Publications

diversity and prevalence of brazilian bipartite begomovirus species associated to tomatoes.	information on the distribution and prevalence of the economically destructive begomovirus species and recombinant forms infecting fresh-market and processing tomato crops in brazil is crucial in guiding breeding programs and also to understand the evolutionary mechanisms associated with the upsurge of so many species and quasi-species comprising this unique disease complex. an extensive survey was carried out over 3 years (between 2002 and 2004) aiming to study the diversity of begomoviruses in ...	2008	18175211
further characterization of tomato-infecting begomoviruses in brazil.	tomato cultivation in brazil is threatened by a number of tomato-infecting viruses belonging to the genus begomovirus of the family geminiviridae. here, we report the full dna-a sequences of three brazilian begomoviruses: a potentially new tomato-infecting viruses, tomato interveinal chlorosis virus (toicv), and two previously proposed begomoviruses for which only partial dna-a sequences are available in the databases: tomato mottle leaf curl virus (tmolcv) and tomato golden vein virus (tgvv). t ...	2012	22218964
synonymous site variation due to recombination explains higher genetic variability in begomovirus populations infecting non-cultivated hosts.	begomoviruses are ssdna plant viruses that cause serious epidemics in economically important crops worldwide. non-cultivated plants also harbour many begomoviruses, and it is believed that these hosts may act as reservoirs and as mixing vessels where recombination may occur. begomoviruses are notoriously recombination-prone, and also display nucleotide substitution rates equivalent to those of rna viruses. in brazil, several indigenous begomoviruses have been described infecting tomatoes followi ...	2013	23136367
a study of weeds as potential inoculum sources for a tomato-infecting begomovirus in central brazil.	tomato severe rugose virus (tosrv) is the most important begomovirus species in brazilian tomato production. many weeds are associated with tomato, and some are hosts of begomoviruses. only one species of weed, nicandra physaloides, has been found to be infected with tosrv. in this study, four weed species were investigated for their capacity to be infected by tosrv and serve as a potential source of inoculum for tomato. begomoviruses from naturally infected crotalaria spp., euphorbia heterophyl ...	2013	23489523
recombination and pseudorecombination driving the evolution of the begomoviruses tomato severe rugose virus (tosrv) and tomato rugose mosaic virus (tormv): two recombinant dna-a components sharing the same dna-b.	begomoviruses are dicot-infecting, whitefly-transmitted viruses with a genome comprised of one or two molecules of circular, single-stranded dna. in brazil, tomato-infecting begomoviruses have emerged as serious pathogens since the introduction of a new biotype of the insect vector in the mid-1990's. tomato rugose mosaic virus (tormv) and tomato severe rugose virus (tosrv) are often found in tomato fields. the complete sequence of the dna-b components of tosrv and tormv show an identity of 98.2% ...	2014	24708727
tomato infection by whitefly-transmitted circulative and non-circulative viruses induce contrasting changes in plant volatiles and vector behaviour.	virus infection frequently modifies plant phenotypes, leading to changes in behaviour and performance of their insect vectors in a way that transmission is enhanced, although this may not always be the case. here, we investigated bemisia tabaci response to tomato plants infected by tomato chlorosis virus (tocv), a non-circulative-transmitted crinivirus, and tomato severe rugose virus (tosrv), a circulative-transmitted begomovirus. moreover, we examined the role of visual and olfactory cues in ho ...	2016	27529271