Figure 6.

Phylogenetic relationships of selected marine stramenopiles (MAST). The tree was constructed under maximum likelihood using an alignment of 927 unambiguous positions under the General Time Reversible (GTR)+I+Gamma model of sequence evolution. The tree contains full-length sequence representatives from all (except MAST-10) MAST clades and ‘mystery heterokont' clades (Richards and Bass, 2005). A separate RAxML tree based on a smaller number of characters to accommodate the MAST-10 clade (data not shown) confirmed that this was not a member of any of the new MAST clades described in this study. MAST clades are labeled in accordance with the naming scheme established by Massana et al. (2004). For more information see Figure 4.