molecular characterization and phylogeny of two begomoviruses infecting malvastrum americanum in jamaica: evidence of the contribution of inter-species recombination to the evolution of malvaceous weed-associated begomoviruses from the northern caribbean.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 ...201020024609
mixed infection of sida jamaicensis in jamaica reveals the presence of three recombinant begomovirus dna a components.begomoviruses impose serious constraints on agriculture throughout the temperate, tropical and subtropical regions. previously, we characterised a sida golden yellow vein virus isolate, sigyvv-[jm:lig2:08] (hq009519-20) from a symptomatic sida jamaicensis plant. with the aim of establishing whether it was hosting a mixed infection that could facilitate recombination, pcr-rflp was done on dna extracted from this plant, and the results suggested the presence of two additional genetically distinct ...201424687859
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