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 ... | 2010 | 20024609 |