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  • Title: Molecular characterization and experimental host range of an isolate of Macroptilium golden mosaic virus that infects Wissadula amplissima in Jamaica.
    Author: Collins A, Rehman MM, Chowda-Reddy RV, Wang A, Fondong V, Brown J, Roye M.
    Journal: Virus Res; 2010 Jun; 150(1-2):148-52. PubMed ID: 20347895.
    Abstract:
    Partial genome sequences for the tentative begomovirus Macroptilium golden mosaic virus (MGMV) have been previously reported and were originally obtained for an isolate that infected Macroptilium lathyroides in Jamaica. In this study, we PCR-amplified, cloned and determined the sequence for the complete genome of isolates of MGMV that we found infecting Wissadula amplissima collected from August Town and Spanish Town, Jamaica. Sequence analysis confirmed that MGMV is a distinct begomovirus species, based on the ICTV 89% rule for species demarcation. MGMV shared its highest nucleotide identity at 79% for DNA-A component and 66% for DNA-B component to Corchorus yellow spot virus [Mexico:Yucatan:2005]. The names Macroptilium golden mosaic virus [Jamaica1:Wissadula:AugustTown] (MGMV [JM1:Wd:AT]) and Macroptilium golden mosaic virus [Jamaica1:Wissadula:SpanishTown] (MGMV [JM1:Wd:ST]) are proposed herein for the MGMV isolates from August Town and Spanish Town, respectively. The genome organization of MGMV [JM1:Wd:AT] and MGMV [JM1:Wd:ST] is characteristic of Western Hemisphere bipartite begomoviruses. Excluding the replication enhancer protein (REn), all proteins encoded by the MGMV [JM1:Wd:AT] and MGMV [JM1:Wd:ST] genomes are most similar to their counterparts in Western Hemisphere begomoviruses. The REn proteins of MGMV [JM1:Wd:AT] and MGMV [JM1:Wd:ST], share greatest similarity to the REn protein of Corchorus yellow vein virus [Vietnam:Hoa Binh:2000], a New World-like begomovirus identified in Asia. Phylogenetic reconstruction places MGMV in a clade containing Potato yellow mosaic virus. Results of an experimental host range study indicated that MGMV [JM1:Wd:AT] can infect kidney bean, hot pepper and tomato.
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