La3+对盐胁迫下钝顶节旋藻色素含量及抗氧化酶活性的影响  

Effects of La3+ on the Pigment Content and Antioxidant Enzyme Activity of Arthrospira Platensis under Salt Stress

作　　者：巩东辉 王志忠 季祥 司万童 贾晋 李春霞 GONG Dong-hui;WANG Zhi-zhong;JI Xiang;SI Wan-tong;JIA Jin;LI Chun-xia(School of Life Science and Technology,Inner Mongolia University of Science and Technology,Baotou 014010,China;Spirulina Engineering Research Center of Etuoke Banner,Ordos 016100,China;Baogang No 1 High School,Baotou 014010,China)

机构地区：[1]内蒙古科技大学生命科学与技术学院,内蒙古包头014010 [2]鄂托克旗螺旋藻工程技术研究中心,内蒙古鄂尔多斯016100 [3]包钢一中,内蒙古包头014010

出　　处：《稀土》2018年第4期55-60,共6页Chinese Rare Earths

基　　金：国家自然科学基金(31660151;41666007);内蒙古自然科学基金项目(2016MS0334);内蒙古科技大学创新基金

摘　　要：以内蒙古高原碱湖土著钝顶节旋藻为实验材料,用0.3 mol/L的Na Cl进行盐胁迫处理,研究了盐胁迫处理条件下不同浓度La3＋对节旋藻生长速率,叶绿素a、类胡萝卜素含量以及抗氧化酶活性的影响。结果表明：La3＋处理浓度为24.75μmol/L^40.98μmol/L处理4 d后,CAT、POD活性明显增强（P〈0.05）;处理10 d,La3＋处理浓度为8.31μmol/L^40.98μmol/L可促进节旋藻叶绿素a的合成,24.75μmol/L^57.01μmol/L处理组类胡萝卜素含量最高;不同La3＋浓度处理组藻细胞的生长速率差异不显著（P〉0.05）。The effects of La3＋on the growth rate,content of pigment and activity of antioxidant enzyme of Arthrospira in the Alkali lake of Erdos Plateau under 0. 3 mol/L Na Cl stress were studied by the physiological method. The results showed that the activities of CAT and POD enhanced when the concentration of La3＋was 25 ~ 41 μmol/L treated for 4 d（ P〈 0. 05）; the concentration of La3＋8 ~ 41 μmol/L could promote the content of chlorophyll a,and the content of carotenoid was the highest when the concentration of La3＋was 25 ~ 41 μmol/L treated for 10 d; the difference of growth rate between different treatment group was not remarkable（ P 〉0. 05）.

关 键 词：节旋藻 盐胁迫 La3+ CAT POD 

分 类 号：Q945.11[生物学—植物学]