Structural diversity of bacterial communities in two divergent sunflower rhizosphere soils

Autor: Blessing Chidinma Nwachukwu, Ayansina Segun Ayangbenro, Olubukola Oluranti Babalola
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Annals of Microbiology, Vol 73, Iss 1, Pp 1-18 (2023)
Druh dokumentu: article
ISSN: 1869-2044
DOI: 10.1186/s13213-023-01713-y
Popis: Abstract Purpose Farming practices on farmlands aim to improve nutrients in the fields or crops, soil quality and functions, as well as boost and sustain crop yield; however, the effect of loss of ecological diversity and degradation have impacted ecosystem functions. The beneficial rhizosphere-microorganism network and crop rotation may enhance a stable ecosystem. The use of next-generation sequencing technique will help characterize the entire bacterial species in the sunflower rhizosphere compared with the nearby bulk soils. We investigated the potential of the bacterial community structure of sunflower rhizosphere and bulk soils cultivated under different agricultural practices at two geographical locations in the North West Province of South Africa. Methods DNA was extracted from rhizosphere and bulk soils associated with sunflower plants from the crop rotation (rhizosphere soils from Lichtenburg (LTR) and bulk soils from Lichtenburg (LTB) and mono-cropping (rhizosphere soils from Krayburg (KRPR) and bulk soils from Krayburg (KRPB) sites, and sequenced employing 16S amplicon sequencing. Bioinformatics tools were used to analyse the sequenced dataset. Results Proteobacteria and Planctomycetes dominated the rhizosphere, while Firmicutes and Actinobacteria were predominant in bulk soils. Significant differences in bacterial structure at phyla and family levels and predicted functional categories between soils (P
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