FIG 2.
Phylogeny of phototrophy-related genes. The pufM gene (A) and bchY gene (B) phylogeny of the newly obtained Limnohabitans sequences (in bold) was determined with sequences retrieved from the NCBI RefSeq database. The pufM analysis allowed affiliation of environmental pufM clones from lakes in northern Germany (17), lakes in Austria (37), and the estuarine region of the East China Sea (67) with the genus Limnohabitans. The tree was calculated from amino acid alignments using the maximum likelihood approach with general time-reversible plus invariant plus γ distribution and χ2 statistics for branch support.