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標題: Dissemination of TnMERI1-like mercury resistance transposons among Bacillus isolated from worldwide environmental samples
作者: Narita, M.
Matsui, K.
Huang, C.C.
Kawabata, Z.
Endo, G.
關鍵字: mercury resistance;Bacillus;mer operon;class II transposon;worldwide;distribution;gram-positive bacteria;class-ii transposon;soil bacteria;minamata;bay;natural environments;nucleotide-sequence;genes;diversity;sediment;tn21
Project: Fems Microbiology Ecology
期刊/報告no:: Fems Microbiology Ecology, Volume 48, Issue 1, Page(s) 47-55.
Fifty-six mercury-resistant (Hg-R) Bacillus strains were isolated from natural environments at various sites of the world. Southern hybridisation and polymerase chain reaction (PCR) analysis showed that 21 of the 56 isolates have closely related or identical mer operons to that of Bacillus megaterium MB1. These 21 isolates displayed a broad-spectrum mercury resistance and volatilised Hg-0. PCR amplification with a single primer and restriction fragment length polymorphism analysis showed that these 21 isolates had TnMEII-like class II transposons. These transposons can be classified into Tn5084, Tn5085, or TnMER11. From these results, at least three types of class II mercury resistance transposons exist in Hg-R Bacillus and these transposons may contribute the worldwide distribution and horizontal dissemination of the mer operons among Bacillus strains in natural environments. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
ISSN: 0168-6496
DOI: 10.1016/j.femsec.2003.12.011
Appears in Collections:期刊論文

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