Back to Search
Start Over
Characterization of Rhynchosia yellow mosaic Yucatan virus, a new recombinant begomovirus associated with two fabaceous weeds in Yucatan, Mexico.
- Source :
-
Archives of virology [Arch Virol] 2010 Oct; Vol. 155 (10), pp. 1571-9. Date of Electronic Publication: 2010 Jun 24. - Publication Year :
- 2010
-
Abstract
- Rhynchosia minima (L.) DC. (Fabaceae) plants exhibiting bright golden mosaic symptoms were previously associated with begomovirus infection in Yucatan, México [1]. To characterize the begomovirus infecting these plants, the complete bipartite genome was cloned and sequenced. Sequence comparisons indicated that the virus was distinct from all other begomoviruses known to date, including those previously identified from symptomatic R. minima, and the name Rhynchosia yellow mosaic Yucatan virus (RhYMYuV) is proposed. Pairwise comparisons indicated that RhYMYuV DNA-A [2,597 nt, (EU021216)] and DNA-B [2,542 nt, (FJ792608)] components shared the highest nt sequence identity with Cabbage leaf curl virus (CaLCuV), 87% for component A and 71% for component B. Phylogenetic analysis indicated that both components of RhYMYuV are most closely related to other New World begomoviruses, having as closest relatives immediate outliers to the major Squash leaf curl virus (SLCV) clade. Recombination analysis of the RhYMYuV genome indicated that the DNA-A component has arisen through intermolecular recombination. R. minima plants inoculated with the monomeric clones developed a bright yellow mosaic similar to symptoms observed in naturally infected plants, confirming that the clones were infectious. Nicotiana benthamiana plants biolistically inoculated with monomeric clones developed curling and chlorosis in the newly emerging leaves. RhYMYuV was also detected in symptomatic Desmodium sect. Scorpiurus Benth. (Fabaceae) that were collected near the RhYMYuV-infected plants.
- Subjects :
- Begomovirus classification
Begomovirus genetics
Cloning, Molecular
Cluster Analysis
DNA, Viral chemistry
DNA, Viral genetics
Evolution, Molecular
Genome, Viral
Mexico
Molecular Sequence Data
Phylogeny
Recombination, Genetic
Sequence Analysis, DNA
Sequence Homology
Nicotiana virology
Begomovirus isolation & purification
Fabaceae virology
Plant Diseases virology
Subjects
Details
- Language :
- English
- ISSN :
- 1432-8798
- Volume :
- 155
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Archives of virology
- Publication Type :
- Academic Journal
- Accession number :
- 20574644
- Full Text :
- https://doi.org/10.1007/s00705-010-0730-0