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Conference Proceedings
UWI Author(s)
Author, Analytic
Graham, A. P.; Martin, D. P.; Roye, Marcia E
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Paper/Section Title
Genomic recombination and phylogeny of two begomoviruses infecting Malvastrum americanum in Jamaica
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Proceedings Title
BITís 4th Annual World DNA and Genome Day Conference
Date of Meeting
April 25-27, 2013
Place of Meeting
Nanjing, China
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Notes
p. 197
Abstract
Two distinct full-length begomovirus DNA-A components and a DNA-B component were PCR amplified, cloned and sequenced from Jamaican Malvastrum americanum plants exhibiting yellow mosaic symptoms. Whereas one of the DNA-A components is from a potentially new species that we have tentatively named Malvastrum yellow mosaic Helshire virus (MaYMHV), the other DNA-A and the DNA-B form a cognate pair and represent a new virus species tentatively named Malvastrum yellow mosaic Jamaica virus (MaYMJV). The MaYMJV genome components together infected M. americanum and produced yellow mosaic symptoms similar to those seen in naturally infected plants. Both the MaYMJV and MaYMHV DNA-A components are typical of those of bipartite begomoviruses from the Western Hemisphere. The DNA-As of MaYMJV and MaYMHV are most closely related to each other (sharing 84% sequence identity) and cluster phylogenetically with begomoviruses found infecting malvaceous weeds in Cuba and Florida. The DNA-B component of MaYMJV is most similar to that of Sida golden mosaic virus-[USA:Florida] (SiGMV-[US:Flo]) and Sida golden mosaic Costa Rica virus-[Costa Rica] (SiGMCRV-[CR]). As with many other geminivirus species, the genomes of MaYMJV and MaYMHV bear traces of inter-species recombination.....
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