河南农业大学学报2017，Vol.51Issue(3)：330-334,5.
狼尾草对铬的积累及其抗氧化特性研究
Accumulation and antioxidant properties of chromium stress in Pennisetum alopecuroides
摘要
Abstract
Enzymes are special proteins involved in biochemical reactions in the plant body.Through study on the response of plant enzyme protection system to heavy metals stress,the adversity tolerance of plants for heavy metal elements can be better visualized.Therefore under the different Cr6+ stress intensity (0,300,600,900,1 200,1 500 mg · kg-1),using pot experiment,and the antioxidant enzyme activity POD,SOD,CAT as the index of observation,the Pennisetum alopecuroides enrichment and transfer coefficient of heavy metals of Cr6 + enrichment coefficient was determined,and on this basis,research was conducted on the change trend of some physiological and biochemical indexes and mechanism of Pennisetum alopecuroides under Cr6+ stress.The results showed that with the increase of mass concentration Cr6+ stress,Pennisetum alopecuroides POD enzyme activity was rised,SOD and CAT enzyme activity first increased and then decreased.It reached the highest level when the Cr6+ concentration was at 300 mg · kg-1 Meanwhile,under different concentrations of stress,the Pennisetum alopecuroides enrichment coefficient of Cr6 + was all higher than 0.8,and the transfer coefficient was all higher than 0.6.The results showed that Pennisetum alopecuroides has a good ability of enrichment and transformation of Cr6 + But at a high concentration level,the enzyme activity is generally suppressed,and the growth of the Pennisetum alopecuroides can be significantly stressed,even to death.关键词
狼尾草/Cr6+胁迫/酶活性/转运系数/富集系数Key words
Pennisetum alopecuroides/Cr6+ stress/enzyme activity/transport coefficient/enrichment coefficient分类
资源环境引用本文复制引用
朱秀红,侯国栋,茹广欣,张龙冲,吴晓娜,刘国强..狼尾草对铬的积累及其抗氧化特性研究[J].河南农业大学学报,2017,51(3):330-334,5.基金项目
国家科技支撑计划专题(2013BAD01B06) （2013BAD01B06）
国家大学生创新创业训练计划(1402103020) （1402103020）
