Microbial Diversity in Cerrado Biome (Neotropical Savanna) Soils

Autor: Maria Regina Silveira Sartori da Silva, Ricardo Henrique Krüger, Alinne Pereira de Castro, Betania Ferraz Quirino, Mercedes M. C. Bustamante
Rok vydání: 2015
Předmět:
0301 basic medicine
Fungal Structure
Biome
Biodiversity
lcsh:Medicine
Plant Science
Forests
Biochemistry
Grassland
Tropical savanna climate
Database and Informatics Methods
Dry season
lcsh:Science
Soil Microbiology
Multidisciplinary
geography.geographical_feature_category
Ecology
Vegetation
Terrestrial Environments
Nucleic acids
Ribosomal RNA
Grasslands
Seasons
Sequence Analysis
Brazil
Research Article
Wet season
Cell biology
Cellular structures and organelles
030106 microbiology
Sequence Databases
Mycology
Biology
Research and Analysis Methods
Ecosystems
03 medical and health sciences
Molecular Biology Techniques
Sequencing Techniques
Non-coding RNA
Relative species abundance
Plant Communities
Molecular Biology
Comunidades biológicas
geography
Cerrados
Bacteria
Plant Ecology
lcsh:R
Ecology and Environmental Sciences
Fungi
Biology and Life Sciences
Archaea
030104 developmental biology
Biological Databases
Earth Sciences
Metagenome
RNA
lcsh:Q
Ribosomes
Zdroj: PLoS ONE
Repositório Institucional da UnB
Universidade de Brasília (UnB)
instacron:UNB
PLoS ONE, Vol 11, Iss 2, p e0148785 (2016)
ISSN: 1932-6203
Popis: The Cerrado, the largest savanna region in South America, is located in central Brazil. Cerrado physiognomies, which range from savanna grasslands to forest formations, combined with the highly weathered, acidic clay Cerrado soils form a unique ecoregion. In this study, high-throughput sequencing of ribosomal RNA genes was combined with shotgun metagenomic analysis to explore the taxonomic composition and potential functions of soil microbial communities in four different vegetation physiognomies during both dry and rainy seasons. Our results showed that changes in bacterial, archaeal, and fungal community structures in cerrado denso, cerrado sensu stricto, campo sujo, and gallery forest soils strongly correlated with seasonal patterns of soil water uptake. The relative abundance of AD3, WPS-2, Planctomycetes, Thermoprotei, and Glomeromycota typically decreased in the rainy season, whereas the relative abundance of Proteobacteria and Ascomycota increased. In addition, analysis of shotgun metagenomic data revealed a significant increase in the relative abundance of genes associated with iron acquisition and metabolism, dormancy, and sporulation during the dry season, and an increase in the relative abundance of genes related to respiration and DNA and protein metabolism during the rainy season. These gene functional categories are associated with adaptation to water stress. Our results further the understanding of how tropical savanna soil microbial communities may be influenced by vegetation covering and temporal variations in soil moisture.
Databáze: OpenAIRE
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