Figure 3
From: Predicting blooms of toxic cyanobacteria in eutrophic lakes with diverse cyanobacterial communities
Phylogenetic tree obtained with mcyA gene fragments corresponding to the sequences obtained from DGGE bands. Numbers at nodes represent branch frequencies. Evolutionary trees, involving 75 sequences, were estimated by the PhyML program49, using the Maximum Likelihood method based on the General Time Reversible model with a discrete Gamma distribution model for evolutionary rate differences among sites (4 categories (+G, Gamma shape parameter = 1.602)). Branch frequencies were calculated by aLRT test, according to Anisimova and Gascuel50. The tree with the highest log likelihood (−2148.459) is drawn to scale, with branch lengths measured in the number of substitutions per site. The rate variation model allowed for some sites to be evolutionarily invariable; however, no such sites were revealed (+I, Proportion of invariant sites = 0.000).
