[1]曹继敏,何德*. 铅胁迫后旱柳无性系3种抗氧化酶的变化分析[J].西北林学院学报,2020,35(4):7-12.[doi:10.3969/j.issn.1001-7461.2020.04.02]
 CAO Ji-min,HE De*. Variations of Three Antioxidant Enzymes of Salix matsudana Seedlings under Lead Stress[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(4):7-12.[doi:10.3969/j.issn.1001-7461.2020.04.02]
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 铅胁迫后旱柳无性系3种抗氧化酶的变化分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第4期
页码:
7-12
栏目:
出版日期:
2020-09-29

文章信息/Info

Title:
 Variations of Three Antioxidant Enzymes of Salix matsudana Seedlings under Lead Stress
文章编号:
1001-7461(2020)04-0007-06
作者:
 曹继敏何德*
 (西南林业大学 生命科学学院,云南 昆明 650224)
Author(s):
 CAO Ji-minHE De*
 (College of Life Sciences,Southwest Forestry University,Kunming 650224,Yunnan,China)
关键词:
 旱柳铅胁迫SODPODCAT
Keywords:
Salix matsudana lead stress SOD POD CAT
分类号:
S792.12
DOI:
10.3969/j.issn.1001-7461.2020.04.02
文献标志码:
A
摘要:
 为探究旱柳对铅胁迫的耐受性,以同一株旱柳的无性系为材料,探究在土壤铅浓度0、500、800、1 000、1 200、1 500、1 800、2 000 mg/kg情况下不同时期旱柳叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的酶活生理变化。结果表明,旱柳无性系在短期内就可以对铅胁迫作出反应。随着土壤铅胁迫浓度的增加,旱柳叶片中的SOD、POD、CAT活性均是先升后降的变化趋势。800 mg/kg的土壤铅胁迫浓度下旱柳叶片表现出最佳的耐受性,其SOD、POD、CAT活性基本达到最大,分别为1 516.3 u/g、6 158.93、90.66 u/g·min;1 800 mg/kg为旱柳无性系的耐受限度;2 000 mg/kg超越旱柳无性系自身耐受能力。以上结果表明,旱柳无性系对铅有很强的耐受性和具有修复铅造成污染的潜力。
Abstract:
 In order to understand the tolerance of Salix matsudana to lead stress,seedlings bred from the same S.matsudana tree were cultured in potted soils with different lead contents (0,500,800,1000,1 200,1 500,1 800 mg/kg and 2 000 mg/kg)to study the physiological variations of the enzyme activities in the leaves,including SOD,POD,and CAT.The results showed that S.matsudana could respond to the lead stress in a short time.The activities of three enzymes increased first and then decreased with the increase of the lead content in soils.The best tolerance ability appeared when the soil lead content was 800 mg/kg,manifested by the maximum values of SOD,POD and CAT activities:1 516.3 u/g,6 158.93 u/g·min and 90.66 u/g·min,respectively.The tolerance limitation was 1 800 mg/kg,and when the soil lead content was 2 000 mg/kg,it surpassed the capacity of the self-tolerance of S.matsudana.These results indicated that S.matsudana had strong tolerance to lead and high potential for remediation of lead contamination.

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备注/Memo

备注/Memo:
 收稿日期:2019-11-06修回日期:2019-12-09
基金项目:国家自然科学基金(31260041);云南省优势特色重点学科生物学一级学科建设项目(50097505);云南省高校林下生物资源保护及利用科技创新(51400605)。
作者简介:曹继敏。研究方向:植物抗逆性。E-mail:765493003@qq.com
*通信作者:何德,博士,副教授。研究方向:分子细胞生物学。E-mail:1419615009@qq.com
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