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Combined Effect of PGPB Strains Pseudomonas Plecoglossicida 2,4-D and Humic Substances on the Growth and Content of Photosynthetic Pigments and Phytohormones in Wheat Plants in Drought Conditions

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  • Plant Growth Regulators
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Russian Agricultural Sciences Aims and scope

Abstract

The aim of the study was to study the effect of bacteria that stimulate plant growth and humic substances on the content of chlorophyll, nitrogen balance index, cytokinin concentration, and abscisic acid in wheat plants grown in drought conditions. The accumulation of the raw mass of wheat plants during treatment with a strain of Pseudomonas plecoglossicida 2,4-D bacteria and humic substances with a deficiency of soil moisture is shown. Stimulation of plant growth is associated with the activation of root growth, which led to an increase in the nitrogen balance index and chlorophyll concentration in the treated plants. The detected increase in the concentration of chlorophyll in plants treated with P. plecoglossicida 2,4-D correlated with a decrease in the content of abscisic acid in shoots, and that in plants treated with humates correlated with an increase in cytokinins in shoots. A higher efficiency of plant treatment with a combination of bacteria and humic substances than any of them individually may be associated with the additive effect of these treatments on hormonal balance.

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Funding

This research was funded by the Russian Science Foundation, grant number 22-26-00147, https://rscf.ru/en/project/22-26-00147/ accessed on 10 January 2022.

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  1. Ufa Institute of Biology, Ufa Federal Research Center, Russian Academy of Sciences, 450054, Ufa, Russia

    A. V. Feoktistova, M. D. Timergalin, T. V. Rameev & S. P. Chetverikov

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  1. A. V. Feoktistova
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  2. M. D. Timergalin
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Correspondence to A. V. Feoktistova.

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Feoktistova, A.V., Timergalin, M.D., Rameev, T.V. et al. Combined Effect of PGPB Strains Pseudomonas Plecoglossicida 2,4-D and Humic Substances on the Growth and Content of Photosynthetic Pigments and Phytohormones in Wheat Plants in Drought Conditions. Russ. Agricult. Sci. 49 (Suppl 1), S81–S88 (2023). https://doi.org/10.3103/S1068367423070297

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