Comparative Analysis of the Number and Structure of the Complexes of Microscopic Fungi in Tundra and Taiga Soils in the North of the Kola Peninsula

Korneikova, M. V.

doi:10.1134/s1064229318010106

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…Fungal biomass. In the studied substrates of the Barents Sea coast, biomass of mycobiota was less than in background landscapes of the Kola Peninsula [ 5 , 7 ], but it was 1.5–2 times higher than in soils of the city of Apatity, which is located farther south in the Murmansk region [ 21 ]. Apparently, this may be due to such limiting factors as heavy metal pollution by powerful enterprises in the cities of the Kola Peninsula [ 28 , 29 ].…”

Section: Discussionmentioning

confidence: 99%

“…Long-term studies of the chemical and biological properties of the region’s soils were carried out in the subaerial biotopes [ 3 , 4 , 5 ], while the subaqueous biotopes remain overlooked, although they have a significant length along the coast of the Barents Sea and are constantly under pressure from economic activities (construction of factories in the coastal zone, shipping, transportation cargo, and oil products, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Qualitative and Quantitative Characteristics of Soil Microbiome of Barents Sea Coast, Kola Peninsula

2021

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The soil microbiome of the Barents Sea coast of the Kola Peninsula is here characterized for the first time. The content of copies of ribosomal genes of archaea, bacteria, and fungi was determined by real-time PCR. Reserves and structure of biomass of soil microorganisms such as total biomass of fungi and prokaryotes, length and diameter of mycelium of fungi and actinomycetes, proportion of mycelium in biomass, number of spores and prokaryotic cells, proportion of small and large fungal propagules, and morphology of mycobiota spores were determined. The largest number of ribosomal gene copies was found for bacteria (from 6.47 × 109 to 3.02 × 1011 per g soil). The number of copies of ribosomal genes of fungi and archaea varied within 107–109 copies of genes/g soil. The biomass of microorganisms (prokaryotes and fungi in total) varied from 0.023 to 0.840 mg/g soil. The share of mycobiota in the microbial biomass ranged from 90% to 97%. The number of prokaryotes was not large and varied from 1.87 × 108 to 1.40 × 109 cells/g of soil, while the biomass of fungi was very significant and varied from 0.021 to 0.715 mg/g of soil. The length of actinomycete mycelium was small—from 0.77 to 88.18 m/g of soil, as was the length of fungal hyphae—an order of magnitude higher (up to 504.22 m/g of soil). The proportion of fungal mycelium, an active component of fungal biomass, varied from 25% to 89%. Most (from 65% to 100%) of mycobiota propagules were represented by specimens of small sizes, 2–3 microns. Thus, it is shown that, despite the extreme position on the mainland land of Fennoscandia, local soils had a significant number of microorganisms, on which the productivity of ecosystems largely depends.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Qualitative and Quantitative Characteristics of Soil Microbiome of Barents Sea Coast, Kola Peninsula

2021

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“…In the urban soils of Murmansk, a decrease in the number of gene copies of all groups of microorganisms was noted in comparison with the natural soil. The fungal biomass in the urban soils was less than in the natural Podzol soils of the Kola Peninsula [ 63 , 64 ] but 2–4 times higher compared to the other settlement of the region [ 65 ]. This is likely explained by the abundance and availability of organic matter [ 66 ] and relatively low pollution by heavy metals compared to Monchegorsk or Apatity settlements [ 67 ].…”

Section: Discussionmentioning

confidence: 99%

Urbanization Affects Soil Microbiome Profile Distribution in the Russian Arctic Region

Korneykova

Vasenev

Никитин

et al. 2021

IJERPH

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Urbanization in the Arctic results in considerable and still poorly known environmental consequences. The effect of urbanization on soil microbiome—an ecosystem component highly sensitive to anthropogenic disturbance—remains overlooked for the Arctic region. The research compared chemical and microbial properties of the natural Podzol soils and urban soils of Murmansk—the largest Arctic city. Particular attention was given to the profile distribution, which is almost completely ignored by most microbial studies. Soil microbiome was investigated by the quantitative indicators based on fluorescence microscopy (microbial biomass) and PCR real-time methods (amount of rRNA genes copies of archaea, bacteria, and fungi). The principal changes in urban soils’ properties compared to the natural references included a shift in pH and an increase in C and nutrients’ contents, especially remarkable for the subsoil. The numbers of rRNA genes copies of archaea, bacteria, and fungi in urban topsoils (106–1010, 109–1010, and 107–109, respectively) were lower than in Podzol; however, the opposite pattern was shown for the subsoil. Similarly, the total microbial biomass in urban topsoils (0.55–0.75 mg g−1) was lower compared to the 1.02 mg g−1 in Podzols, while urban subsoil microbial biomass was 2–2.5 times higher than in the natural conditions. Both for urban and natural soils and throughout the profiles, fungi were dominated by mycelium forms; however, the ratios of mycelium–spores were lower, and the amount of thin mycelium was higher in urban soils than in natural Podzols. Urbanization in the Arctic altered soil morphological and chemical properties and created a new niche for microbial development in urban subsoils; its contribution to biodiversity and nutrient cycling promises to become increasingly important under projected climate change.

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“…The number of microfungi in the forest soil was 2.3×10 4 CFU/g, which is lower than for the S-R zone, apparently because of the lack of anthropogenic substrates suitable for microfungi uncharacteristic for this forest soil (Marfenina et al 2002). In general, the forest soils of the northern taiga zone of the Kola Peninsula are characterized by a large number of microfungi, as evidenced by long-term studies (Evdokimova and Mozgova 2001, Korneikova 2018.…”

Section: The Number Of Microfungi and Bacteriamentioning

confidence: 99%

“…Penicillium spinulosum and sterile mycelium were also found in most of the studied soils, while Acremonium felinum, Aspergillus fumigatus, Berkeleyomyces basicola, Penicillium aurantiogriseum, P. canescens, P. decumbens, P. dierckxii, P. nalgiovense, Trichoderma koningii and Stachybotrys echinatus were isolated from only one sample under study. The genus Penicillium (9 species), whose representatives are typical saprotrophs, was characterized by the greatest species diversity (Domsch et al 2007, Seifert and and are often found in the forest soils of the Kola Peninsula (Evdokimova and Mozgova 2001, Marfenina et al 2002, Korneikova 2018. In urban soils, they also dominated and accounted for 40-70% of the total number of isolated species.…”

Section: Diversity Of Soil Microfungimentioning

confidence: 99%

Soil microorganisms in the urban ecosystems of the russian subarctic (Murmansk region, Apatity)

et al. 2022

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A comprehensive study of the quantitative and qualitative parameters of soil microfungi, bacteria and algae communities in the Apatity city, located in the subarctic zone of Russia, was carried out for the first time. Urban soil samples were taken from various landuse zones (residential, recreational) and compared to arable and forest soils. In the residential zone, a decrease in the number of microfungi in the topsoil horizon to 1.1 thous. CFU/g compared to 22.7 thous. CFU/g in forest soil was revealed. In the residential zone, an increase was found in the number of saprotrophic bacteria to 7.8 million cells g-1 and oligotrophic to 10.9 million cells g-1 compared to 2.6 million cells g-1 and 1.8 million cells g-1 respectively in forest soils. In the recreational zone, the number of soil microorganisms was similar to that in the forest. A decrease in the species diversity of microfungi in the soil of the residential zone and an increase in the diversity of soil algae were revealed. Among the dominant species of fungi in urban soils, atypical species, including pathogenic ones for humans (Penicillium dierckxii, Stachybotris echinatus, Fusarium sp.), were found. In the algal community, diatoms, yellow-green algae, and cyanobacteria appeared in urban soils in comparison with forest soil. As a result of changes in the quantitative and qualitative indicators of soil microbial communities, a decrease in the enzymatic activity of soils has been noted. This may indicate a weakening of the ecosystem functions of urban soils and an increase in the degree of toxicity for living organisms and humans.

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Comparative Analysis of the Number and Structure of the Complexes of Microscopic Fungi in Tundra and Taiga Soils in the North of the Kola Peninsula

Cited by 8 publications

References 4 publications

Qualitative and Quantitative Characteristics of Soil Microbiome of Barents Sea Coast, Kola Peninsula

Qualitative and Quantitative Characteristics of Soil Microbiome of Barents Sea Coast, Kola Peninsula

Urbanization Affects Soil Microbiome Profile Distribution in the Russian Arctic Region

Soil microorganisms in the urban ecosystems of the russian subarctic (Murmansk region, Apatity)

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