胜利油田外排水中铁细菌主要类群的检测及群落结构分析

被引:7
作者
赵桂芳
吴晓磊
曾景海
李佳
钱易
机构
[1] 清华大学环境科学与工程系/环境模拟与污染控制国家重点实验室/环境生物技术中心
关键词
荧光原位杂交(FISH); 铁细菌; 基因探针; 群落结构; 绝迹稀释法;
D O I
暂无
中图分类号
Q938 [微生物生态学和地区分布];
学科分类号
071005 ; 100705 ;
摘要
根据油田外排水中常见铁细菌的16SrRNA特异性保守序列,设计和合成了4种荧光探针,利用荧光原位杂交方法,分别利用它们对胜利油田孤岛采油厂、胜利采油厂1号和2号综合处理站外排水中存在的铁细菌的种类和数量进行检测,分析了各外排水中铁细菌的群落结构.结果表明,利用基因探针能快速对胜利油田外排水中的铁细菌进行检测:在孤岛采油厂、胜利采油厂1号和2号综合处理站的外排水中,利用4种探针的组合探针检测到的铁细菌细胞数量分别占样品中微生物总细胞数量的11.0%、12.8%和9.0%,其中Leptothrix和Sphaerotilus,以及Leptospirillum fer-riphilum为胜利油田外排水中的3种优势铁细菌,分别占水样中总微生物细胞数的2.94%±0.52%3.39%±0.52%和2.24%±0.16%2.63%±0.49%;而Leptospirillum ferrooxidans和Acidithiobacillusspp.的种群则较小.3个污水处理站中铁细菌群落结构差异较大,而多样性相差不大.利用4种探针的各种组合对外排水中铁细菌的检测表明,单探针能够很好地分析外排水中铁细菌的群落结构,而组合探针能快速、较准确地检测外排水中铁细菌的数量,比传统的绝迹稀释法具有快速、准确、直观等优点.图1表5参14
引用
收藏
页码:828 / 832
页数:5
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