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. 2019 Jan 9;9:3305. doi: 10.3389/fmicb.2018.03305

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Copyright © 2019 Shates, Sun, Malmstrom, Dominguez and Mauck.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Radial, unrooted trees illustrating results of the maximum likelihood phylogenetic analyses of Potyvirus nucleotide sequences. For PRSV (A), and ZYMV (B) the GTR + G + T model was used. Color coding has been applied to aid interpretation of sequence origins (orange = C. foetidissima, blue = C. palmata, red = other sequences from United States isolates). One hundred bootstrap re-samples were performed for each analysis. Branch lengths are measured in the expected number of substitutions per site. Only nodes with bootstrap values ≥70 are shown; nodes with bootstrap values <70 are collapsed and not shown.