Na_2CO_3胁迫下星星草幼苗活性氧及保护酶活性的变化  

Changes of defensive enzymes and active oxygen of Puccinellia tenuiflora seedlings under Na_2CO_3 stress

作　　者：高红明[1] 吴晓霞[1] 张彪[1] 张毅[1] 徐平[1] 孙国荣[1] 

机构地区：[1]扬州大学生物科学与技术学院,扬州225009

出　　处：《植物研究》2006年第3期308-312,共5页Bulletin of Botanical Research

基　　金：国家自然科学基金项目(30270234)

摘　　要：对低浓度Na2CO3胁迫下星星草幼苗相对电导率、O2.—产生速率、H2O2含量以及保护酶CAT、SOD和POD活性的研究结果表明,低盐胁迫1 d后,星星草幼苗细胞膜的通透性、O2.—产生速率、H2O2含量及保护酶活性都随着盐胁迫的加剧而升高,其具体的变化规律与盐胁迫强度和幼苗细胞膜的受损伤程度密切相关,但相关关系的性质上具有差异。The study concerns with the relative electric conductance, 02 produce-rate, H2O2 content, and SOD, POD and CAT activity of P. tenuiflora seedlings stressed by 0 - 1.0% Na2C03 for ld. The results showed that the cell membrane, O^-2 produce-rate, H2O2 content, defensive enzymes activity are increased along with the prick up of low density salt stress, but specific change rule of that is relevant to the saline stress intensity and to the extent of the plasma membrane of seedlings was harmed, and the character of the relationship is different.

关 键 词：星星草 相对电导率 O^-2产生速率 H2O2含量 保护酶活性 

分 类 号：Q945.78[生物学—植物学] S543.901[农业科学—作物学]