Work

Interviral Recombination between Plant, Insect, and Fungal RNA Viruses: Role of the Intracellular Ca 2+ /Mn 2+ Pump

Year: 2019

Type: article

Abstract: Viruses with RNA genomes are abundant, and their genomic sequences show astonishing variation. Genetic recombination in RNA viruses is a major force behind their rapid evolution, enhanced pathogenesis, and adaptation to their hosts. We utilized a previously identified intracellular Ca 2+ /Mn 2+ pump-deficient yeast to search for interviral recombinants. Noninfectious viral replication systems were used to avoid generating unwanted infectious interviral recombinants. Altogether, interviral RNA recombinants were observed between plant and insect viruses, and between a fungal double-stranded RNA (dsRNA) virus and an insect virus, in the yeast host. In addition, interviral recombinants between two plant virus replicon RNAs were identified in N. benthamiana plants, in which the intracellular Ca 2+ /Mn 2+ pump was depleted. These findings underline the crucial role of the host in promoting RNA recombination among unrelated viruses.

Source: Journal of Virology

DOI: 10.1128/jvi.01015-19

Authors: Nikolay Kovalev, Judit Pogany, Peter D. Nagy

Institution: University of Kentucky

Language: English

Topic: Plant Virus Research Studies

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: green

Funders: National Institute of Allergy and Infectious Diseases, Division of Molecular and Cellular Biosciences

Awards: G1749972457, Blocking RNA virus replication through the antiviral functions of cellular helicases