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AcMNPV Core Gene ac109 Is Required for Budded Virion Transport to the Nucleus and for Occlusion of Viral Progeny

The Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac109 core gene has been previously characterized as an essential late gene. Our results showed that budded virions could be detected in supernatants of infected Sf-9 cells, even when ac109 knockout viruses displayed a single-cell inf...

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Main Authors: Alfonso, Victoria, Maroniche, Guillermo Andrés, Reca, Sol Rita, Lopez, Maria Gabriela, Del Vas, Mariana, Taboga, Oscar Alberto
Format: info:ar-repo/semantics/artículo
Language:Inglés
Published: Plos One 2019
Subjects:
Lepidoptera
Autographa californica
Genética
Fenotipos
Virus
Genetics
Phenotypes
Viruses
Online Access:https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0046146
http://hdl.handle.net/20.500.12123/5117
https://doi.org/10.1371/journal.pone.0046146
Summary:The Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac109 core gene has been previously characterized as an essential late gene. Our results showed that budded virions could be detected in supernatants of infected Sf-9 cells, even when ac109 knockout viruses displayed a single-cell infection phenotype. Moreover, confocal microscopy analysis revealed that budded virions can enter the cytoplasm but are unable to enter the cell nucleus. This defect could be repaired by complementing ac109 in trans. In addition, polyhedra of normal size could be detected in Sf-9 nuclei infected with ac109 knockout viruses. However, electron microscopy demonstrated that these occlusion bodies were empty. Altogether, these results indicate that ac109 is required for infectivity of both phenotypes of virus.

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