Título
A Lineage of Begomoviruses Encode Rep and AC4 Proteins of Enigmatic Ancestry: Hints on the Evolution of Geminiviruses in the New World
Autor
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
Nivel de Acceso
Acceso Abierto
Materias
GEMINIVIRUS EVOLUTION - (AUTORES) REPLICATION PROTEIN - (AUTORES) CURTOVIRUS TAXONOMY - (AUTORES) ENDOGENOUS VIRAL ELEMENT - (AUTORES) REPLICATION ORIGIN - (AUTORES) ROLLING-CIRCLE REPLICATION - (AUTORES) BIOLOGÍA Y QUÍMICA - (CTI) CIENCIAS DE LA VIDA - (CTI) BIOLOGÍA MOLECULAR - (CTI) BIOLOGÍA MOLECULAR DE PLANTAS - (CTI) BIOLOGÍA MOLECULAR DE PLANTAS - (CTI)
Resumen o descripción
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
Fecha de publicación
2019
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
Viruses, 11(7), 644, 2019
Idioma
Inglés
Relación
&
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
Sugerencia de citación
Torres-Herrera, S. I., Romero-Osorio, A., Moreno-Valenzuela, O., Pastor-Palacios, G., Cardenas-Conejo, Y., Ramírez-Prado, J. H., ...
Repositorio Orígen
Repositorio Institucional CICY
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