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胜利油田滩涂区石油降解菌的筛选、鉴定及其多样性分析

韩平1;郑立1;崔志松1;郭秀春1,2;田黎1   

  1. 1国家海洋局第一海洋研究所海洋生态中心, 山东青岛 266061;2中国海洋大学化学化工学院, 山东青岛 266100
  • 收稿日期:2008-10-08 修回日期:1900-01-01 出版日期:2009-05-20 发布日期:2009-05-20

Isolation, identification and diversity analysis of petroleum-degrading bacteria in Shengli Oil Field wetland soil.

HAN Ping1;ZHENG Li1;CUI Zhi-song1;GUO Xiu-chun1,2;TIAN Li1   

  1. 1Research Centre for Marine Ecology, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, Shandong, China;2College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China
  • Received:2008-10-08 Revised:1900-01-01 Online:2009-05-20 Published:2009-05-20

摘要: 基于传统的实验方法,对胜利油田滩涂区土壤中石油降解菌进行了筛选和鉴定,并利用PCR-DGGE (变性梯度凝胶电泳)技术分析了胜利油田滩涂区的菌群多样性.结果表明:由研究区土壤中筛选出13株石油降解菌,其中,6株石油降解菌的石油降解率>90%,能降解大部分C12~C26的石油烷烃,系统发育学鉴定为AlcanivoraxHalomonasMarinobacter,均属于γ-proteobacteria分支;胜利油田滩涂区未培养优势菌有Sulfurovum、GillisiaArcobacter;该区优势菌群中γ-proteobacteria所占比重较大,其次为α-proteobactiria、ε-proteobactiria、Actinobacteria 和Flavobacteria.

关键词: 气候变暖, 被动式夜间增温, 土壤pH值, 土壤速效养分, 根系, 冬小麦

Abstract: The petroleum-degrading bacteria in Shengli Oil Field wetland soil were isolated and identified by traditional experiment methods, and their diversity was analyzed by PCR-DGGE (denaturing gradient gel electrophoresis). A total of thirteen petroleum-degrading bacterial strains were isolated, among which, six strains were found to have the ability of degrading the majority of C12〖KG-*2〗-〖KG-*7〗C26 petroleum hydrocarbon, with a degradation rate of >90%. These petroleum degraders were phylogeneticly identified as the members of Halomonas, Alcanivorax, and Marinobacter, which were all belonged to γ-proteobacteria. The uncultured predominant bacteria in Shengli Oil Field wetland soil were of Sulfurovum, Gillisia and Arcobacter. Among the predominant bacteria, γ-proteobacteria accounted for a larger proportion, followed by α-proteobactiria, ε-proteobactiria, Actinobacteria, and Flavobacteria.

Key words: climate warming, passive nighttime warming (PNW), soil pH, soil available nutrient, root system, winter wheat.