In this study, Cupriavidus basilensis strain r507 and Pseudomonas vancouverensis strain m318 strains was successfully isolated from P. vittata and P. multifida, which showed several promising potential traits that may facilitate As phytoremediation, such as higher As tolerance, with aioA-genes, As oxidation, siderophore and IAA secretion, high affinity to P. vittata. Long-term field trials demonstrated that inoculation with strain r507 and strain m318 increased the As(III)-oxidase gene in the rhizospheres of As hyperaccumulators resulting to an improved As phytoextraction. This research sheds light on the combination of As hyperaccumulators and rhizobacteria as the efficient methods of arsenic phytoextraction through co-cultivation. Further studies exploring efficient rhizobacteria and plant-microbe interactions at the laboratory- and field-scale are needed
to optimize the efficacy of this method.
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