Tobamoviruses have probably co-diverged with their eudicotyledonous hosts for at least 110 million years.

ABSTRACT: A phylogeny has been calculated by maximum likelihood comparisons of the concatenated consensus protein sequences of 29 tobamoviruses shown to be non-recombinant. This phylogeny has statistically significant support throughout, including its basal branches. The viruses form eight lineages that are congruent with the taxonomy of the hosts from which each was first isolated and, with the exception of three of the twenty-nine species, all fall into three clusters that have either asterid or rosid or caryophyllid hosts (i.e. the major subdivisions of eudicotyledonous plants). A modified Mantel permutation test showed that the patristic distances of virus and host phylogenies are significantly correlated, especially when the three anomalously placed viruses are removed. When the internal branch

SUBMITTER: Gibbs AJ 

PROVIDER: S-EPMC5014485 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature