“…Acetobacter diazotrophicus that was later renamed Gluconacetobacter diazotrophicus was considered as the first PGPB representative of the family Acetobacteraceae to be reported with the capacity of nitrogen fixation [7][8][9]. There are lots of reports on the plant growth promoting mechanisms of G. diazotrophicus as well as its different kinds of isolation sources [5,[10][11][12][13]. After the introduction of novel nitrogen-fixing acetic acid bacteria associated with coffee plants of the two species, G. johannae and G. azotocaptans, G. azotocaptans strain DS1 was reported to show additional plant growth promoting mechanisms such as producing IAA (indole-3-acetic acid, heteroauxin), solubilizing phosphate, and providing biological control against several fungal pathogens and to promote the growth of some corn varieties [14][15][16].…”