Use of strain <i>Pseudomonas</i> sp. OBA 2.4.1 for pre-sowing treatment of pea seeds (<i>Pisum sativum</i> L.) in the presence of heavy metals and glyphosphate

The effect of the PGPB strain of bacteria Pseudomonas sp. was studied. OBA 2.4.1, resistant to NiCl2 (up to 3 mM), Pb(CH3COO)2 (up to 5 mM) and glyphosate (up to 8 mg/ml), on Pisum sativum L. plants at different concentrations of HMs and herbicide. It was found that the strain under study had a positive effect on the length of the roots of pea plant seedlings in the presence of HM, which indicates an increase in the plant’s resistance to stress caused by exposure to nickel and lead. However, this effect was not recorded in the experimental version with the addition of glyphosate, which confirmed its high toxicity. The results obtained indicate that the strain Pseudomonas sp. OBA 2.4.1 promoted the growth of Pisum sativum L. under stress exposure to nickel and lead, which can be used in the development of complex-action biological products intended both to protect agricultural plants from the effects of heavy metals and to reclaim contaminated soils.