Journal of Siberian Federal University. Biology / Physiological and Biochemical Parameters of Phaseolus vulgaris L. ‘Elsa’ under Normal Conditions and under Salt Stress: Effects of Inoculation with Different Strains of the Endophytic Bacillus subtilis

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Issue
Journal of Siberian Federal University. Biology. 2025 18 (4)
Authors
Markova, Oksana V.; Garipova, Svetlana R.; Pusenkova, Ludmila I.
Contact information
Markova, Oksana V.: Ufa University of Science and Technology Ufa, Russian Federation; ; ORCID: 0009-0000-5881-7636; Garipova, Svetlana R.: Ufa University of Science and Technology Ufa, Russian Federation; ORCID: 0000-0002-0276-6689; Pusenkova, Ludmila I. : Bashkir Research Institute of Agriculture – Subdivision of the Ufa Federal Research Centre RAS Ufa, Russian Federation; ORCID: 0000-0001-6341-0486
Keywords
common bean; plant growth-promoting bacteria; salinity; malondialdehyde; water-holding capacity; hydration; proline
Abstract

Symbiosis of plants with endophytic bacteria increases their adaptive potential, stimulating growth and increasing resistance of plants to stress factors. At the same time, the responses of agricultural crop cultivars to inoculation with different strains are specific and may be dependent on the degree of stress. The purpose of the present study was to investigate the interactions of bean plants (Phaseolus vulgaris L. ‘Elsa’) with endophytic Bacillis subtilis strains 26D and 10–4 under optimal conditions and under sodium chloride salinization. The responses of plants to inoculation and salt stress were assessed by plant growth (length of shoots and roots, number of adventitious roots, leaf area, fresh weight of plants) and physiological and biochemical parameters (water content and water-holding capacity of roots, contents of malondialdehyde and proline in roots). The study showed that under optimal conditions both strains stimulated the growth of roots and shoots in 7-day-old seedlings. At Day 21 of plant growth, both strains contributed to an increase in the water-holding capacity in the roots and an increased content of proline in them, but they had different effects on the content of malondialdehyde and the accumulation of fresh biomass. Under salt stress, inoculation with either strain resulted in the reduced levels of proline and malondialdehyde and lower moisture content in the roots compared to the control with induced stress. The differences in plant responses to bacterial inoculation revealed in the current study provide a basis for further research of the effectiveness of cultivar–strain combinations of symbiotic partners

Pages
534–549
EDN
NBVIML
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/158028

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