Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1688
A Lineage of Begomoviruses Encode Rep and AC4 Proteins of Enigmatic Ancestry: Hints on the Evolution of Geminiviruses in the New World
SANDRA ILIANA TORRES HERRERA
ANGELICA ROMERO OSORIO
OSCAR ALBERTO MORENO VALENZUELA
GUILLERMO PASTOR PALACIOS
Yair Cardenas-Conejo
Jorge Ramiez_Prado
Lina Riego-Ruiz
YERENI MINERO GARCIA
Salvador Ambriz Granados
Gerardo Rafael Argüello Astorga
Acceso Abierto
Atribución-NoComercial-SinDerivadas
GEMINIVIRUS EVOLUTION
REPLICATION PROTEIN
CURTOVIRUS TAXONOMY
ENDOGENOUS VIRAL ELEMENT
REPLICATION ORIGIN
ROLLING-CIRCLE REPLICATION
The begomoviruses (BGVs) are plant pathogens that evolved in the Old World during the Cretaceous and arrived to the New World (NW) in the Cenozoic era. A subgroup of NW BGVs, the “Squash leaf curl virus (SLCV) lineage” (S-Lin), includes viruses with unique characteristics. To get clues on the evolutionary origin of this lineage, a search for divergent members was undertaken. Four novel BGVs were characterized, including one that is basal to the group. Comparative analyses led to discover a ~670 bp genome module that is nearly exclusive of this lineage, encompassing the replication origin, the AC4 gene, and 480 bp of the Rep gene. A similar DNA module was found in two curtoviruses, hence suggesting that the S-Lin ancestor acquired its distinctive genomic segment by recombination with a curtovirus. This hypothesis was definitely disproved by an in-depth sequence analysis. The search for homologs of S-Lin Rep uncover the common origin of Rep proteins encoded by diverse Geminiviridae genera and viral “fossils” integrated at plant genomes. In contrast, no homolog of S-Lin Rep was found in public databases. Consequently, it was concluded that the SLCV clade ancestor evolved by a recombination event between a primitive NW BGV and a virus from a hitherto unknown lineage
2019
Artículo
Viruses, 11(7), 644, 2019
Inglés
Torres-Herrera, S. I., Romero-Osorio, A., Moreno-Valenzuela, O., Pastor-Palacios, G., Cardenas-Conejo, Y., Ramírez-Prado, J. H., ... & Argüello-Astorga, G. R. (2019). A Lineage of Begomoviruses Encode Rep and AC4 Proteins of Enigmatic Ancestry: Hints on the Evolution of Geminiviruses in the New World. Viruses, 11(7), 644
BIOLOGÍA MOLECULAR DE PLANTAS
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

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