Composição e distribuição de comunidades microbianas sob diferentes tipos de manejo no cerrado brasileiro

Abstract

The Brazilian Cerrado is considered the most richest and diverse savana in the world and was rated as one of the major "hotspots" of biodiversity. It is representative biome in central Brazil and the second largest biome in South America biodiversity and is considered an important wildlife corridor. However, large areas of native vegetation have been converted into agricultural areas, whether for grain production, livestock or forestry characterizing a loss of approximately 40% of the vegetation of this biome. In this context, understanding how land use affects microbial communities is essential for the sustainable management of agricultural ecosystems, since microorganisms are the main agents that regulate the cycling of nutrients in the soil, directly affecting plant productivity and stability of ecosystems. The objective of this study was to know the composition and how to distribute the bacterial communities of the soil in Brazilian Cerrado associated with different land use systems using pyrosequencing of 16S rRNA. We observed the composition and structure of bacterial communities in soils under different land use systems, which allowed identifying phyla as their abundance and distribution of communities, suggesting that soil management is an important factor in the structure of microbial communities.