Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 1
Written by Sorin MATEI, Gabi Mirela MATEI, Sorina DUMITRU, Victoria MOCANU, Monica DUMITRAȘCU
The soil microbial community plays a crucial role in the carbon (C) cycle, acting as a primary driver of variability in the soil’s carbon storage potential. The taxonomic composition, through its structure and level of activities, ensures the regulation of nutrient delivery and the rate of decomposition of organic matter. The paper presents the results of the research carried out to assess the role of soil inoculation with synthetic microbiomes (M1, M4, M5, M7) containing performing heterotrophs, in priming the processes responsible for carbon sequestration. Specifically, the study evaluated the influence of these microbiomes on soil glycoprotein level, exopolysaccharide (EPS) production, dissolved organic carbon (DOC) and microbial biomass content. Significant differences were observed among experimental variants, particularly in microbial biomass accumulation. Among the tested microbiomes, M5 demonstrated superior performance, inducing the highest increases in glycoprotein content (1.73 mg·g-1), EPS (594 µg·mL-1), microbial biomass (363.2 mg C·kg-1), and the lowest DOC content (10.13 mg·L-1). These results indicate M5’s enhanced integrative capacity and compatibility with soil conditions, supporting its potential role in improving carbon stability and sequestration.
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