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Gene transfer from a bacterium injected into an aquifer to an indigenous bacterium
Author(s) -
ZHOU J. Z.,
TIEDJE J. M.
Publication year - 1995
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1111/j.1365-294x.1995.tb00261.x
Subject(s) - biology , bacteria , 16s ribosomal rna , microbiology and biotechnology , strain (injury) , proteobacteria , gene , phylogenetic tree , pseudomonas , ribosomal rna , horizontal gene transfer , flavobacteriaceae , genetics , bacteroidetes , anatomy
Two novel 3‐chlorobenzoate‐degrading bacteria were previously isolated from an aquifer in which no such bacteria could be enriched prior to the introduction of the 3‐chlorobenzoate‐degrading strain, Pseudomonas sp. B13. To understand the origin of 3‐chlorobenzoate‐degrading genes in the two novel isolates, the 16S ribosomal RNA, clc D (dienelactone hydrolase) and clc A (chlorocatechol oxygenase) genes from these bacteria were amplified and sequenced. The partial 16S rRNA gene sequences and REP‐PCR patterns showed that these two novel isolates were identical but differed from strain B13. Phylogenetic analyses revealed that the novel isolates were closely related to Alcaligenes eutrophus in the beta subclass of the Proteobacteria , whereas strain B13 was related to Pseudomonas aeruginosa and P. mendocina in the gamma subclass of the Proteobacteria. In contrast, the clc D and clc A gene sequences were identical on strain B13 and these two isolates, indicating that the 3‐chlorobenzoate‐degrading genes were transferred from strain B13 to these isolates. What cannot be established is when this transfer occurred.