Figure 1
From: Thermophilic fermentation of acetoin and 2,3-butanediol by a novel Geobacillus strain
Phylogenetic relationship between strain XT15 and Geobacillus species (with GenBank accession numbers) based on 16S rRNA sequences. The tree was constructed with the MEGA5 program using the neighbour-joining cluster algorithm. The numbers at the branches are bootstrap values (confidence limits). Bacillus subtilis was used as an outgroup to root the tree. Scale bar, 0.01 substitutions/site.