The complete nucleotide sequence and genomic organization of citrus leprosis associated virus, cytoplasmatic type (CiLV-C)

RC Pascon, JP Kitajima, MC Breton, L Assumpção… - Virus Genes, 2006 - Springer
RC Pascon, JP Kitajima, MC Breton, L Assumpção, C Greggio, AS Zanca, VK Okura…
Virus Genes, 2006Springer
Abstract The Citrus leprosis disease (CiL) is associated to a virus (CiLV) transmitted by
Brevipalpus spp. mites (Acari: Tenuipalpidae). CiL is endemic in Brazil and its recently
spreading to Central America represents a threat to citrus industry in the USA. Electron
microscopy images show two forms of CiLV: a rare nuclear form, characterized by rod-
shaped naked particle (CiLV-N) and a common cytoplasmic form (CiLV-C) associated with
bacilliform-enveloped particle and cytoplasmic viroplasm. Due to this morphological feature …
Abstract
The Citrus leprosis disease (CiL) is associated to a virus (CiLV) transmitted by Brevipalpus spp. mites (Acari: Tenuipalpidae). CiL is endemic in Brazil and its recently spreading to Central America represents a threat to citrus industry in the USA. Electron microscopy images show two forms of CiLV: a rare nuclear form, characterized by rod-shaped naked particle (CiLV-N) and a common cytoplasmic form (CiLV-C) associated with bacilliform-enveloped particle and cytoplasmic viroplasm. Due to this morphological feature, CiLV-C has been treated as Rhabdovirus-like. In this paper we present the complete nucleotide sequence and genomic organization of CiLV-C. It is a bipartite virus with sequence similarity to ssRNA positive plant virus. RNA1 encodes a putative replicase polyprotein and an ORF with no known function. RNA2 encodes 4 ORFs. pl5, p24 and p61 have no significant similarity to any known proteins and p32 encodes a protein with similarity to a viral movement protein. The CiLV-C sequences are associated with typical symptoms of CiL by RT-PCR. Phylogenetic analysis suggests that CiLV-C is probably a member of a new family of plant virus evolutionarily related to Tobamovirus.
Springer
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