Rhizosphere K-mobilizing bacteria Bacillus capability of glyphosate metabolization with methylglycyn formation
https://doi.org/10.29235/1561-8323-2025-69-3-258-264
Abstract
Rhizosphere bacteria Bacillus, preserved in the of the Institute for Soil Science and Agrochemistry, were characterized as promising plant inoculants under intensive application of herbicide glyphosate. Bacteria strains Bacillus K-32, K-54, K-62, K-65, K-81, and Kт were found to metabolize glyphosate without the formation of aminomethylphosphonic acid. Bacteria strains Bacillus K-32, K-54, K-62, K-65, K-81 and Kт are capable of glyphosate decomposition with the formation of safe chemical products. These chemical products include sarcosin (methylglycine) and inorganic phosphate (Pi). The destruction activities of Bacillus strains were calculated on the basis of the accumulation of inorganic phosphate in culture liquids. Under glyphosate concentration of 300 mg/l, the destruction activities of Bacillus K-32, K-54, K-62, K-65, K-81, and Kт strains were equal to: 50.6, 43.9, 48.4, 46.3, 65.4 and 64.4 %, respectively. Under glyphosate content 500 mg/l, the destruction activities were equal to: 40.6, 38.6, 40.1, 42.2, 58.4 and 48.1 % respectively. The application of potassium-mobilizing rhizobacteria Bacillus as inoculants resulted in a significant stimulation effect on plants at high diapason of glyphosate content in the soil (0–50 l/ha). This stimulation effect is manifested in plant growth (stems and roots) and the improvement of plant potassium nutrition.
About the Authors
V. V. Lapa
Institute for Soil Science and Agrochemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Lapa Vitaly V. – Academician, D. Sc. (Agrarian), Professor, Chief Researcher
90, Kazinets Str., 220108, Minsk
N. A. Mikhailovskaya
Institute for Soil Science and Agrochemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Mikhailovskaya Natalia A. – Ph. D. (Agrarian), Associate
Professor, Head of the Laboratory
90, Kazinets Str., 220108, Minsk
T. V. Pahirnitskaya
Institute for Soil Science and Agrochemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Pahirnitskaya Tatsiana V. – Junior Researcher
90, Kazinets Str., 220108, Minsk
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