Evolutionary analysis of Citrus tristeza virus outbreaks in Calabria, Italy: two rapidly spreading and independent introductions of mild and severe isolates
Articolo
Data di Pubblicazione:
2014
Citazione:
Evolutionary analysis of Citrus tristeza virus outbreaks in Calabria, Italy: two rapidly spreading and independent introductions of mild and severe isolates / Fontana, A.; Debreczeni, D. E.; Albanese, Giuliana Renata; Davino, S; Flores, R; Rubio, L. - In: EUROPEAN JOURNAL OF PLANT PATHOLOGY. - ISSN 0929-1873. - 140:3(2014), pp. 607-613. [10.1007/s10658-014-0489-3]
Abstract:
The evolution of Citrus tristeza virus (CTV) from outbreaks occurred in Calabria, Italy, was
compared with that of CTV outbreaks reported previously in other two proximal Italian
regions, Sicily and Apulia. Examination of four genomic regions (genes p20, p25 and p23, and one fragment of ORF1) showed two recombination events, and phylogenetic analysis disclosed two divergent CTV groups in Calabria: one formed by severe and the other by mild
isolates. This analysis, together with others involving population genetic parameters, revealed a low migration rate of CTV between these Italian regions, as well as significant differences
in selective pressures, epidemiology and demography, all affecting the genetic structure of these CTV populations.
compared with that of CTV outbreaks reported previously in other two proximal Italian
regions, Sicily and Apulia. Examination of four genomic regions (genes p20, p25 and p23, and one fragment of ORF1) showed two recombination events, and phylogenetic analysis disclosed two divergent CTV groups in Calabria: one formed by severe and the other by mild
isolates. This analysis, together with others involving population genetic parameters, revealed a low migration rate of CTV between these Italian regions, as well as significant differences
in selective pressures, epidemiology and demography, all affecting the genetic structure of these CTV populations.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
CTV; closterovirus; recombination; phylogeny; selection; migration phylogeography
Elenco autori:
Fontana, A.; Debreczeni, D. E.; Albanese, Giuliana Renata; Davino, S; Flores, R; Rubio, L
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