Figure 3.

Phylogenetic tree built through sequence analysis of 400 bp of the 16S rRNA gene of 36 of the isolated Methylobacterium spp. by the Neighbor-joining method. Beijerinckia and Methylocella were used as outgroups. Bootstrap values higher than 40 are shown on the nodes' intersections (n = 1000 replicates). The isolates of the different hosts and origins are marked as follows: Rhizophora mangle at the location with an oil spill □, Rhizophora mangle at the location without an oil spill ■, Laguncularia racemosa at the location with an oil spill ▵, Laguncularia racemosa at the location without an oil spill ▴, Avicennia spp. at the location with an oil spill ⚪, and Avicennia spp. at the location without an oil spill ⬤.