Skip to main content
. Author manuscript; available in PMC: 2015 Jun 5.
Published in final edited form as: Protist. 2014 Oct 13;165(6):779–804. doi: 10.1016/j.protis.2014.10.001

Figure 2.

Figure 2

Phylogenetic tree of the D1–D2 LSU rDNA utilizing all available Alexandrium tamarense species complex sequences as well as those from other Alexandrium species sequences present in GenBank. RAxML CAT analyses with 1000× bootstrap support, which is shown at the nodes of the tree. To simplify the analysis, the sequence data were filtered to remove sequences with differences of ≤2bp (see Methods). Once these groups were sorted, one representative sequence from each was selected for inclusion in the phylogenetic analysis. N = the number of sequences of each species included in the analysis. Groups that possess the sxtA4 gene and produce saxitoxins are marked as well as those which are non toxic.