Maculavirus, a new genus of plant viruses (Articolo in rivista)

Type
Label
  • Maculavirus, a new genus of plant viruses (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s007050200046 (literal)
Alternative label
  • G.P. Martelli; S. Sabanadzovic; N. Abou Ghanem-Sabanadzovic; P. Saldarelli (2002)
    Maculavirus, a new genus of plant viruses
    in Archives of virology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G.P. Martelli; S. Sabanadzovic; N. Abou Ghanem-Sabanadzovic; P. Saldarelli (literal)
Pagina inizio
  • 1847 (literal)
Pagina fine
  • 1853 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 147 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Protezione delle Piante e Microbiologia Applicata, Università degli Studi and Istituto di Virologia Vegetale del CNR, Sezione di Bari, Italy Istituto Agronomico Mediterraneo, Valenzano (Bari), Italy (literal)
Titolo
  • Maculavirus, a new genus of plant viruses (literal)
Abstract
  • Maculavirus is a new genus of plant viruses typified by Grapevine fleck virus (GFkV). A possible second member is Grapevine redglobe virus (GRGV). Maculaviruses are phloem-limited non-mechanically transmissible viruses with isometric particles c. 30 nm in diameter that have a rounded contour and prominent surface structure. Vectors, if any, are unknown. GFkV preparations contain two centrifugal components, T, made up of empty protein shells and B, which contains 35% RNA. The coat protein (CP) has a molecular mass of 24 kDa. The genome is a single-stranded RNA that has c. 50% cytosine residues. It is 7564 nt in size, excluding the poly(A) tail and contains four putative open reading frames (ORF) that encode a 215.4 kDa polypeptide with the conserved motifs of replication-associated proteins of positive-strand RNA viruses (ORF1), the CP (ORF2), and one (GRGV) or two (GFkV) proline-rich polyproteins of 31.4 kDa (ORF3) and 15.9 kDa (ORF4), respectively, with unknown function. Replication-associated proteins and CP are phylogenetically related to those of members of the genera Tymovirus and Marafivirus. GFkV-infected grapevine cells contain vesiculated mitochondria, the possible site of RNA replication. In the natural host, GFkV particles accumulate in great quantity, sometimes in crystalline arrays in phloem cells. (literal)
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