不同环境因子对爪哇伪枝藻分泌胞外多糖的影响  

Effects of Different Environmental Factors on the Extracellular Polysaccharide Exudation of Scytonema javanicum

作　　者：饶本强[1] 张继英[2] 娄亚敏 梅海霞[1] 王艳璐 

机构地区：[1]信阳师范学院生命科学学院,河南信阳464000 [2]信阳农林学院生物技术系,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2015年第4期496-500,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金-河南人才培养联合基金项目(U1404305);河南省科技攻关计划项目(132102210224);河南省基础与前沿计划项目(142300410028);河南省教育厅科学技术研究重点项目(12B210024);河南省教育厅自然科学基础研究计划项目(2010B180026);信阳师范学院大学生科研基金重点项目(2014-DXS-139)

摘　　要：以一种从荒漠土壤中分离的典型丝状蓝藻——爪哇伪枝藻为材料,在实验室条件下研究了温度、盐度、pH和培养时间对爪哇伪枝藻胞外多糖分泌的影响.结果表明:随培养温度升高,伪枝藻胞外多糖分泌量逐渐升高,在35℃时达到最大值;在一定盐度范围内,胞外多糖分泌随盐度的增大而增大;pH在7.5时,胞外多糖产量显著高于酸性和碱性条件下的胞外多糖产量;随着培养时间延长,伪枝藻胞外多糖分泌逐渐增大.A typical desert filamentous canobacteria,Scytonema javanicum,isolated from desert soil,was selected for research material.Under the laboratory conditions,some environmental factors such as temperatures,salinity,pH and culture time were selected for experimental treatments,and detected the effects of the above environmental factors on the extracellular polysaccharide（EPS）exudation of S.javanicum.The results indicated that with the culture temperature increasing,S.javanicumhad higher EPS exudation,and at 35℃the algae obtained the most EPS production.When salinity was between 0.05mol/L NaCl to 2.0mol/L NaCl,the EPS production of S.javanicumincreased with the enhancement of salinity.When the pH of media was maintained at 7.5,there was the highest EPS production for S.javanicumthan the EPS production of algal cells under other treatments of pH.

关 键 词：荒漠藻类 爪哇伪枝藻 胞外多糖 环境因子 

分 类 号：Q949.32[生物学—植物学]