Bayesian analysis of 18SrDNA sequences generated from isolates (bold) plus a comprehensive representation of Phytomyxea sequences from GenBank (underlined). 44 sequences, 1795 positions. Bayesian support values shown if 0.70 or higher, or applied to a bipartition of particular interest. RAxML bootstraps shown for values of 50% and higher. Nodes with a support higher than 0.95/95 are marked by black circles. Further information to the isolates sequenced can be found in Additional file 1: Table S1.