期刊
MICROORGANISMS
卷 9, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms9081667
关键词
biofertilization; biocontrol; phytopathogen; rhizobacteria; plant growth promotion
类别
资金
- Russian Foundation for Basic Research [19-316-60001]
The biocompatibility of microorganisms isolated from natural sources in Kemerovo Oblast-Kuzbass led to the creation of three microbial consortia, each optimized for maximum biomass growth. The microorganisms in these consortia exhibited high antagonistic activity against various pathogenic strains, and the addition of microalgae hydrolyzate significantly increased their concentration, confirming the feasibility of using it in biofertilizers.
Determination of the biocompatibility of microorganisms isolated from natural sources (Kemerovo Oblast-Kuzbass) resulted in the creation of three microbial consortia based on the isolated strains: consortium I (Bacillus pumilus, Pediococcus damnosus, and Pediococcus pentosaceus), consortium II (Acetobacter aceti, Pseudomonas chlororaphis, and Streptomyces parvus), and consortium III (Amycolatopsis sacchari, Bacillus stearothermophilus; Streptomyces thermocarboxydus; and Streptomyces thermospinisporus). The nutrient media composition for the cultivation of each of the three studied microbial consortia, providing the maximum increase in biomass, was selected: consortium I, nutrient medium 11; consortium II, nutrient medium 13; for consortium III, nutrient medium 16. Consortia I and II microorganisms were cultured at 5-25 degrees C, and consortium III at 50-70 degrees C. Six types of psychrophilic microorganisms (P. pentosaceus, P. chlororaphis, P. damnosus, B. pumilus, A. aceti, and S. parvus) and four types of thermophilic microorganisms (B. stearothermophilus, S. thermocarboxydus, S. thermospinisporus, and A. sacchari) were found to have high antagonistic activity against the tested pathogenic strains (A. faecalis, B. cinerea, E. carotovora, P. aeruginosa, P. fluorescens, R. stolonifera, X. vesicatoria. pv. Vesicatoria, and E. aphidicola). The introduction of microalgae hydrolyzate increased the concentration of microorganisms by 5.23 times in consortium I, by 4.66 times in consortium II, by 6.6 times in consortium III. These data confirmed the efficiency (feasibility) of introducing microalgae hydrolyzate into the biofertilizer composition.
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