Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Functional Diversity of Microbial Communities in the Soybean (Glycine max L.) Rhizosphere from Free State, South Africa

Version 1 : Received: 6 July 2022 / Approved: 7 July 2022 / Online: 7 July 2022 (06:05:13 CEST)

A peer-reviewed article of this Preprint also exists.

Ajiboye, T.T.; Ayangbenro, A.S.; Babalola, O.O. Functional Diversity of Microbial Communities in the Soybean (Glycine max L.) Rhizosphere from Free State, South Africa. Int. J. Mol. Sci. 2022, 23, 9422. Ajiboye, T.T.; Ayangbenro, A.S.; Babalola, O.O. Functional Diversity of Microbial Communities in the Soybean (Glycine max L.) Rhizosphere from Free State, South Africa. Int. J. Mol. Sci. 2022, 23, 9422.

Abstract

The plant microbiome is involved in enhancing nutrient acquisition, plant growth, stress tolerance and reduces chemical inputs. The identification of microbial functional diversity offers the chance to comprehend and engineer them for various agricultural processes. Using a shotgun metagenomics technique, this study examined the functional diversity and metabolic potentials of microbial communities in the rhizosphere soybean. 18 genera were selected out of which six are prominent in sample AB, the prominent genera are Geobacter, Nitrobacter, Burkholderia, Candidatus, Bradyrhizobium and Streptomyces. Twenty-one functional categories were present with 14 of the functions being dominant. The dominant functions include carbohydrates, fatty acids, lipids and isoprenoids, amino acids and derivatives, sulfur metabolism, and nitrogen metabolism. Kruskal- Wallis test was used to test samples’ diversity differences. There was a significant difference in the diversity with p-value of 0.04. ANOSIM was used to analyse the similarities of the samples, p-values and R-values of the samples were 0.01 and 0.5835 respectively. Phosphorus with p-value of0.718 and 64.3% contribution was more prominent among the soil properties that have influence on functional diversity of the samples. Given the functional groups reported in this study, it is clear that soil characteristics had an impact on on the functions role of the rhizospheric microbiome of soybean

Keywords

microbial communities; plant-microbe interractions; rhizodeposition; SEED subsystem; shotgun metagenomics

Subject

Biology and Life Sciences, Immunology and Microbiology

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