C
César A. D. Xavier
Researcher at Universidade Federal de Viçosa
Publications - 23
Citations - 407
César A. D. Xavier is an academic researcher from Universidade Federal de Viçosa. The author has contributed to research in topics: Begomovirus & Plant virus. The author has an hindex of 7, co-authored 20 publications receiving 317 citations. Previous affiliations of César A. D. Xavier include United States Department of Agriculture & North Carolina State University.
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Journal ArticleDOI
Brazilian Begomovirus Populations Are Highly Recombinant, Rapidly Evolving, and Segregated Based on Geographical Location
Carolina S. Rocha,Gloria P. Castillo-Urquiza,Alison T. M. Lima,Fabio Nascimento da Silva,César A. D. Xavier,Braz T. Hora-Júnior,José E. A. Beserra-Júnior,Antonio Wilson de Oliveira Malta,Darren P. Martin,Arvind Varsani,Arvind Varsani,Poliane Alfenas-Zerbini,Eduardo S. G. Mizubuti,F. Murilo Zerbini +13 more
TL;DR: Assessment of the genetic structure of begomovirus populations infecting tomatoes and noncultivated hosts in southeastern Brazil finds that most species detected have obvious interspecies recombinants and species identified in tomato have probable parental viruses from non Cultivated hosts.
Journal ArticleDOI
Synonymous site variation due to recombination explains higher genetic variability in begomovirus populations infecting non-cultivated hosts.
Alison T. M. Lima,Roberto Ramos Sobrinho,Jorge González-Aguilera,Carolina S. Rocha,Sarah Jacqueline Cavalcanti da Silva,César A. D. Xavier,Fabio Nascimento da Silva,Siobain Duffy,F. Murilo Zerbini +8 more
TL;DR: The results reinforce the assertion that infection of non-cultivated plant species leads to higher levels of standing genetic variability, and indicate that recombination, not adaptive selection, explains the higher begomovirus variability in non- Cultivated hosts.
Journal ArticleDOI
Contrasting genetic structure between two begomoviruses infecting the same leguminous hosts
Roberto Ramos Sobrinho,César A. D. Xavier,Hermano Monteiro de Barros Pereira,Gaus Silvestre de Andrade Lima,Iraildes Pereira Assunção,Eduardo S. G. Mizubuti,Siobain Duffy,Francisco Murilo Zerbini +7 more
TL;DR: For each begomovirus species, similar genetic variation between populations infecting cultivated and non-cultivated hosts was found, indicating that the presumed genetic variability of the host did not a priori affect viral variability.
Journal ArticleDOI
The ever increasing diversity of begomoviruses infecting non‐cultivated hosts: new species from Sida spp. and Leonurus sibiricus, plus two New World alphasatellites
Camila G. Ferro,João Paulo Santos da Silva,César A. D. Xavier,Márcio Tadeu Godinho,Alison T. M. Lima,Alison T. M. Lima,Talita Bernardon Mar,Douglas Lau,Francisco Murilo Zerbini +8 more
TL;DR: To further characterise the diversity of begomoviruses infecting two major weed genera, Sida and Leonurus, DNA extracted from samples collected in the states of Rio Grande do Sul, Parana and Mato Grosso do Sul during the years 2009–2011 indicated the presence of six bipartiteBegomovirus species and two alphasatellites.