干旱区生态环境知识资源中心(Arid): 发芽前后和Pb~(2+)胁迫下两种沙冬青幼苗内源激素含量的比较分析

Arid

	发芽前后和Pb~(2+)胁迫下两种沙冬青幼苗内源激素含量的比较分析
其他题名	Comparative Analysis of Endogenous Hormones between Two Species of Ammopiptanthus Seedlings around Germination and under Pb~(2+) Stress
	郑春霞; 陈波浪; 贾宏涛; 盛建东; 潘新燕
来源期刊	光谱学与光谱分析
ISSN	1000-0593
出版年	2010
卷号	30 期号:3 页码:820-824
中文摘要	利用原子发射光谱和高效液相色谱系统地分析研究了内蒙沙冬青(Ammopiptanthus mongolicus (Maxim.)Chengf.)和新疆沙冬青(A.nanus(M Pop.)Chengf.)(韦思奇,1998)发芽前和发芽后赤霉素(GA_3)、生长素(IAA)、脱落酸(ABA)3种内源激素的变化和不同浓度Pb~(2+)胁迫对沙冬青内源激素的影响.研究发现:(1)发芽后比发芽前新疆沙冬青IAA含量降低率为77.80%,ABA含量降低率为98.90%;蒙古沙冬青IAA含量降低率为75.80%,ABA含量降低率为66.20%;2种沙冬青发芽前后GA_3含量变化不大.(2)随Pb~(2+)浓度的提高(20～1 500 mg·L~(-1)),IAA含量降低十分显著,高浓度(大于1 000 mg·L~(-1))Pb~(2+)胁迫对GA_3含量才有影响,ABA含量没有规律性的变化;在Pb~(2+)胁迫下,蒙占沙冬青中3种内源激素含量均高于新疆沙冬青.(3)沙冬青幼苗中Pb~(2+)分布特征均为根＞茎＞叶.(4)高浓度Pb~(2+)胁迫对沙冬青叶片细胞产生了不可逆的伤害.研究结果为进一步研究荒漠地区特有的常绿阔叶灌木沙冬青的生长特征和抗逆机制提供了可参考的依据.
英文摘要	The changes in three endogenous hormones,phytohormones gibberrelic acid (GA_3),indoles-3-acid (IAA) and abscisic acid (ABA),were studied around germination and under tress of different density of Pb~(2+) between two species of Ammopiptanathus.It was found that (1) around germination,in Xinjiang Ammopiptanthus the rate IAA decreased 77.80%,and the rate of ABA decreased 98.90%;and in Mongolia Ammopiptanthus the rate of IAA decreased 75.80%,the rate of ABA decreased 66.20%,and the GA_3 contents in both had no big change.(2) With the increase in Pb~(2+) concentration (20-1 500 mg·L~(-1)),the IAA decreased significantly;and only under the high density (more than 1 000 mg·L~(-1)) of Pb~(2+),the GA_3 was affected by it;the ABA did not change regularly.So the three endogenous hormone levels of Mongolia Ammopiptanthus were higher than those of Xinjiang Ammopiptanthus.(3)the distributions of Pb~(2+) in Ammopiptanthus seedlings are the root＞stems＞leaves.(4) the stress of high concentration of Pb~(2+) damages irreversibly the leaf cells of Ammopiptanthus.This study can provide the basis of reference data for further research on the growth characteristics,resilience and the mechanism of specific broadleaved evergreen shrubs-Amrnopiptanthus in desertification area.
中文关键词	沙冬青 ; 内源激素
英文关键词	Pb~(2+) Ammopiptanthus Pb~(2+) Hormone
语种	中文
国家	中国
收录类别	CSCD
WOS类目	CHEMISTRY ANALYTICAL
WOS研究方向	Chemistry
CSCD记录号	CSCD:3830467
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225249
作者单位	新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	郑春霞,陈波浪,贾宏涛,等. 发芽前后和Pb~(2+)胁迫下两种沙冬青幼苗内源激素含量的比较分析[J]. 新疆农业大学,2010,30(3):820-824.
APA	郑春霞,陈波浪,贾宏涛,盛建东,&潘新燕.(2010).发芽前后和Pb~(2+)胁迫下两种沙冬青幼苗内源激素含量的比较分析.光谱学与光谱分析,30(3),820-824.
MLA	郑春霞,et al."发芽前后和Pb~(2+)胁迫下两种沙冬青幼苗内源激素含量的比较分析".光谱学与光谱分析 30.3(2010):820-824.