Soil microbiome of Plaggic Anthrosol and Calcic Cryosols in Central Yakutia

Abstract

Soil microbiome makes a significant contribution to the implementation of ecosystem services, which are necessary for the sustainable functioning of ecosystems. Soils of central Yakutia develop under dynamic physical and chemical conditions (long-term freezing/thawing processes, redistribution of nutrients), which ensures the formation of a specific microbial community in natural and anthropogenically transformed areas. The object of the study was the natural, fallow, and agricultural soils of central Yakutia. The method of high-throughput sequencing of 16S rRNA gene fragment on Illumina MiSEQ sequencer was used to analyze the microbial community. As a result, in fallow lands a decrease in nutrients was revealed if compared to the lands involved in agricultural turnover. Based on the composition of the microbiome it was observed that the most common phyla are Acidobacteria, Actinobacteria, Verrucomicrobiota, Pseudomonadota (Alphaproteobacteria, Gammaproteobacteria), Bacterioidota, Chloroflexi, Planctomycetota. The presence of a core set of microorganisms for the studied soils was recorded, up to 17.8% of phylotypes are unique and up to 25.7% are common to fallow lands and background plots. Microbial communities vary depending on geographical locations and on types of natural resource use. The most distinct microbial communities are formed in hydromorphic soils with the development of gley processes, as well as in agricultural soils.

Keywords

• 16s amplicons
• soil biodiversity
• high-throughput sequencing
• permafrost affected soils