Global analysis of plastid diversity reveals apicomplexan-related lineages in coral reefs

Figure 1. Phylogeny of novel ARL plastids and their environmental distribution. (A) Rooted phylogeny of plastid 16S rRNA showing the positions of all new apicomplexanrelated lineages (ARL, white type on black). For each plastid lineage, the number of environmental sequences detected is shown in the grey box (for alveolates this includes all sequences identified, for other groups only sequences detected in the automated search). Rappemonads and unidentified clone S25_1200 fell within the haptophytes in these analyses, and red algae were paraphyletic. The tree was constructed with RAxML and numbers at nodes correspond to support from rapid bootstrap/PhyML SH-like aLRT/MrBayes posterior probability when greater than 50/0.90/0.95 (supports inside ARL-I and ARL-V clades were omitted for clarity). Black dots indicate complete support. (B) Global distribution of ARL-I (Vitrella), ARL-III (Chromera) and ARL-V from environmental 16S and 18S rRNA sequences. Current Biology Vol 22 No 13 R518