The complete nucleotide sequence and genome organization of Fig cryptic virus, a novel bipartite dsRNA virus infecting fig, widely distributed in the Mediterranean basin.

Abstract:

:Two double-stranded RNA (dsRNA) segments of a virus with a bipartite genome identified in fig (Ficus carica L.) and denoted Fig cryptic virus (FCV) were cloned and sequenced. Viral dsRNAs are 1696 bp (RNA-1) and 1415 bp (RNA-2) in size. RNA-1 contains a single ORF (1419 nt) potentially encoding a 54 kDa protein and comprising the conserved amino acid motifs of the RNA-dependent RNA polymerase (RdRp) domain of species of the genus Alphacryptovirus. Its full-length amino acid sequence has the highest identity with Raphanus sativus cryptic virus 2 (RsCV-2) (36%), Beet cryptic virus 3 (BCV-3) (36%) and Fragaria chiloensis cryptic virus (FCCV) (34%). RNA-2 has also a single ORF (1014 nt) coding for a polypeptide with a predicted molecular mass of 38 kDa, identified as the viral coat protein (CP). In a phylogenetic tree constructed with the amino acid sequences of the RdRp domain, FCV clusters in a clade comprising BCV-3 and a number of tentative species of the genus Alphacryptovirus. FCV is not mechanically transmissible. It was detected in fig orchards of six Mediterranean countries (Albania, Algeria, Italy, Lebanon, Syria and Tunisia) where it does not seem to induce a visible disease.

journal_name

Virus Genes

journal_title

Virus genes

authors

Elbeaino T,Kubaa RA,Digiaro M,Minafra A,Martelli GP

doi

10.1007/s11262-011-0581-0

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

415-21

issue

3

eissn

0920-8569

issn

1572-994X

journal_volume

42

pub_type

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