FIG 6.

Phylogeny of the Endornaviridae. Sequences in gray denote unclassified viruses and sequences in bold refer to microalgal-associated viruses. Host lineages are indicated in circles to the right of major viral clades and correspond to fungi, land plants, protozoa, and microalgae. The new viral sequences identified in this study are indicated with circles. The Sichuan Alphaendornavirus cluster includes the diatom-associated RNA virus 15, previously reported from diatom-containing samples (18). The tree is mid-point rooted, and confident nodes (with SH-alrt likelihood ratio test values ≥80%) are represented as circles. The bar represents the number of amino acid substitutions per site.