SciELO - Scientific Electronic Library Online

vol.114 número5-6Synthesis of zeolite-P from coal fly ash derivative and its utilisation in mine-water remediationCompetence of Science Foundation students in some simple strategies for problem solving índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados



Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google


South African Journal of Science

versión On-line ISSN 1996-7489
versión impresa ISSN 0038-2353


NKUEKAM, Gilbert Kamgan; COWAN, Don A.  y  VALVERDE, Angel. Arable agriculture changes soil microbial communities in the South African Grassland Biome. S. Afr. j. sci. [online]. 2018, vol.114, n.5-6, pp.1-7. ISSN 1996-7489.

Many studies, mostly in temperate regions of the northern hemisphere, have demonstrated that agricultural practices affect the composition and diversity of soil microbial communities. However, very little is known about the impact of agriculture on the microbial communities in other regions of the world, most particularly on the African continent. In this study, we used MiSeq amplicon sequencing of bacterial 16S rRNA genes and fungal ITS regions to characterise microbial communities in agricultural and natural grassland soils located in the Mpumalanga Province of South Africa. Nine soil chemical parameters were also measured to evaluate the effects of edaphic factors on microbial community diversity. Bacterial and fungal communities were significantly richer and more diverse in natural grassland than in agricultural soils. Microbial taxonomic composition was also significantly different between the two habitat types. The phylum Acidobacteria was significantly more abundant in natural grassland than in agricultural soils, while Actinobacteria and the family Nectriaceae showed the opposite pattern. Soil pH and phosphorus significantly influenced bacterial communities, whereas phosphorus and calcium influenced fungal communities. These findings may be interpreted as a negative impact of land-use change on soil microbial diversity and composition. SIGNIFICANCE: • This report is the first of the effect of land-use changes on the diversity of the soil microbial communities in African grassland soils. • Land-use changes influence the diversity and structure of soil microbial communities in the Grassland Biome of South Africa. • This study serves as a baseline for future studies on South African soil microbial diversity.

Palabras clave : land use; grassland; agriculture; microbial diversity; next-generation sequencing.

        · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons