Two recently isolated bacterial endophytes and their ACC deaminase minus mutants were used in this study. P. fluorescens YsS6 and Pseudomonas migulae 8R6 were initially isolated from tomato plants grown in soils collected from France and
Canada, respectively. Both strains possess ACC deaminase, promote root elongation in canola (Brassica campestris) seedlings, produce siderophores, synthesize indoleacetic acid (IAA) and solubilize phosphate