FIG. 2.

Phylogenetic positions of OCS and OM plastid rDNA clone sequences related to members of the class Prymnesiophyceae. This phylogenetic tree was constructed by the maximum-likelihood method (fastDNAml [43]). Bootstrap values (100 replicates) from both distance (above each node) and maximum-parsimony (below each node) analyses are shown. A mask of 750 nucleotides (nucl.), corresponding to the 5′ end of the plastid SSU rRNA gene, was employed. The plastid (pt) SSU rRNA gene sequences from cryptophyte algae G. theta and R. salina were used to root the phylogenetic tree.