Strain Hartmannibacter diazotrophicus E19T isolation, as well as its complete phenotypic, chemotaxonomic, phylogenetic and genomic characterization was previously described (Suarezet al., 2014a). ACC-deaminase activity of strain E19T in DF minimal salt medium supplemented with ACC under different salt concentration of 1, 2 and 3% NaCl were 0.56 0.20 1.29 0.82 and 2.60 1.2 mmol a-ketobutyrate mg protein1 h1. Strain E19T presented very limited growth in LB broth supplemented with L-tryptophan (100 mg ml1), independently from NaCl concentration, and no IAA production was observed.