Molecular characterization of birch toti-like virus, a plant-associated member of the new family Orthototiviridae.
Journal
Archives of virology
ISSN: 1432-8798
Titre abrégé: Arch Virol
Pays: Austria
ID NLM: 7506870
Informations de publication
Date de publication:
08 Jun 2024
08 Jun 2024
Historique:
received:
25
03
2024
accepted:
02
05
2024
medline:
8
6
2024
pubmed:
8
6
2024
entrez:
8
6
2024
Statut:
epublish
Résumé
A novel totivirus, named "birch toti-like virus" (BTLV), was discovered in European white birch (Betula pendula) plants. The genome of BTLV is 4,967 nucleotides long and contains two overlapping open reading frames (ORFs) coding for the capsid protein (CP) and an RNA-dependent RNA-polymerase (RdRP). The encoded CP and RdRP proteins shared 46.9% and 60.2% amino acid sequence identity, respectively, with those of Panax notoginseng virus B. The presence of a putative slippery heptamer signal 82 nt upstream of the stop codon of ORF1 suggests that a -1 translational frameshifting strategy is involved in the expression of ORF2, like in other totiviruses. Phylogenetic analysis based on the CP and RdRP amino acid sequences placed this virus within a clade of plant-associated totiviruses, with taro-associated virus as its closest relative. Hence, based on its distinct host and the amino acid sequence similarity between BTLV and its relatives, we conclude that birch toti-like virus is a new member of the genus Totivirus.
Identifiants
pubmed: 38850451
doi: 10.1007/s00705-024-06067-7
pii: 10.1007/s00705-024-06067-7
doi:
Substances chimiques
Capsid Proteins
0
RNA-Dependent RNA Polymerase
EC 2.7.7.48
Viral Proteins
0
RNA, Viral
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
140Subventions
Organisme : USDA-NIFA
ID : Hatch Project IDA01712
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.
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