Biomics

Bacteria Pseudomonas sp. have great potential as rhizospheric bacteria that stimulate plant growth (PGPR) (including for obtaining microbiological biological products) to protect plants from phytopathogens, heavy metals, increase plant yield and plant growth under stress conditions. The purpose of this work was to determine the inhibitory concentration of cadmium salts on the growth of the strain Pseudomonas sp. OBA 2.4.1 and to analyze its effect on the growth and germination of seeds of pea (Pisum sativum L.) at different concentrations of cadmium salts. The studied strain was identified as Pseudomonas sp., its siderophoric activity and the ability to form biofilms were shown. In addition, treatment with this strain of seeds of pea plants led to an increase in the average length of seedlings by 2.6 times compared with untreated seeds. When growing pea seeds with Pseudomonas treatment in the presence of 100 µM of CdCl2, the length of seedlings increased by 62%, at 200 µM – by 20%, at 300 microns – by 36%, at 400 µM – by 51%, at 500 µM – by 118% relative to control uninoculated seeds. The results obtained show that the strain Pseudomonas sp. OBA 2.4.1 improves the growth and development of pea Pisum sativum under cadmium stress, which can be used to create complex biological products designed both to protect agricultural plants from the effects of heavy metals and for use in bioremediation.

Pseudomonas, PGPR, heavy metals, cadmium, Legume family, Pisum sativum L., biofilms, phosphatemobilization, siderophoric activity, bioremediation

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