SOIL PROKARYOTES – AN IMPORTANT COMPONENT OF SOIL AND A SENSITIVE INDEX OF ITS HEALTH
Nina FRUNZE, Universitatea Tehnică a Moldovei
Abstract
It was established that the spectrum of prokaryotic communities of the studied chernozem is formed by 15 phyla:
Pseudomonadota, Actinomycetota, Nitrosophaerota, Bacteroidota, Bacillota, Acidobacteriota, Verrucomicrobiota,
Myxococcota and Cyanobacteria, Gemmatimonadota, Nitrospirota Patescibacteria, Planctomycetota, Chloroflexota
and Fibrobacterota, 14 of which are representatives of the Bacteria domain (91.85-88.37%) and one, Nitrosophaerota – representative of the Archaea domain (8.15-11.63%). Little-studied, but potentially present in soil since the
beginning of time, representatives of the Archaea domain were identified in all experimental variants. Only the phyla
Gemmatimonadota, Nitrospirota, Patescibacteria, Planctomycetota, Chloroflexota and Fibrobacterota had a share
<1% and constituted the rarely encountered prokaryotes.
Edaphic prokaryotes, having a significant share in the structure of the living substance in soils, in its interaction
with the non-living parts in the competition for nutrients, determine the formation of differentiated microbial communities and thus represent not only an important component of the soil and a main factor in its formation, but also a
sensitive index of its health.
Keywords: prokaryotes, archaea, bacteria, typical chernozem, forage rotations, soil health.
