<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A bacterial isolate MR-CH-I2 [KC809939] isolated from soil contaminated mainly by high nickel concentrations in southwest Slovakia was previously found carrying <italic>ncc</italic>A-like heavy-metal resistance determinant, marked as MR-CH-I2-HMR [KF218096]. According to phylogenetic analysis of short (696 bp) 16S rDNA (16S rRNA) sequences this bacterium was tentatively assigned to Uncultured beta proteobacterium clone GC0AA7ZA05PP1 [JQ913301]. <italic>ncc</italic>A-like gene product was on the same base of its partial (581 bp) sequences tentatively assigned to CzcA family heavy metal efflux pump [YP_001899332] from <italic>Ralstonia picketii</italic> 12J with 99% similarity. In this study the bacterium MR-CH-I2 and its heavy-metal resistance determinant were more precisely identified. This bacterial isolate was on the base of phylogenetic analysis of almost the whole (1,500 bp) 16S rDNA (16S rRNA) sequence, MR-CH-I2 [MF102046], and sequence for <italic>gyr</italic>B gene and its product respectively, MR-CH-I2-gyrB [MF134666], assigned to <italic>R. picketii</italic> 12J [CP001068] with 99 and 100% similarities, respectively. In addition, the whole <italic>ncc</italic>A-like heavy-metal resistance gene sequence (3,192 bp), marked as MR-CH-I2-nccA [KR476581], was obtained and on the base of phylogenetic analysis its assignment was confirmed to MULTISPECIES: cation efflux system protein CzcA [WP_004635342] from Burkholderiaceae with 98% similarity. Furthermore, although the bacterium carried one high molecular plasmid of about 50 kb in size, <italic>ncc</italic>A-like gene was not located on this plasmid. Finally, the results from RT-PCR analysis showed that MR-CH-I2-nccA gene was significantly induced only by the addition of nickel.</p></abstract>

A bacterial isolate MR-CH-I2 [KC809939] isolated from soil contaminated mainly by high nickel concentrations in southwest Slovakia was previously found carrying nccA-like heavy-metal resistance determinant, marked as MR-CH-I2-HMR [KF218096]. According to phylogenetic analysis of short (696 bp) 16S rDNA (16S rRNA) sequences this bacterium was tentatively assigned to Uncultured beta proteobacterium clone GC0AA7ZA05PP1 [JQ913301]. nccA-like gene product was on the same base of its partial (581 bp) sequences tentatively assigned to CzcA family heavy metal efflux pump [YP_001899332] from Ralstonia picketii 12J with 99% similarity. In this study the bacterium MR-CH-I2 and its heavy-metal resistance determinant were more precisely identified. This bacterial isolate was on the base of phylogenetic analysis of almost the whole (1,500 bp) 16S rDNA (16S rRNA) sequence, MR-CH-I2 [MF102046], and sequence for gyrB gene and its product respectively, MR-CH-I2-gyrB [MF134666], assigned to R. picketii 12J [CP001068] with 99 and 100% similarities, respectively. In addition, the whole nccA-like heavy-metal resistance gene sequence (3,192 bp), marked as MR-CH-I2-nccA [KR476581], was obtained and on the base of phylogenetic analysis its assignment was confirmed to MULTISPECIES: cation efflux system protein CzcA [WP_004635342] from Burkholderiaceae with 98% similarity. Furthermore, although the bacterium carried one high molecular plasmid of about 50 kb in size, nccA-like gene was not located on this plasmid. Finally, the results from RT-PCR analysis showed that MR-CH-I2-nccA gene was significantly induced only by the addition of nickel.

The Heavy-Metal Resistance Determinant of Newly Isolated Bacterium from a Nickel-Contaminated Soil in Southwest Slovakia

Polish Journal of Microbiology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A bacterial isolate MR-CH-I2 [KC809939] isolated from soil contaminated mainly by high nickel concentrations in southwest Slovakia was previously found...

The Heavy-Metal Resistance Determinant of Newly Isolated Bacterium from a Nickel-Contaminated Soil in Southwest Slovakia

Article Category: original-paper

Publié en ligne: 30 juin 2018

Pages: 191 - 201

Reçu: 13 juin 2017

Accepté: 28 juil. 2017

DOI: https://doi.org/10.21307/pjm-2018-022

Mots clés
16S rRNA (16S rDNA), DNA gyrase subunit B, heavy-metal resistance determinant, high molecular plasmid, nickel-contaminated soil, RT-qPCR

© 2018 MATEJ REMENÁR et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The Heavy-Metal Resistance Determinant of Newly Isolated Bacterium from a Nickel-Contaminated Soil in Southwest Slovakia

Article Category: original-paper

Publié en ligne: 30 juin 2018

Pages: 191 - 201

Reçu: 13 juin 2017

Accepté: 28 juil. 2017

DOI: https://doi.org/10.21307/pjm-2018-022

Mots clés16S rRNA (16S rDNA), DNA gyrase subunit B, heavy-metal resistance determinant, high molecular plasmid, nickel-contaminated soil, RT-qPCR

© 2018 MATEJ REMENÁR et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
16S rRNA (16S rDNA), DNA gyrase subunit B, heavy-metal resistance determinant, high molecular plasmid, nickel-contaminated soil, RT-qPCR