NDLI: Distinct bacterial communities across a gradient of vegetation from a preserved Brazilian Cerrado

Content Provider	Springer Nature Link
Author	Araujo, Ademir Sergio Ferreira Bezerra, Walderly Melgaço Santos, Vilma Maria Rocha, Sandra Mara Barbosa Carvalho, Nilza da Silva de Lyra, Maria do Carmo Catanho Pereira Figueiredo, Marcia do Vale Barreto Almeida Lopes, Ângela Celis Melo, Vania Maria Maciel
Copyright Year	2017
Abstract	The Cerrado biome in the Sete Cidades National Park, an Ecological Reserve in Northeastern Brazil, has conserved its native biodiversity and presents a variety of plants found in other savannas in Brazil. Despite this finding the soil microbial diversity and community structure are poorly understood. Therefore, we described soil bacterial diversity and distribution along a savanna vegetation gradient taking into account the prevailing environmental factors. The bacterial composition was retrieved by sequencing a fragment of the 16S ribosomal RNA gene. The bacterial operational taxonomic units (OTUs) were assigned to 37 different phyla, 96 classes, and 83 genera. At the phylum level, a core comprised by Proteobacteria, Acidobacteria, Actinobacteria, Firmicutes, Verrucomicrobia and Planctomycetes, was detected in all areas of Cerrado. ‘Cerrado stricto sensu’ and ‘Cerradao’ share more similarities between edaphic properties and vegetation and also present more similar bacterial communities, while ‘Floresta decidual’ and ‘Campo graminoide’ show the largest environmental differences and also more distinct bacterial communities. Proteobacteria (26%), Acidobacteria (21%) and Actinobacteria (21%) were the most abundant phyla within the four areas. All the samples present similar bacteria richness (alpha diversity) and the observed differences among them (beta diversity) were more related to the abundance of specific taxon OTUs compared to their presence or absence. Total organic C, N and P are the main abiotic factors structuring the bacterial communities. In summary, our findings show the bacterial community structure was clearly different across the Cerrado gradient, but that these environments share a bacterial phylum-core comprising Proteobacteria, Acidobacteria, Actinobacteria, Verrucomicrobia and Planctomycetes with other Brazilian savannas.
Starting Page	457
Ending Page	469
Page Count	13
File Format	PDF
ISSN	00036072
Journal	Antonie van Leeuwenhoek
Volume Number	110
Issue Number	4
e-ISSN	15729699
Language	English
Publisher	Springer International Publishing
Publisher Date	2017-01-06
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	16S rRNA gene-based metagenomic Brazilian savanna Soil bacterial diversity Microbiology Medical Microbiology Plant Sciences Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Microbiology

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