The genome of Beet cryptic virus 1 shows high homology to certain cryptoviruses present in phylogenetically distant hosts

Anita Szego, Natalya Enünlü, Sachin D. Deshmukh, Dorina Veliceasa, E. Hunyadi-Gulyás, Thomas Kühne, Pál Ilyés, László Potyondi, Katalin Medzihradszky, Noémi Lukács

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This study determined the complete nucleotide sequence of Beet cryptic virus 1 (BCV1). As expected by analogy to previously sequenced alphacryptoviruses, dsRNA1 (2008 bp) encodes a 72.5-kDa protein containing sequence motifs characteristic for RNA-dependent RNA polymerases (RdRp). In addition to the full-length dsRNA1, a truncated form was also detected in dsRNA extracts. dsRNA2 (1783 bp) codes for the viral coat protein (CP) as proven by the identity of the predicted CP sequence to peptide sequences of the purified virion protein. The amino acid sequence of BCV1 RdRp as well as the 5'- and 3'-UTRs show 81-85% identity to the corresponding regions of Vicia cryptic virus (VCV), White clover cryptic virus 1 (WCCV1) and Carrot cryptic virus (CaCV). The amino acid sequence identity of the CP is about 55-62%, moreover, a strong conservation of predicted a-helical regions was observed. The high degree of similarity of these seed- and pollen-transmitted viruses persisting in phylogenetically distant hosts, together with their high similarity to fungal partitiviruses strongly supports the hypothesis that horizontal transfer by a fungus played a role in the emergence of the present cryptovirus species. The change in the distribution of cryptic viruses may also be due to human influence: While earlier BCV1 occurred frequently in sugar beet cultivars, it is very rare in cultivars currently used in agricultural practice and was detected in only one of the 28 cultivars investigated in our experiments.

Original languageEnglish
Pages (from-to)267-276
Number of pages10
JournalVirus Genes
Volume40
Issue number2
DOIs
Publication statusPublished - Apr 2010

Fingerprint

Beta vulgaris
Genome
Viruses
Capsid Proteins
RNA Replicase
Amino Acid Sequence
Vicia
Medicago
Daucus carota
5' Untranslated Regions
3' Untranslated Regions
Pollen
Virion
Seeds
Proteins
Fungi
Peptides

Keywords

  • BCV
  • Horizontal transfer
  • Partitiviridae
  • Sugar beet
  • Virus genome

ASJC Scopus subject areas

  • Virology
  • Genetics
  • Molecular Biology

Cite this

The genome of Beet cryptic virus 1 shows high homology to certain cryptoviruses present in phylogenetically distant hosts. / Szego, Anita; Enünlü, Natalya; Deshmukh, Sachin D.; Veliceasa, Dorina; Hunyadi-Gulyás, E.; Kühne, Thomas; Ilyés, Pál; Potyondi, László; Medzihradszky, Katalin; Lukács, Noémi.

In: Virus Genes, Vol. 40, No. 2, 04.2010, p. 267-276.

Research output: Contribution to journalArticle

Szego, A, Enünlü, N, Deshmukh, SD, Veliceasa, D, Hunyadi-Gulyás, E, Kühne, T, Ilyés, P, Potyondi, L, Medzihradszky, K & Lukács, N 2010, 'The genome of Beet cryptic virus 1 shows high homology to certain cryptoviruses present in phylogenetically distant hosts', Virus Genes, vol. 40, no. 2, pp. 267-276. https://doi.org/10.1007/s11262-009-0432-4
Szego, Anita ; Enünlü, Natalya ; Deshmukh, Sachin D. ; Veliceasa, Dorina ; Hunyadi-Gulyás, E. ; Kühne, Thomas ; Ilyés, Pál ; Potyondi, László ; Medzihradszky, Katalin ; Lukács, Noémi. / The genome of Beet cryptic virus 1 shows high homology to certain cryptoviruses present in phylogenetically distant hosts. In: Virus Genes. 2010 ; Vol. 40, No. 2. pp. 267-276.
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