Dehalogenation Activities and Distribution of Reductive Dehalogenase Homologous Genes in Marine Subsurface Sediments

被引：74

作者：

Futagami, Taiki ^{[1
,2
]}

Morono, Yuki ^{[1
]}

Terada, Takeshi ^{[3
]}

Kaksonen, Anna H. ^{[4
]}

Inagaki, Fumio ^{[1
]}

机构：

[1] Japan Agcy Marine Earth Sci & Technol, Geomicrobiol Grp, Kochi Inst Core Sample Res, Nanko Ku, Kochi 7838502, Japan

[2] Kyushu Univ, Dept Biosci & Biotechnol, Fac Agr, Fukuoka 8128581, Japan

[3] Marine Works Japan Ltd, Yokohama, Kanagawa 2360042, Japan

[4] Tampere Univ Technol, Dept Chem & Bioengn, FIN-33101 Tampere, Finland

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 2009年 / 75卷 / 21期

基金：

芬兰科学院;

关键词：

SUBSEAFLOOR SEDIMENTS; MICROBIAL ACTIVITIES; LIFE; DIVERSITY; COMMUNITY; SEQUENCE; STRAIN; SEA;

D O I：

10.1128/AEM.01124-09

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Halogenated organic compounds serve as terminal electron acceptors for anaerobic respiration in a diverse range of microorganisms. Here, we report on the widespread distribution and diversity of reductive dehalogenase homologous (rdhA) genes in marine subsurface sediments. A total of 32 putative rdhA phylotypes were detected in sediments from the southeast Pacific off Peru, the eastern equatorial Pacific, the Juan de Fuca Ridge flank off Oregon, and the northwest Pacific off Japan, collected at a maximum depth of 358 m below the seafloor. In addition, significant dehalogenation activity involving 2,4,6-tribromophenol and trichloroethene was observed in sediment slurry from the Nankai Trough Forearc Basin. These results suggest that dehalorespiration is an important energy-yielding pathway in the subseafloor microbial ecosystem.

引用

页码：6905 / 6909

页数：5

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