Frontiers | The Photosynthetic Bacterium Rhodopseudomonas palustris Strain PS3 Exerts Plant Growth-Promoting Effects by Stimulating Nitrogen Uptake and Elevating Auxin Levels in Expanding Leaves
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A large number of promising PGPR candidates, such as those in the genera Bacillus, Pseudomonas, Azotobacter, and Azospirillum, have been isolated and characterized for their beneficial effects (Adesemoye et al., 2009; Bishnoi, 2015; Backer et al., 2018; Aeron et al., 2020).