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The Prokaryotic Complex of Modern and Buried Soils on the Kamchatka Peninsula. FORESTS 2022. [DOI: 10.3390/f13071066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A prokaryotic heterotrophic mesophilic community was studied in volcanic soil samples from Kamchatka. A phylogenetic and physiological characterization of the prokaryotic complex of modern and buried soils of the Kamchatka Peninsula is given. Volcanic Paleolithic soils (2500 and 11,300 years old) and their modern equivalents were investigated. It was found that the biomass of metabolically active prokaryotes in modern volcanic and Paleolithic soils reached 50 and 40 µg/g, respectively. The proportion of archaea in the metabolically active prokaryotic complex varied from 20% to 30% and increased in variants with the application of the nitrogen-containing biopolymer chitin. The application of the additional resource to paleovolcanic soils led to an incremental increase in the proportion of metabolically active prokaryotes, which reached 50% of the total prokaryotic biomass detected, indicating the high metabolic potential of the considered soils. Phylogenetic structure characteristics of the prokaryotic metabolically active component of modern and buried volcanic soil were established by molecular biology methods (metagenomic analysis, FISH method). The phylum Proteobacteria (74%), Acidobacteria, and Actinobacteria (14% combined) were dominant in modern soils; phylum Acidobacteria (51.8%) was dominant in paleosoils, whereas Chloroflexi (21%) and Proteobacteria (9%) were subdominant. It was determined that the potential activity of the microbial hydrolytic community, as measured by the relative response to the added resource (chitin), was found to increase in a series from modern to paleovolcanic soil. It was demonstrated that several key genes of the nitrogen cycle responsible for the processes of molecular nitrogen fixation, nitrification, and denitrification (nifH, amoA, nirK) were present in both modern and buried horizons.
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Changes in the Phylogenetic Structure of the Metabolically Active Prokaryotic Soil Complex Induced by Oil Pollution. Microbiology (Reading) 2020. [DOI: 10.1134/s0026261720020083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Comparison of Diversity and Functions of Epiphytic Bacteria from Cultivated and Weed Plants in Agrocenoses. Microbiology (Reading) 2018. [DOI: 10.1134/s0026261718040057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Molecular analysis of the hydrolytic component of petroleum-contaminated soils and of soils remediated with chitin. Microbiology (Reading) 2017. [DOI: 10.1134/s0026261717030092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Characterization of the structure of the prokaryotic complex of Antarctic permafrost by molecular genetic techniques. Microbiology (Reading) 2016. [DOI: 10.1134/s0026261716010057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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