赵聪;谢水波;李仕友;魏庆鹏;

• 1:南华大学污染控制与资源化技术湖南省高校重点实验室
• 2:南华大学铀矿冶生物技术国防重点学科实验室

摘要(Abstract)：

采用水培方式研究了不同质量浓度(0、0.1 mg/L、1 mg/L、5mg/L、10 mg/L、20 mg/L)铀胁迫下香根草光合色素质量比、可溶性蛋白质质量比、丙二醛(MDA)含量、抗氧化酶(超氧化物歧化酶SOD、过氧化物酶POD、过氧化氢酶CAT)活性、非酶物质(非蛋白巯基NPT、谷胱甘肽GSH和植物络合素PCs)含量的变化。结果表明,铀质量浓度为0.1 mg/L和1 mg/L时,可促进香根草光合色素和可溶性蛋白质质量比的增加,但随铀质量浓度增加,光合色素和可溶性蛋白质质量比逐渐下降。铀胁迫诱导香根草体内MDA含量、POD活性和CAT活性呈明显升高的趋势,SOD活性则表现为逐渐下降的趋势。不同质量浓度铀胁迫对香根草根部NPT、GSH和PCs含量无明显影响,铀质量浓度为0.1 mg/L时香根草根部NPT、GSH和PCs含量略有增加;随铀胁迫质量浓度增加,叶片内GSH含量逐渐下降,NPT和PCs含量则逐渐升高。

关键词(KeyWords)： 环境工程学;香根草;铀浓度;抗氧化酶;植物络合素

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(11175081);; 湖南省科技计划重点项目(2011SK2015);; 湖南省高校创新平台开放基金项目(13K085,13K086)

作者(Authors): 赵聪;谢水波;李仕友;魏庆鹏;

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