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Exploring the evolutionary dynamics of plasmids : the Acinetobacter pan-plasmidome

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Abstract
Background: Prokaryotic plasmids have a dual importance in the microbial world: first they have a great impact on the metabolic functions of the host cell, providing additional traits that can be accumulated in the cell without altering the gene content of the bacterial chromosome. Additionally and/or alternatively, from a genome perspective, plasmids can provide a basis for genomic rearrangements via homologous recombination and so they can facilitate the loss or acquisition of genes during these events, which eventually may lead to horizontal gene transfer (HGT). Given their importance for conferring adaptive traits to the host organisms, the interest in plasmid sequencing is growing and now many complete plasmid sequences are available online. Results: By using the newly developed Blast2Network bioinformatic tool, a comparative analysis was performed on the plasmid and chromosome sequence data available for bacteria belonging to the genus Acinetobacter, an ubiquitous and clinically important group of gamma-proteobacteria. Data obtained showed that, although most of the plasmids lack mobilization and transfer functions, they have probably a long history of rearrangements with other plasmids and with chromosomes. Indeed, traces of transfers between different species can be disclosed. Conclusions: We show that, by combining plasmid and chromosome similarity, identity based, network analysis, an evolutionary scenario can be described even for highly mobile genetic elements that lack extensively shared genes. In particular we found that transposases and selective pressure for mercury resistance seem to have played a pivotal role in plasmid evolution in Acinetobacter genomes sequenced so far.
Keywords
VENETIANUS VE-C3, BAUMANNII, RESISTANCE, BACTERIAL PLASMIDS, HORIZONTAL GENE-TRANSFER, NATURAL TRANSFORMATION, DIESEL FUEL DEGRADATION, GENOME, SEQUENCE, BAYLYI

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MLA
Fondi, Marco et al. “Exploring the Evolutionary Dynamics of Plasmids : the Acinetobacter Pan-plasmidome.” BMC EVOLUTIONARY BIOLOGY 10 (2010): n. pag. Print.
APA
Fondi, M., Bacci, G., Brilli, M., Papaleo, M. C., Mengoni, A., Vaneechoutte, M., Dijkshoorn, L., et al. (2010). Exploring the evolutionary dynamics of plasmids : the Acinetobacter pan-plasmidome. BMC EVOLUTIONARY BIOLOGY, 10.
Chicago author-date
Fondi, Marco, Giovanni Bacci, Matteo Brilli, Maria Cristina Papaleo, Akessio Mengoni, Mario Vaneechoutte, Lenie Dijkshoorn, and Renato Fani. 2010. “Exploring the Evolutionary Dynamics of Plasmids : the Acinetobacter Pan-plasmidome.” Bmc Evolutionary Biology 10.
Chicago author-date (all authors)
Fondi, Marco, Giovanni Bacci, Matteo Brilli, Maria Cristina Papaleo, Akessio Mengoni, Mario Vaneechoutte, Lenie Dijkshoorn, and Renato Fani. 2010. “Exploring the Evolutionary Dynamics of Plasmids : the Acinetobacter Pan-plasmidome.” Bmc Evolutionary Biology 10.
Vancouver
1.
Fondi M, Bacci G, Brilli M, Papaleo MC, Mengoni A, Vaneechoutte M, et al. Exploring the evolutionary dynamics of plasmids : the Acinetobacter pan-plasmidome. BMC EVOLUTIONARY BIOLOGY. 2010;10.
IEEE
[1]
M. Fondi et al., “Exploring the evolutionary dynamics of plasmids : the Acinetobacter pan-plasmidome,” BMC EVOLUTIONARY BIOLOGY, vol. 10, 2010.
@article{1016511,
  abstract     = {Background: Prokaryotic plasmids have a dual importance in the microbial world: first they have a great impact on the metabolic functions of the host cell, providing additional traits that can be accumulated in the cell without altering the gene content of the bacterial chromosome. Additionally and/or alternatively, from a genome perspective, plasmids can provide a basis for genomic rearrangements via homologous recombination and so they can facilitate the loss or acquisition of genes during these events, which eventually may lead to horizontal gene transfer (HGT). Given their importance for conferring adaptive traits to the host organisms, the interest in plasmid sequencing is growing and now many complete plasmid sequences are available online.
Results: By using the newly developed Blast2Network bioinformatic tool, a comparative analysis was performed on the plasmid and chromosome sequence data available for bacteria belonging to the genus Acinetobacter, an ubiquitous and clinically important group of gamma-proteobacteria. Data obtained showed that, although most of the plasmids lack mobilization and transfer functions, they have probably a long history of rearrangements with other plasmids and with chromosomes. Indeed, traces of transfers between different species can be disclosed.
Conclusions: We show that, by combining plasmid and chromosome similarity, identity based, network analysis, an evolutionary scenario can be described even for highly mobile genetic elements that lack extensively shared genes. In particular we found that transposases and selective pressure for mercury resistance seem to have played a pivotal role in plasmid evolution in Acinetobacter genomes sequenced so far.},
  articleno    = {59},
  author       = {Fondi, Marco and Bacci, Giovanni and Brilli, Matteo and Papaleo, Maria Cristina and Mengoni, Akessio and Vaneechoutte, Mario and Dijkshoorn, Lenie and Fani, Renato},
  issn         = {1471-2148},
  journal      = {BMC EVOLUTIONARY BIOLOGY},
  keywords     = {VENETIANUS VE-C3,BAUMANNII,RESISTANCE,BACTERIAL PLASMIDS,HORIZONTAL GENE-TRANSFER,NATURAL TRANSFORMATION,DIESEL FUEL DEGRADATION,GENOME,SEQUENCE,BAYLYI},
  language     = {eng},
  pages        = {15},
  title        = {Exploring the evolutionary dynamics of plasmids : the Acinetobacter pan-plasmidome},
  url          = {http://dx.doi.org/10.1186/1471-2148-10-59},
  volume       = {10},
  year         = {2010},
}

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