Searching for a new putative cryptic virus in Pinus sylvestris L

Dorina Veliceasa, Natalya Enünlü, Péter B. Kós, Sigrid Köster, Eckhardt Beuther, Bogdan Morgun, Sachin D. Deshmukh, Noémi Lukács

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Abstract

Double-stranded RNAs (dsRNAs) were detected in different pine populations in Germany and Hungary. Two dsRNA species of 1.5 and 1.58 kbp, respectively, persisted in the same trees for at least 2 years and their presence was not associated with any symptoms. The dsRNAs were found to sediment in the VLP (virus-like particles) fraction and to be protected by protein(s) against RNase A digestion at low salt. cDNA cloning and sequencing of the smaller segment (dsRNA2) led to the identification of a putative RNA-dependent RNA-polymerase (RdRp) containing the GDD, as well as three other, conserved motifs. Sequence comparison with different RNA viruses and phylogenetic analysis indicates that the putative RdRp from pine shows highest similarity to the homologous proteins of Beet cryptic virus 3 and of a cryptic virus of Pyrus pyrifolia. On the basis of these results we suggest that the 1.5 and 1.58 kbp dsRNAs in P. sylvestris may represent the genomic segments of a new plant cryptic virus, Cryptoviruses have not yet been reported to occur in Gymnosperms.

Original languageEnglish
Pages (from-to)177-186
Number of pages10
JournalVirus Genes
Volume32
Issue number2
DOIs
Publication statusPublished - Apr 1 2006

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Keywords

  • Cryptovirus
  • Partitiviridae
  • Pinus sylvestris
  • RNA-dependent RNA polymerase
  • dsRNA

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Virology

Cite this

Veliceasa, D., Enünlü, N., Kós, P. B., Köster, S., Beuther, E., Morgun, B., Deshmukh, S. D., & Lukács, N. (2006). Searching for a new putative cryptic virus in Pinus sylvestris L. Virus Genes, 32(2), 177-186. https://doi.org/10.1007/s11262-005-6874-4