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Family Level Phylogenies Reveal Relationships of Plant Viruses within the Order Bunyavirales

Authors
  • Herath, Venura1, 2
  • Romay, Gustavo1
  • Urrutia, Cesar D.1
  • Verchot, Jeanmarie1
  • 1 (C.D.U.)
  • 2 Department of Agriculture Biology, Faculty of Agriculture, University of Peradeniya, Peradeniya 20400, Sri Lanka
Type
Published Article
Journal
Viruses
Publisher
MDPI AG
Publication Date
Sep 10, 2020
Volume
12
Issue
9
Identifiers
DOI: 10.3390/v12091010
PMID: 32927652
PMCID: PMC7551631
Source
PubMed Central
Keywords
License
Green

Abstract

Bunyavirales are negative-sense segmented RNA viruses infecting arthropods, protozoans, plants, and animals. This study examines the phylogenetic relationships of plant viruses within this order, many of which are recently classified species. Comprehensive phylogenetic analyses of the viral RNA dependent RNA polymerase (RdRp), precursor glycoprotein (preGP), the nucleocapsid (N) proteins point toward common progenitor viruses. The RdRp of Fimoviridae and Tospoviridae show a close evolutional relationship while the preGP of Fimoviridae and Phenuiviridae show a closed relationship. The N proteins of Fimoviridae were closer to the Phasmaviridae , the Tospoviridae were close to some Phenuiviridae members and the Peribunyaviridae . The plant viral movement proteins of species within the Tospoviridae and Phenuiviridae were more closely related to each other than to members of the Fimoviridae . Interestingly, distal ends of 3′ and 5′ untranslated regions of species within the Fimoviridae shared similarity to arthropod and vertebrate infecting members of the Cruliviridae and Peribunyaviridae compared to other plant virus families. Co-phylogeny analysis of the plant infecting viruses indicates that duplication and host switching were more common than co-divergence with a host species.

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