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No. de sistema: 000060436

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008 _ _ 200515m20199999xx^^r^p^o^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Evolutionary dynamics of transferred sequences between organellar genomes in Cucurbita
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| Twenty-nine DNA regions of plastid origin have been previously identified in the mitochondrial genome of Cucurbita pepo (pumpkin; Cucurbitaceae). Four of these regions harbor homolog sequences of rbcL, matK, rpl20–rps12 and trnL–trnF, which are widely used as molecular markers for phylogenetic and phylogeographic studies. We extracted the mitochondrial copies of these regions based on the mitochondrial genome of C. pepo and, along with published sequences for these plastome markers from 13 Cucurbita taxa, we performed phylogenetic molecular analyses to identify inter-organellar transfer events in the Cucurbita phylogeny and changes in their nucleotide substitution rates. Phylogenetic reconstruction and tree selection tests suggest that rpl20 and rbcL mitochondrial paralogs arose before Cucurbita diversification whereas the mitochondrial matK and trnL–trnF paralogs emerged most probably later, in the mesophytic Cucurbita clade. Nucleotide substitution rates increased one order of magnitude in all the mitochondrial paralogs compared to their original plastid sequences. Additionally, mitochondrial trnL–trnF sequences obtained by PCR from nine Cucurbita taxa revealed higher nucleotide diversity in the mitochondrial than in the plastid copies, likely related to the higher nucleotide substitution rates in the mitochondrial region and loss of functional constraints in its tRNA genes.
530 _ _ a| Disponible en línea
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Cucurbita pepo
650 _ 4 a| Genoma mitocondrial
650 _ 4 a| Filogenética
700 1 _ a| Aguirre Dugua, Xitlali
e| autora
700 1 _ a| Castellanos Morales, Gabriela
e| autora
n| 56237450200
700 1 _ a| Paredes Torres, Leslie M.
e| autora
700 1 _ a| Hernández Rosales, Helena S.
e| autora
700 1 _ a| Barrera Redondo, Josué
e| autor
700 1 _ a| Sánchez de la Vega, Guillermo
e| autor
700 1 _ a| Tapia Aguirre, Fernando
e| autor
700 1 _ a| Ruiz Mondragón, Karen Y.
e| autora
700 1 _ a| Scheinvar, Enrique
e| autor
700 1 _ a| Hernández, Paulina
e| autora
700 1 _ a| Aguirre Planter, Erika
e| autora
700 1 _ a| Montes Hernández, Salvador
e| autor
700 1 _ a| Lira Saade, Rafael
e| autor
700 1 _ a| Eguiarte Fruns, Luis Enrique
e| autor
773 0 _
t| Journal of Molecular Evolution
g| 87 (2019), p. 327–342
x| 1432-1432
900 _ _ a| Solicítelo con su bibliotecario/a
902 _ _ a| BG / MM
904 _ _ a| Mayo 2020
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
LNG eng
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*Solicítelo con su bibliotecario/a
Evolutionary dynamics of transferred sequences between organellar genomes in Cucurbita
Aguirre Dugua, Xitlali (autora)
Castellanos Morales, Gabriela (autora)
Paredes Torres, Leslie M. (autora)
Hernández Rosales, Helena S. (autora)
Barrera Redondo, Josué (autor)
Sánchez de la Vega, Guillermo (autor)
Tapia Aguirre, Fernando (autor)
Ruiz Mondragón, Karen Y. (autora)
Scheinvar, Enrique (autor)
Hernández, Paulina (autora)
Aguirre Planter, Erika (autora)
Montes Hernández, Salvador (autor)
Lira Saade, Rafael (autor)
Eguiarte Fruns, Luis Enrique (autor)
Nota: Disponible en línea
Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Journal of Molecular Evolution. 87 (2019), p. 327–342. ISSN: 1432-1432
No. de sistema: 60436
Tipo: Artículo
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Inglés

"Twenty-nine DNA regions of plastid origin have been previously identified in the mitochondrial genome of Cucurbita pepo (pumpkin; Cucurbitaceae). Four of these regions harbor homolog sequences of rbcL, matK, rpl20–rps12 and trnL–trnF, which are widely used as molecular markers for phylogenetic and phylogeographic studies. We extracted the mitochondrial copies of these regions based on the mitochondrial genome of C. pepo and, along with published sequences for these plastome markers from 13 Cucurbita taxa, we performed phylogenetic molecular analyses to identify inter-organellar transfer events in the Cucurbita phylogeny and changes in their nucleotide substitution rates. Phylogenetic reconstruction and tree selection tests suggest that rpl20 and rbcL mitochondrial paralogs arose before Cucurbita diversification whereas the mitochondrial matK and trnL–trnF paralogs emerged most probably later, in the mesophytic Cucurbita clade. Nucleotide substitution rates increased one order of magnitude in all the mitochondrial paralogs compared to their original plastid sequences. Additionally, mitochondrial trnL–trnF sequences obtained by PCR from nine Cucurbita taxa revealed higher nucleotide diversity in the mitochondrial than in the plastid copies, likely related to the higher nucleotide substitution rates in the mitochondrial region and loss of functional constraints in its tRNA genes."


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