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dc.contributor.author
Noll, D.
dc.contributor.author
Leon, F.
dc.contributor.author
Brandt, D.
dc.contributor.author
Pistorius, P.
dc.contributor.author
Le Bohec, C.
dc.contributor.author
Bonadonna, F.
dc.contributor.author
Trathan, P. N.
dc.contributor.author
Barbosa, A.
dc.contributor.author
Raya Rey, Andrea Nélida
dc.contributor.author
Dantas, G. P. M.
dc.contributor.author
Bowie, R. C. K.
dc.contributor.author
Poulin, E.
dc.contributor.author
Vianna, J. A.
dc.date.available
2023-10-30T13:31:32Z
dc.date.issued
2022-12
dc.identifier.citation
Noll, D.; Leon, F.; Brandt, D.; Pistorius, P.; Le Bohec, C.; et al.; Positive selection over the mitochondrial genome and its role in the diversification of gentoo penguins in response to adaptation in isolation; Nature; Scientific Reports; 12; 1; 12-2022; 1-13
dc.identifier.issn
2045-2322
dc.identifier.uri
http://hdl.handle.net/11336/216363
dc.description.abstract
Although mitochondrial DNA has been widely used in phylogeography, evidence has emerged that factors such as climate, food availability, and environmental pressures that produce high levels of stress can exert a strong influence on mitochondrial genomes, to the point of promoting the persistence of certain genotypes in order to compensate for the metabolic requirements of the local environment. As recently discovered, the gentoo penguins (Pygoscelis papua) comprise four highly divergent lineages across their distribution spanning the Antarctic and sub-Antarctic regions. Gentoo penguins therefore represent a suitable animal model to study adaptive processes across divergent environments. Based on 62 mitogenomes that we obtained from nine locations spanning all four gentoo penguin lineages, we demonstrated lineage-specific nucleotide substitutions for various genes, but only lineage-specific amino acid replacements for the ND1 and ND5 protein-coding genes. Purifying selection (dN/dS < 1) is the main driving force in the protein-coding genes that shape the diversity of mitogenomes in gentoo penguins. Positive selection (dN/dS > 1) was mostly present in codons of the Complex I (NADH genes), supported by two different codon-based methods at the ND1 and ND4 in the most divergent lineages, the eastern gentoo penguin from Crozet and Marion Islands and the southern gentoo penguin from Antarctica respectively. Additionally, ND5 and ATP6 were under selection in the branches of the phylogeny involving all gentoo penguins except the eastern lineage. Our study suggests that local adaptation of gentoo penguins has emerged as a response to environmental variability promoting the fixation of mitochondrial haplotypes in a non-random manner. Mitogenome adaptation is thus likely to have been associated with gentoo penguin diversification across the Southern Ocean and to have promoted their survival in extreme environments such as Antarctica. Such selective processes on the mitochondrial genome may also be responsible for the discordance detected between nuclear- and mitochondrial-based phylogenies of gentoo penguin lineages.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
GENEIICA
dc.subject
ADAPTACION
dc.subject
`PINGÜINO PAPUA
dc.subject.classification
Otros Tópicos Biológicos
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Positive selection over the mitochondrial genome and its role in the diversification of gentoo penguins in response to adaptation in isolation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-06-30T15:25:08Z
dc.journal.volume
12
dc.journal.number
1
dc.journal.pagination
1-13
dc.journal.pais
Alemania
dc.description.fil
Fil: Noll, D.. Pontificia Universidad Católica de Chile; Chile. Universidad de Chile; Chile. Universidad Católica de Chile; Chile
dc.description.fil
Fil: Leon, F.. Universidad Católica de Chile; Chile. Pontificia Universidad Católica de Chile; Chile
dc.description.fil
Fil: Brandt, D.. University of California at Berkeley; Estados Unidos
dc.description.fil
Fil: Pistorius, P.. Nelson Mandela University; Sudáfrica
dc.description.fil
Fil: Le Bohec, C.. Centre Scientifique de Monaco; Mónaco. Université de Strasbourg; Francia
dc.description.fil
Fil: Bonadonna, F.. Université de Montpellier; Francia
dc.description.fil
Fil: Trathan, P. N.. British Antarctic Survey; Reino Unido
dc.description.fil
Fil: Barbosa, A.. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
dc.description.fil
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Dantas, G. P. M.. Pontifícia Universidade Católica de Minas Gerais; Brasil
dc.description.fil
Fil: Bowie, R. C. K.. University of California at Berkeley; Estados Unidos
dc.description.fil
Fil: Poulin, E.. Universidad de Chile; Chile
dc.description.fil
Fil: Vianna, J. A.. Universidad Católica de Chile; Chile. Pontificia Universidad Católica de Chile; Chile
dc.journal.title
Scientific Reports
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41598-022-07562-0
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41598-022-07562-0
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