| 胶质芽孢杆菌胞外多糖在肥料矿物分解转化中的作用 |
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| 引用本文： | 周雪莹,李辉,连宾.胶质芽孢杆菌胞外多糖在肥料矿物分解转化中的作用[J].矿物岩石地球化学通报,2010,29(1):63-66. |
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| 作者姓名： | 周雪莹 李辉 连宾 |
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| 作者单位： | 1. 南京市微生物工程技术研究中心,江苏省生物多样性与生物技术重点实验室,南京师范大学,生命科学学院,南京,210046
2. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵阳,550002 |
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| 基金项目： | 国家高技术研究发展项目(2008AA06Z108);;国家自然科学基金资助项目(40773069) |
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| 摘 要： | 本文探讨了胶质芽孢杆菌胞外多糖在细菌分解转化矿物过程中的作用。将事先提取的胞外粗多糖按一定浓度梯度与矿粉混合,24 h后再次提取多糖称重,证实多糖与矿粉颗粒之间的吸附现象。计算结果表明,矿粉对多糖的吸附随多糖量的增加而呈较明显的增长,之后增幅逐渐趋于平缓。在无氮培养基中添加不同种类矿粉培养细菌,然后分别提取粗多糖和较纯多糖,发现矿物种类对胶质芽孢杆菌多糖的分泌有显著影响。添加含有细菌所需矿质养料的矿粉在培养液中,胞外多糖含量相对增高,说明细菌分泌胞外多糖受到矿物化学组成的影响,即细菌胞外多糖的产生与它们对矿物养料的需求和矿物的风化过程有密切联系。
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| 关 键 词： | 胶质芽孢杆菌 胞外多糖 矿物风化 |
Effect of Exo-Polysaccharides Produced by Bacillus Mucilaginosus During the Process of Fertilizer Mineral Degradation and Transformation |
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| ZHOU Xue-ying,LI Hui,LIAN Bin.Effect of Exo-Polysaccharides Produced by Bacillus Mucilaginosus During the Process of Fertilizer Mineral Degradation and Transformation[J].Bulletin of Mineralogy Petrology and Geochemistry,2010,29(1):63-66. |
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| Authors: | ZHOU Xue-ying LI Hui LIAN Bin |
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| Institution: | ZHOU Xue-ying1,LI Hui1,LIAN Bin21.Nanjing Engineering , Technology Research Center for Microbiology,Jiangsu Key Lab for Biodiversity , Biotechnology.College of Life Science,Nanjing Normal University,Nanjing 210046,China,2.State Key Laboratory of Environmental Geochemistry,Institute of Geochemisty,Chinese Academy of Sciences,Guiyang 550002 |
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| Abstract: | In this paper,we studied the function of capsular polysaccharides secreted by Bacillus mucilaginosus in the process of mineral decomposition.Crude capsular polysaccharides were extracted and then different concentrations of polysaccharide were mixed with mineral powder.After 24 hours,polysaccharides were extracted again and weighed.The results indicated that polysaccharides can be sorbed on the mineral,and that the sorption amount increased rapidly at first and gently in late with increasing of polysacchari... |
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| Keywords: | Bacillus mucilaginosus polysaccharides mineral weathering |
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