02532nas a2200229   4500008004100000245015400041210006900195300001000264490000700274520149500281653013001776653009301906653007401999100001802073700001902091700002002110700001702130700001802147700001502165700001602180856010602196       2001                        eng d00aIdentification of optimal regions for phylogenetic studies on VP1 gene of foot-and-mouth disease virus: analysis of types A and O Argentinean viruses0 aIdentification of optimal regions for phylogenetic studies on VP  a31-450 v323 aAn analysis of the informative content of sequence stretches on the foot-and-mouth disease virus (FMDV) VPI gene was applied to two important viral serotypes: A and O. Several sequence regions were identified to allow the reconstruction of phylogenetic trees equivalent to those derived from the whole VPI gene. The optimal informative regions for sequence windows of 150 to 250 nt were predicted between positions 250 and 550 of the gene. The sequences spanning the 250 nt of the 3’ end (positions 400 to 650), extensively used for FMDV phylogenetic analyses, showed a lower informative content. In spite of this, the use of sequences from this region allowed the derivation of phylogenetic trees for type A and type O FMDVs which showed topologies similar to those previously reported for the whole VP1 gene. When the sequences determined for viruses isolated in Argentina, between 1990 and 1993, were included in these analyses, the results obtained revealed features of the circulation of type A and type O viruses in the field, in the months that preceded the eradication of the disease in this country. Type A viruses were closely related to an Argentinean vaccine strain, and defined an independent cluster within this serotype. Among the type O viruses analysed, two groups were distinguished; one was closely related to the South American vaccine strains, while the other was grouped with viruses of the O3 subtype. In addition, a detailed phylogeny for type A FMDV is presented.10aAmino Acid Sequence Animals Aphthovirus/classification/*genetics Base Sequence Capsid/chemistry/*genetics Capsid Proteins DNA10aComplementary/chemistry Molecular Sequence Data *Phylogeny Polymerase Chain Reaction RNA10aViral/chemistry/genetics Serotyping Viral Proteins/analysis/*genetics1 aNunez, J., I.1 aMartin, M., J.1 aPiccone, M., E.1 aCarrillo, E.1 aPalma, E., L.1 aDopazo, J.1 aSobrino, F.  uhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=11254175