Morphophysiological Features of Some Cultivable Bacteria from Saline Soils of the Aral Sea Region

• Published in: Eurasian soil science Vol. 53; no. 1; pp. 90 - 96
• Main Authors: Begmatov, Sh. A., Selitskaya, O. V., Vasileva, L. V., Berestovskaja, Yu. Yu, Manucharova, N. A., Drenova, N. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2020; Springer; Springer Nature B.V
• Subjects: Adaptation; Bacteria; Biodiversity; Bioremediation; Carbon sources; Earth and Environmental Science; Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Halophilic bacteria; Microbiological strains; Microbiomes; Microorganisms; Phylogeny; Rehabilitation; Rhizosphere; Saline soils; Salt tolerance; Sodium chloride; Soil; Soil bacteria; Soil Biology; Soil microbiology; Soil microorganisms; Soils; Soils, Salts in; Strains (organisms); extreme ecosystems; halophiles; microbiome; salinization
• ISSN: 1064-2293; 1556-195X
• DOI: 10.1134/S1064229320010044

— The study of the microbiome of saline soils is of significant scientific and practical interest in relation to the capacity of these microorganisms for adaptation to extreme conditions of the environment. The isolation, identification, and study of the cultural-morphological and biochemical properties of the associative bacteria from the rhizosphere of Salicornia L., a common plant in the Aral region of Uzbekistan, have been performed. The dominant cultivable bacteria of the saline soil in the studied area are halophilic bacteria of the genera Halomonas and Planococcus belonging to different phylogenetic groups: the Gamma-proteobacteria and Firmicutes, respectively. The morphophysiological features of isolated strains have been studied; in particular, their salt tolerance and the possibility of utilizing various carbon sources. The strains grow well at NaCl concentrations of 8.0, 10.0, and 15.0%, though the growth and accumulation of biomass in cultures are not observed at NaCl concentrations of 20.0, 25.0, and 30.0%. The obtained data on the biodiversity of halophilic microorganisms in saline soils can be used in the diagnostics of the state of saline soils and for their bioremediation and rehabilitation.