Bacterial populations occurring in a trichloroethylene-contaminated aquifer during methane injection

被引：11

作者：

Baker, P ^{[1
]}

Futamata, H ^{[1
]}

Harayama, S ^{[1
]}

Watanabe, K ^{[1
]}

机构：

[1] Marine Biotechnol Inst, Kamaishi Labs, Kamaishi, Iwate 0260001, Japan

来源：

ENVIRONMENTAL MICROBIOLOGY | 2001年 / 3卷 / 03期

关键词：

D O I：

10.1046/j.1462-2920.2001.00178.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Soil core samples were obtained from a trichloroethylene (TCE)-contaminated aquifer before and after the start of methane biostimulation. DNA was extracted directly from the soil samples, and denaturing gradient gel electrophoresis (DGGE) was used to analyse bacterial 16S ribosomal DNA fragments that were PCR amplified from these DNA samples. This analysis consistently detected two phylotypes in the methane-injected samples. These phylotypes were closely related to Methylobacter and Methylomonas, both belonging to type I methanotrophs. A competitive DGGE analysis using Methylosinus trichosporium OB3b cells as an internal quantitative standard showed that these populations accounted for 10(8)-10(9) cells g(-1) soil. These results showed that type methanotrophs formed a significant proportion of the bacterial community during methane biostimulation. The implications of this finding for TCE bioremediation were discussed.

引用

页码：187 / 193

页数：7

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