The cnr-like operon in strain Comamonas sp. encoding resistance to cobalt and nickel

Сиунова, Т. В.; Сиунов, А. В.; Кочетков, В. В.; Boronin, A. M.

doi:10.1134/s1022795409030053

Cited by 10 publications

(8 citation statements)

References 13 publications

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“…BS501 contributed a high level of resistance (5 mmol l −1 ) to cobalt and nickel (Siunova et al . ). DBA degradation by Comamonas sp.…”

Section: Resultsmentioning

confidence: 97%

“…Siunova and co-workers showed that plasmid pBS501 in Comamonas sp. BS501 contributed a high level of resistance (5 mmol l À1 ) to cobalt and nickel (Siunova et al 2009 3ah48 was most insusceptible to Co 2+ , followed by Cr 2+ and Zn 2+ . The tendency is likely to correlate with the cell growth patterns observed in the previous studies.…”

Section: Effects Of Metals On Dba Degradationmentioning

confidence: 99%

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Comamonas sp. 3ah48 is a dibenz[ a,h ]anthracene‐degrading bacterium that is tolerant to heavy metals

Okai

Ohki

Yamamoto

et al. 2019

Lett Appl Microbiol

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Industrialization often causes polycyclic aromatic hydrocarbon (PAH) and heavy metal contamination of soil and water. In this study, we isolated a bacterium from bottom mud water around a park of Kawasaki Port, Japan, that degrades the 5‐ring PAH dibenz[a,h]anthracene (DBA). The strain, Comamonas sp. 3ah48, degraded 29% of DBA (30 μg ml−1) in 7 days, and the degradation level increased drastically, to 59%, by the addition of glutamate to the medium. The strain also degraded 40, 14, 15 and 19% of pyrene (Pyr), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF) and benzo[g,h,i]perylene (BghiP) respectively. Benzo[a]pyrene (BaP) was degraded only when glutamate was added to the medium. Strain 3ah48 retained its degradation levels in the presence of 2 mmol l−1 Co2+, Zn2+ or Cr2+, at almost the same level as that without metal, and increased the DBA degradation level to 57% in the presence of 2 mmol l−1 Cu2+, suggesting the possibility of the presence of laccase. Significance and Impact of the Study Sixteen polycyclic aromatic hydrocarbons (PAHs) are listed as priority pollutants by the United States Environmental Protection Agency (USEPA). Information about the biodegradation of one of those PAHs, dibenz[a,h]anthracene (DBA), is limited. The present study focuses on DBA degradation by Comamonas sp. 3ah48 strain isolated around Kawasaki Port, Japan. Comamonas sp. 3ah48, cultured with the addition of glutamate to the medium, was found to increase the degradation level of DBA and to degrade DBA even in the presence of high concentrations of heavy metals.

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“…BS501 contributed a high level of resistance (5 mmol l −1 ) to cobalt and nickel (Siunova et al . ). DBA degradation by Comamonas sp.…”

Section: Resultsmentioning

confidence: 97%

Section: Effects Of Metals On Dba Degradationmentioning

confidence: 99%

Comamonas sp. 3ah48 is a dibenz[ a,h ]anthracene‐degrading bacterium that is tolerant to heavy metals

Okai

Ohki

Yamamoto

et al. 2019

Lett Appl Microbiol

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“…Members of the genus Comamonas are able to cope with harsh environmental conditions such as high concentrations of arsenate [50,51], zinc [52], cobalt and nickel [53], or phenol [54], and can exhibit increased resistance to oxidative stress [55] or antibiotics [56]. Another C.…”

Section: Introductionmentioning

confidence: 99%

Permanent draft genome sequence of Comamonas testosteroni KF-1

Weiss¹,

Kesberg²,

LaButti³

et al. 2013

Stand. Genomic Sci.

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Comamonas testosteroni KF-1 is a model organism for the elucidation of the novel biochemical degradation pathways for xenobiotic 4-sulfophenylcarboxylates (SPC) formed during biodegradation of synthetic 4-sulfophenylalkane surfactants (linear alkylbenzenesulfonates, LAS) by bacterial communities. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 6,026,527 bp long chromosome (one sequencing gap) exhibits an average G+C content of 61.79% and is predicted to encode 5,492 protein-coding genes and 114 RNA genes.

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“…In addition, Comamonas sp. (Co 2 ) that showed moderate growth and DHA activity (140 and 82, respectively) when cultivated with 50 mg/l cobalt was found containing plasmid encoding cobalt and nickel resistance (Siunova et al 2009). According to their average DHA (reflecting their resistance) against the individual metals, acclimatized bacteria can be arranged in the following order from the highly resistant to the highly sensitive Cd 2 .…”

Section: Effect Of Individual Metalsmentioning

confidence: 96%

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

et al. 2012

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Removal of heavy metals from contaminated domestic-industrial effluent using eight resistant indigenous bacteria isolated from acclimatized activated sludge was investigated. Molecular identification using 16S rDNA amplification revealed that all strains were Gram-negative among which two were resistant to each of copper, cadmium and cobalt while one was resistant to each of chromium and the heavy metal mixture. They were identified as Enterobacter sp. 320 mg Cd/l, 140 mg Co/l and 29 mg Cr/l respectively. The four resistant strains were used as a mixture to remove heavy metals (elevated concentrations) and reduce the organic load of wastewater effluent. Results revealed that using the proposed activated sludge with the resistant bacterial mixture was more efficient for heavy metal removal compared to the activated sludge alone. It is therefore recommended that the proposed activated sludge system augmented with the acclimatized strains is the best choice to ensure high treatment efficiency and performance under metal stresses especially when industrial effluents are involved.

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The cnr-like operon in strain Comamonas sp. encoding resistance to cobalt and nickel

Cited by 10 publications

References 13 publications

Comamonas sp. 3ah48 is a dibenz[ a,h ]anthracene‐degrading bacterium that is tolerant to heavy metals

Comamonas sp. 3ah48 is a dibenz[ a,h ]anthracene‐degrading bacterium that is tolerant to heavy metals

Permanent draft genome sequence of Comamonas testosteroni KF-1

Bioremediation of heavy metal-contaminated effluent using optimized activated sludge bacteria

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