Fig. 4 in Sex or no sex? Group I introns and independent marker genes reveal the existence of three sexual but reproductively isolated biospecies in Trichia varia (Myxomycetes)

Fig. 4 Simplified SSU phylogeny showing distribution of IC1 and IE class introns at position S956 in myxomycetes. Tree topology was derived from published SSU phylogenies (Fiore-Donno et al. 2010, 2012, 2013) and the tree presented in Supplementary Fig. S1 of this study. Trichia varia group 1 is represented by a specimen with an intron lacking an HEG; group 2a is represented by a specimen with a HEG-containing intron. Taxa printed in red and marked with "IC1" carry IC1 introns; those printed in blue and marked with "IE" carry IE introns. Nodes marked by dots received support of both Bayesian posterior probability>0.70 and bootstrap replicates>50 (Color figure online)