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外源5氨基乙酰丙酸对盐胁迫下决明幼苗生理特性的影响(PDF)

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2013年01期
页码:
102
栏目:
植物生理与分子生物学
出版日期:
2013-01-25

文章信息/Info

Title:
Effects of ALA on physiological characteristics of Cassia obtusifolia seedlings under salt stress
作者:
谢英赞12 何平12* 韦品祥12 刘海英12 段才绪12 胡兵12
1.西南大学 生命科学学院 三峡库区生态环境教育部重点实验室, 重庆 400715; 2.重庆市三峡库区 植物生态与资源重点实验室, 重庆 400715
Author(s):
XIE YingZan12 HE Ping12* WEI PinXiang12 LIU HaiYing12 DUAN CaiXu12 HU Bing12
1.Key Laboratory (Ministry of Education) of Ecoenvironments of Three Gorges Reservoir Region,School of Life Sciences, Southwest University, Chongqing 400715, China; 2.Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, Chongqing 400715, China
关键词:
决明 外源5氨基乙酰丙酸 盐胁迫 生理特性
Keywords:
Cassia obtusifolia ALA salt stress physiological characteristics
分类号:
Q945
DOI:
10.3969/j.issn.1000-3142.2013.01.018
文献标识码:
A
摘要:
为寻找提升决明幼苗耐盐性的方法,测量了不同处理下决明幼苗叶片的光合色素、超氧阴离子、丙二醛的含量,以及保护酶系统中SOD、POD、CAT的活性。结果表明,经150 mmol?L1 NaCl处理,决明幼苗叶片的光合色素含量显著降低,而超氧阴离子、丙二醛的含量以及保护酶SOD、POD、CAT的活性显著升高。不同浓度的外源5氨基乙酰丙酸在不同程度上增加了决明幼苗叶片的叶绿素、类胡萝卜素含量,进一步增强了保护〖JP2〗酶SOD、POD、CAT的活性,降低了超氧阴离子、丙二醛的含量。在外源5氨基乙酰丙酸浓度为50 mg?L1时,恢复效果最为明显(80.0 、196.4 和 114.1 U?g1),有效地缓解了盐胁迫对决明幼苗的伤害。
Abstract:
In order to get the method to improve the salt resistance of seedlings for Cassia obtusifolia under salt stress,physiological characteristics of C.obtusifolia seedlings were studied. Several physiological indexes of C.obtusifolia seedlings under salt stress like photosynthetic pigment,superoxide anion(O〖ST4.〗2〖HT〗.),malondialdehyde(MDA),superoxide(SOD),peroxidase(POD) and catalase(CAT) were measured. The rate of decrease was relieved and the content of O〖ST4.〗2〖HT〗.,MDA decreased. The activities of three enzymes including SOD,POD and CAT were increased by the treatment of ALA,and reached the maximin(80.0 U?g1,196.4 U?g1 and 114.1 U?g1 respectively)with the concentration of 50 mg?L1. ALA with concentration of 50 mg?L1 could significantly alleviate the damages to the seedlings of C.obtusifolia under salt stress,and promote the salt resistance of the seedlings.

参考文献/References

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2013-01-25