Neighbour-joining dendogram showing the relationship of translated ws/dgat sequences (272 amino acids positions) obtained from Patagonian soils with reference sequences. The tree was calculated with a representative of each sequence type defined at 0.01 distance cut-off. For environmental sequence types, numbers in parenthesis indicate the accession numbers given in GenBank. Total number of sequences belonging to the same sequence type in the corresponding library from which they were retrieved is indicated in < and > symbols. AtfA from Acinetobacter baylyi ADP1 was used as outgroup. Relevant bootstrap values (1,000 replicates) higher than 50% are shown.