Abstract
The aim of this study was to analyze the rhizosphere of duckweed as a site of active production of auxins of bacterial origin, primarily indole-3-acetic acid (IAA). IAA production was tested on 21 different bacterial strains. Four bacterial strains: Pseudomonas oryzihabitans 15, Pseudomonas putida 23, Hafnia paralvei 43 and Pseudomonas yamanorum 47 were selected based on increased IAA production compared to other strains tested. These strains showed continuous production of IAA even under unfavorable conditions: in acidic and basic environments, as well as in hypersaline environments. Our results suggest that these strains may have biotechnological applications in plant protection and increase yields through auxin production as central regulators of plant growth and development.
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