酶和一氧化氮合酶活性也高于水芦,但过氧化氢酶和谷胱甘肽还原酶活性没有明显的差异,而过氧化物酶活性却比水芦低.与质膜渗透调节能力相关的Na~+/K~+ -ATP酶和Ca~(2+)/Mg~(2+) -ATP酶活性在盐芦中明显高于沙芦和水芦.这表明芦苇在干旱和盐渍条件下忍受诱导的次级氧化胁迫的能力提高
英文摘要	The aim of the present study is to investigate the anti-oxidative physiology in cellular redox environment of two ecotypes of reed (Phragmites communis Trin.)inhabiting in the desert region of China. Dune reed (DR) and Gobi salt reed (GSR) are selected from the Tengger Desert of northwest China,and the swamp reed (SR)is selected as control. The results indicate that the level of lipid peroxidation,the contents of hydrogen peroxide and nitric oxide and the ratio of carotenoids/chlorophyll are high in DR and GSR,and the levels in GSR are higher than in DR. It indicates that there is a high level of oxidation in GSR and DR, especially in GSR. The antioxidant defense system analysis show that DR and GSR possess higher activities of superoxide dismutase,ascorbate peroxidase and nitric oxide synthase than SR; Compared with SR,there is no significant differences in the activities of catalase and glutathione reductase for DR and GSR,and activity of peroxidase in DR and GSR is obviously lower than those in SR.Na~+/K~+ -ATPase and Ca~(2+)/Mg~(2+) -AT-Pase,which relate to the ability of osmotic regulation of membrane,show a higher activities in GSR than those in DR and SR. These results suggest that the adaptation to saline or drought of common reed contributes to the high resistance to the oxidative stress related to apperceive environmental conditions
中文关键词	荒漠植物 ; 芦苇 ; 生态型 ; 抗氧化生理
英文关键词	desert plant reed (Phragmites communis Trin.) ecotype anti-oxidative physiology
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4157918
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227486
作者单位	中国科学院寒区旱区环境与工程研究所植物逆境生理生态与生物技术实验室/沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘玉冰,李新荣,谭会娟,等. 荒漠地区两种生态型芦苇叶片的抗氧化生理特性分析[J]. 中国科学院西北生态环境资源研究院,2011,31(2):277-281.
APA	刘玉冰,李新荣,谭会娟,&李小军.(2011).荒漠地区两种生态型芦苇叶片的抗氧化生理特性分析.中国沙漠,31(2),277-281.
MLA	刘玉冰,et al."荒漠地区两种生态型芦苇叶片的抗氧化生理特性分析".中国沙漠 31.2(2011):277-281.