Population number, viability, and taxonomic composition of the bacterial nanoforms in iron-manganic concretions

Лысак, Л. В.; Kadulin, M. S.; Konova, I. A.; Lapygina, E. V.; Ivanov, A. V.; Zvyagintsev, D. G.

doi:10.1134/s1064229313060069

Cited by 8 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nutrient cycling by ultra-small-sized organisms is not restricted to aquatic environments. A number of studies have shown an active population of ultramicrobacteria within a wide range of soil types ( Soina et al, 2012 ; Lysak et al, 2013 ; Dobrovol’skaya et al, 2015 ). It was previously thought that soil pores < 1 μm would be inaccessible to cells, leading to physical protection of organic carbon in soil.…”

Section: Functional Role Of Small-sized Organismsmentioning

confidence: 99%

Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function

et al. 2018

View full text Add to dashboard Cite

Nano-sized and filterable microorganisms are thought to represent the smallest living organisms on earth and are characterized by their small size (50–400 nm) and their ability to physically pass through <0.45 μm pore size filters. They appear to be ubiquitous in the biosphere and are present at high abundance across a diverse range of habitats including oceans, rivers, soils, and subterranean bedrock. Small-sized organisms are detected by culture-independent and culture-dependent approaches, with most remaining uncultured and uncharacterized at both metabolic and taxonomic levels. Consequently, their significance in ecological roles remain largely unknown. Successful isolation, however, has been achieved for some species (e.g., Nanoarchaeum equitans and “Candidatus Pelagibacter ubique”). In many instances, small-sized organisms exhibit a significant genome reduction and loss of essential metabolic pathways required for a free-living lifestyle, making their survival reliant on other microbial community members. In these cases, the nano-sized prokaryotes can only be co-cultured with their ‘hosts.’ This paper analyses the recent data on small-sized microorganisms in the context of their taxonomic diversity and potential functions in the environment.

show abstract

Section: Functional Role Of Small-sized Organismsmentioning

confidence: 99%

Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In addition, accumulations of iron compounds of a focal nature were revealed, due to the vital activity of colonies of iron-reducing microorganisms (Fig. 3 D) [29].…”

Section: «агроэкоинфо» =================================================mentioning

confidence: 98%

Ecological and geochemical assessment of the content of chemical elements and features of their spatial distribution in Fe nodules of soils in the Middle Cis-Urals

Gorokhova¹,

Васильев²

2022

АЭИ

View full text Add to dashboard Cite

This work is about the ecological and geochemical assessment of the elemental chemical composition of soil nodules in the taiga zone of the Middle Cis-Urals. The features of the spatial distribution of chemical elements in concretions of Umbric Albeluvisols Abruptic, Luvic Stagnosols Dystric, and Haplic Fluvisols Oxyaquic are characterized for the first time using atomic absorption spectrometry and scanning electron microscopy with energy-dispersive analysis. A concentric ring structure of nodules with alternating zones rich in Fe and Mn has been revealed. Nodules act as geochemical barriers and accumulate not only iron and manganese, but also Cu, Ni, Co, Zn, and Pb. Keywords: ALBELUVISOLS, STAGNOSOLS, FLUVISOLS, ORTSHTEIN, RORENSTEIN, GEOCHEMISTRY CONSTANTS, ATOMIC ABSORPTION SPECTROMETRY, SEM/EDS, FE AND MN DISTRIBUTION, RING MICROSTRUCTURE

show abstract

Filtered forms of prokaryotes and bacteriophages in soil concretions

Лысак

Konova

Lapygina

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

In Albic Retisols, Stagnic Fluvisols and Gleyic Fluvisols processes of ferriferous and manganese transformation follows rather active, that create new ecological niches for soil microorganisms.The study of concretions in the Albic Retisols, Stagnic Fluvisols and Gleyic Fluvisols showed, that the most characteristic feature of the prokaryotic community was the higher number and diversity of recoverable bacteria in comparison with the same indexes in the host horizons. The representatives of phylum Proteobacteria (class Gammaproteobacteria and Deltaproteobacteria) were dominant in the microbial communities in studied concretions. For the first time, the bacteriophages were found in concretions among them tailed phages were dominant. The method of the high-throughput sequencing of the 16S rRNA gene allowed to reveal the variability of the prokaryotic community in concretions of the Albic Retisol (Cutanic, Siltic), which was characterized predominantly by 7 bacterial phyla and 2 archaea phyla Both groups of organisms typical of soils and prokaryotes capable of transformation of iron and manganese under aerobic and anaerobic conditions were revealed in soil concretions. The specific characteristic of the studied soil concretions was a widespread occurrence of filtered bacterial forms, which may be considered as specific survival forms in soil loci.

show abstract

Population number, viability, and taxonomic composition of the bacterial nanoforms in iron-manganic concretions

Cited by 8 publications

References 13 publications

Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function

Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function

Ecological and geochemical assessment of the content of chemical elements and features of their spatial distribution in Fe nodules of soils in the Middle Cis-Urals

Filtered forms of prokaryotes and bacteriophages in soil concretions

Contact Info

Product

Resources

About