[1]党青,韩刚,孙德祥,等.干旱胁迫下杨柴的抗氧化防御系统研究[J].西北林学院学报,2008,23(04):1.
 DANG Qing,HAN Gang,SUN De xiang,et al.Antioxidation Defence System of Hedysarum mongolicum Turcz. under Drought Stress[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2008,23(04):1.
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干旱胁迫下杨柴的抗氧化防御系统研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第23卷
期数:
2008年04期
页码:
1
栏目:
森林生物、生理、生态、植物、气象等
出版日期:
2008-07-30

文章信息/Info

Title:
Antioxidation Defence System of Hedysarum mongolicum Turcz. under Drought Stress
作者:
党青韩刚孙德祥
1. 西北农林科技大学 林学院,陕西 杨陵 712100;2. 杨凌职业技术学院 ,陕西 杨陵 712100
Author(s):
DANG Qing1HAN Gang1SUN Dexiang2ZHAO Zhong1*
1. College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China; 2. Yangling Vocational and Technical College, Yangling, Shaanxi 712100, China
关键词:
干旱胁迫杨柴抗氧化防御
Keywords:
drought stress Hedysarum mongolicum Turcz. antioxidation defence
分类号:
S718.43
文献标志码:
A
摘要:
研究了不同程度干旱胁迫下杨柴苗抗氧化防御系统的多种重要保护酶及物质的变化。结果显示:中度干旱胁迫下30 d时,杨柴苗POD、CAT及APX活性升高,ASA、GSH含量增加,未受到氧化伤害,至60~90 d,仍具有较高的CAT、APX活性及ASA、GSH含量,虽然此期已发生了氧化伤害,基本保持稳定。重度干旱胁迫下30 d起,杨柴苗就已发生了氧化伤害,此期POD、CAT及APX活性升高,ASA、GSH含量增加,表现出较强的抗氧化能力,使胁迫至60 d时氧化伤害未继续扩大,但至90 d时,持续重度干旱造成抗氧化防御机构的损伤。旱逆境下杨柴苗的POD、CAT、APX、ASA及GSH在抗氧化防御中显示出重要作用。
Abstract:
Some important protective enzymes and substances of Hedysarum mongolicum Turcz. seedlings related to antioxidation defence system were studied at the different degrees drought srtess. The results showed that under medium drought strees for 30 days the activities of POD, CAT and APX and the contents of ASA and GSH of the seedlings increased. The oxygenation injury did not happen on the seedlings. During 60 to 90 days, the oxygenation injury happended on seedlings and kept stable. Seedlings kept high CAT and APX activities and high contents of ASA and GSH in this period. Under severe drought stress, the oxygenation injury happended on seedlings from 30th day. But till 60th day the oxygenation injury did not increased because the POD, CAT and APX activities and the contents of ASA and GSH of the seedlings increased. Till 90th day the antioxidation defence mechanism was damaged due to continued drought. It was concluded that activities of POD,CAT,APX and contents of ASA and GSH of showed important function under drought adversity.

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备注/Memo

备注/Memo:
收稿日期:20071228修回日期:20080408 基金项目: 国家林业局重点科研项目(2003066L66);大学生科技创新项目(2006182)。作者简介:党青,男,讲师,在读硕士,主要从事旱区森林培育及林木抗旱生理研究。
更新日期/Last Update: 2008-07-30