|本期目录/Table of Contents|

[1]孙正国.龙葵对镉污染土壤的响应及其修复效应研究[J].江苏农业科学,2015,43(10):397-401.
 Sun Zhengguo.Response of Solanum nigrum to cadmium pollution in soil and its repair effects[J].Jiangsu Agricultural Sciences,2015,43(10):397-401.
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龙葵对镉污染土壤的响应及其修复效应研究(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第43卷
期数:
2015年10期
页码:
397-401
栏目:
资源与环境
出版日期:
2015-10-25

文章信息/Info

Title:
Response of Solanum nigrum to cadmium pollution in soil and its repair effects
作者:
孙正国
南通农业职业技术学院,江苏南通 226007
Author(s):
Sun Zhengguo
关键词:
龙葵镉污染有害物质积累基因表达Real-time PCR光合作用抗氧化酶
Keywords:
-
分类号:
X53
DOI:
-
文献标志码:
A
摘要:
以矿区不同范围内(对照组、市内、矿区周边农田、矿区边缘、矿区和尾矿)土壤为培养基质盆栽重金属超富集植物龙葵(Solanum nigrum),研究其对镉污染土壤修复效应。结果发现:不同样地土壤含镉量不同,土壤中镉含量(Cd >20 mg/kg)递增对龙葵生长和光合作用产生明显负面影响,如生物量递减、光合效率降低。其次,龙葵在镉污染土壤的胁迫下,超氧化物歧化酶(SOD)、过氧化物酶(POD)、丙二醛(MDA)含量增加。此外,土壤中镉含量的增加龙葵中与镉转运有关的基因表达水平也显著增加。以上结果表明,过量的镉对龙葵的生长发育有负面影响,促进植物体有害物质(过氧化物和MDA)的积累,同时龙葵自身也通过合成相关的酶清除体内有害物质,减轻损害,如通过快速合成相关镉转运蛋白,增强龙葵对土壤中镉的吸收和积累,从而减少土壤中镉的含量。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2014-10-10
基金项目:江苏省农业三项工程[编号:SXGC(2012)134]。
作者简介:孙正国(1966—),男,江苏南通人,副教授,研究方向为农业生态。Email:zhengguosun@163.com。
更新日期/Last Update: 2015-10-25