Organizing co mmittee

 
 

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Poster presentation 
191 
MICROORGANISMS IN SALINE SOIL AND THEIR 
ECOLOGICAL SIGNIFICANCE 
R. Kuralova
1
, M. Narmukhamedova
2
, A. Usmonkulova
2
 
1) Doctoral student at the Department of Biology of Gulistan State University 
2) Institute of Microbiology of the Academy of Sciences, Tashkent, Uzbekistan 
 
We can see that the beneficial microorganisms in the soil serve as the main medium 
in providing the nutrient elements necessary for plant growth and development, which 
in turn, is important in improving the ecological condition of the soil. However, their 
such properties and possibilities have not yet been fully utilised, especially in conditions 
of saline soil. Based on this, in this study, it is important to identify the types of 
microorganisms in the composition of saline soil.
This research work was carried out in the field of the farm “Boyovut zakhmatkash 
yeri” in Bayovut district of Syrdarya oblast. So, a soil sample from a layer of 0-30 cm of 
the saline farm field was taken with the aim of microbiological analysis and 
identification of endemic microorganisms.
Clean colonies of corresponding microorganisms growing on the surface of the 
nutrient medium were separated and identified according to morphological-cultural and 
biochemical features [1, 2]. According to the results obtained, the soil sample contained 
Rodococcus, Bacillus, Sphingomonas, Pseudomonas
genus bacteria types and fungi of 
Mucor
genus. 
In the examined soil sample, microorganisms that grew in high titer were identified 
by generation and type using the classical microbiological and MALDI-Toff 
spectrometry method.
According to the results of the completed scientific research, it was noted that the 
contents of nitrogen fixator, phosphomobilizing agent, nitrification bacteria and 
actinomycetes in the examined soil sample are very low. At the same time, it was found 
that saline soil contains microorganisms of biological and ecological significance. These 
include 
B. subtilis
type. The strains of this bacterium have been used in agriculture, 
medicine, veterinary fields. The strains of this bacterium is importance in increasing the 
resistance of plants to abiotic factors, including saline and pathogenic organisms, and in 
creating new biological preparations on its base. This in turn can help improve the 
biological and ecological characteristics of saline soils by increasing their fertility.