The article presents data on the screening of rhizobacteria and active isolates isolated from the humus layer of natural humus soils against phytopathogenic fungi Rhizoctonia solani and Fusarium oxysporum and their resistance to various concentrations of NaCl (0%, 1%, 5%, 7%, 10%). The results of studies on the synthesis of phytohormones with the properties of microorganisms that enhance plant growth and development are presented. Antagonistically active bacterial strains that grew even at high salt concentrations were identified using MALDI-TOF analysis. They were identified as XD 4.3 Bacillus subtilis and XDN6 Bacillus cereus, respectively.
References
[1]
Xramova, Y.A., Jardekiy, S.S. and Maksimova, N.P. (2006) Synthesis of Indole-3-Acetic Acid by Rhizosphere Bacteria Pseudomonas mendocina Characteristics of Regulatory Mutants. Bulletin of BSU, 2, 69-73.
[2]
Gordon, S.A. and Weber, R.P. (1951) Colorimetric Estimation of Indoleacetic Acid. PlantPhysiology, 26, 192-195. https://doi.org/10.1104/pp.26.1.192
[3]
Weger, L.A., Bij, A.J., Dekkers, L.C., Simons, M., Wijffelman, C.A. and Lugtenberg, B.J.J. (1995) Colonization of the Rhizosphere of Crop Plants by Plant-Beneficial Pseudomonads. FEMSMicrobiologyEcology, 17, 221-227. https://doi.org/10.1111/j.1574-6941.1995.tb00146.x
[4]
Zhang, Q. and White, J.F. (2021) Bioprospecting Desert Plants for Endophytic and Biostimulant Microbes: A Strategy for Enhancing Agricultural Production in a Hotter, Drier Future. Biology, 10, Article No. 961. https://doi.org/10.3390/biology10100961
[5]
Tadych, M. and White, J.F. (2019) Endophytic Microbes. In: Schmidt, T.M., Ed., Encyclopedia of Microbiology, 4th Edition, Elsevier, 123-136. https://doi.org/10.1016/b978-0-12-809633-8.13036-5
[6]
Bhattacharyya, P.N. and Jha, D.K. (2011) Plant Growth-Promoting Rhizobacteria (PGPR): Emergence in Agriculture. WorldJournalofMicrobiologyandBiotechnology, 28, 1327-1350. https://doi.org/10.1007/s11274-011-0979-9
[7]
Lim, S.M., Yoon, M., Choi, G.J., Choi, Y.H., Jang, K.S., Shin, T.S., etal. (2017) Diffusible and Volatile Antifungal Compounds Produced by an Antagonistic Bacillusvelezensis G341 against Various Phytopathogenic Fungi. ThePlantPathologyJournal, 33, 488-498. https://doi.org/10.5423/ppj.oa.04.2017.0073
[8]
Lugtenberg, B. and Kamilova, F. (2009) Plant-Growth-Promoting Rhizobacteria. Annual Review of Microbiology, 63, 541-556.
[9]
Sanjay, A., Purvi, N.P., Meghna, J.V. and G., G.R. (2014) Isolation and Characterization of Endophytic Bacteria Colonizing Halophyte and Other Salt Tolerant Plant Species from Coastal Gujarat. AfricanJournalofMicrobiologyResearch, 8, 1779-1788. https://doi.org/10.5897/ajmr2013.5557
[10]
Insam, H. (1996) Microorganisms and Humus in Soils. In: Piccolo, A., Ed., HumicSubstancesinTerrestrialEcosystems, Elsevier, 265-292. https://doi.org/10.1016/b978-044481516-3/50007-4