Molecular phylogenetic diversity of bacteria associated with soil of the savanna-like Cerrado vegetation

Quirino, Betânia Ferraz; Παππάς, Γεώργιος; Tagliaferro, Andrea C.; Collevatti, Rosane G.; Leonardecz, Eduardo; Silva, Maria Regina S.S. da; Bustamante, Mercedes M. C.; Krüger, Ricardo Henrique

doi:10.1016/j.micres.2006.12.001

Cited by 59 publications

(41 citation statements)

References 45 publications

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“…These genera are found naturally in soil, water, and plants (Quirino et al, 2009). Leuconostoc and Lactobacillus genera are not commonly found in soil, however it was found in this study.…”

Section: Discussioncontrasting

confidence: 55%

Microbial community structure and chemical composition from dark earth in a native archaeological site of the lower Amazon

Maxwel¹,

Karina²,

Santos³

et al. 2016

Afr. J. Microbiol. Res.

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The microbial community structure from dark earth in a native archaeological site of the Lower Amazon was analyzed by PCR-DGGE, using 16S rRNA gene for prokaryote population and 18S rDNA and ITS regions (using clamp GC) for the eukaryote population. The bands were excised from gel and reamplified for sequencing. The diversity found according to the region of amplification showed same profiles for the two primers pairs. The bacteria genus were: Bacillus, Klebsiella, Pantoea, Enterobacter, Lactobacillus, Escherichia, Leuconostoc and actinobacterias as Streptomyces and Microbacterium. Among the fungal community was Zygosaccharomyces, Lachancea, Saccharomyces, Cladosporium, Candida, Penicillium and Uncultured ascomycota and zygomycete were found. Molecular approaches revealed microbial groups that have never been reported in Lower Amazon soil as the Leuconostoc mesenteroides, Lactobacillus casei and Lactobacillus paracasei bacteria's and Lachancea meyersii yeast. The soil pH was ~6.5; the soil had high levels of minerals with exception of Na (not detected) and Al (~0.2 mg/dm 3 ). The organic matter was 3.5 dag/kg. This study also shows that the Amazon soil is rich in minerals. This can be an important factor in the species richness in the Amazon region. The present data show that the Lower Amazon represents a vast resource for the biotechnology area.

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“…These genera are found naturally in soil, water, and plants (Quirino et al, 2009). Leuconostoc and Lactobacillus genera are not commonly found in soil, however it was found in this study.…”

Section: Discussioncontrasting

confidence: 55%

Microbial community structure and chemical composition from dark earth in a native archaeological site of the lower Amazon

Maxwel¹,

Karina²,

Santos³

et al. 2016

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

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“…This is true for tropical regions in general, as few studies have focused on belowground biodiversity (Swift et al, 1998), especially when compared to the attention aboveground diversity has received. Some surveys in the Amazon and other tropical environments report the composition of soil bacterial communities and the effect of land use and forest recovery on their phylogenetic and functional diversity (Borneman and Triplett, 1997;Yin et al, 2000;da Silveira et al, 2006;Pereira et al, 2006;Quirino et al, 2009), but factors possibly causing these changes remain to be determined.…”

Section: Introductionmentioning

confidence: 99%

Changes in land use alter the structure of bacterial communities in Western Amazon soils

et al. 2009

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Here we show how agricultural practices by indigenous peoples as well as forest recovery relate to the structure and composition of Amazon soil bacterial communities. Soil samples were collected in different land use systems and bacterial community composition and diversity were explored by T-RFLP, cloning and sequencing, and data were analyzed with multivariate techniques. The main differences in bacterial community structure were related to changes in the soil attributes that, in turn, were correlated to land use. Community structure changed significantly along gradients of base saturation, [Al 3 þ ] and pH. The relationship with soil attributes accounted for about 31% of the variation of the studied communities. Clear differences were observed in community composition as shown by the differential distribution of Proteobacteria, Bacteroidetes, Firmicutes, Acidobacteria and Actinobacteria. Similarity between primary and secondary forest communities indicates the recovery of bacterial community structure during succession. Pasture and crop soil communities were among the most diverse, showing that these land use types did not deplete bacterial diversity under the conditions found in our sites.

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“…The recovery of degraded pastures has implications for C sequestration as well as for the conservation of native Cerrado areas considering the large area of pastures in the Cerrado region currently showing traits of degradation (Peron and Evangelista, 2004). Change in land use (pasture compared with native areas) affected also the density and abundance of soil microorganisms (Viana, 2002) with pasture areas presenting lower diversity (Quirino et al, 2009).…”

Section: Impacts Of Disturbances and Management On Carbon Stocks And mentioning

confidence: 99%

Potential impacts of climate change on biogeochemical functioning of Cerrado ecosystems

et al. 2012

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The Cerrado Domain comprises one of the most diverse savannas in the world and is undergoing a rapid loss of habitats due to changes in fire regimes and intense conversion of native areas to agriculture. We reviewed data on the biogeochemical functioning of Cerrado ecosystems and evaluated the potential impacts of regional climate changes. Variation in temperature extremes and in total amount of rainfall and altitude throughout the Cerrado determines marked differences in the composition of species. Cerrado ecosystems are controlled by interactions between water and nutrient availability. In general, nutrient cycles (N, P and base cations) are very conservative, while litter, microbial and plant biomass are important stocks. In terms of C cycling, root systems and especially the soil organic matter are the most important stocks. Typical cerrado ecosystems function as C sinks on an annual basis, although they work as source of C to the atmosphere close to the end of the dry season. Fire is an important factor altering stocks and fluxes of C and nutrients. Predicted changes in temperature, amount and distribution of precipitation vary according to Cerrado sub-regions with more marked changes in the northeastern part of the domain. Higher temperatures, decreases in rainfall with increase in length of the dry season could shift net ecosystem exchanges from C sink to source of C and might intensify burning, reducing nutrient stocks. Interactions between the heterogeneity in the composition and abundance of biological communities throughout the Cerrado Domain and current and future changes in land use make it difficult to project the impacts of future climate scenarios at different temporal and spatial scales and new modeling approaches are needed.Keywords: Savanna, nutrient cycling, fire, land use, climate change, carbon. Os impactos potenciais das mudanças climáticas no funcionamento biogeoquímico dos ecossistemas de cerradoResumo O Domínio Cerrado é composto por uma das savanas mais diversas do mundo e está passando por uma rápida perda de habitats devido às mudanças nos regimes de fogo e intensa conversão de áreas nativas para a agricultura. Os dados sobre o funcionamento biogeoquímico do Cerrado foram revisados, avaliando-se os potenciais impactos das mudanças climáticas regionais. As variações na temperatura, na precipitação e altitude ao longo do Cerrado determinam diferenças marcantes na composição das espécies. Os ecossistemas de Cerrado são controlados por interações entre a água e a disponibilidade de nutrientes. Em geral, a ciclagem de nutrientes (N, P e cátions) são muito conservadores, enquanto a serapilheira, a biomassa microbiana e vegetal são importantes compartimentos de estoque. Em termos de ciclagem de C, o sistema radicular e, especialmente, a matéria orgânica do solo são os estoques mais importantes. Em bases anuais, o ecossistema de cerrado típico funciona como sumidouros de C embora o opere como fonte de C para a atmosfera ao final da estação seca. O fogo é um fator importante alterando...

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Molecular phylogenetic diversity of bacteria associated with soil of the savanna-like Cerrado vegetation

Cited by 59 publications

References 45 publications

Microbial community structure and chemical composition from dark earth in a native archaeological site of the lower Amazon

Microbial community structure and chemical composition from dark earth in a native archaeological site of the lower Amazon

Changes in land use alter the structure of bacterial communities in Western Amazon soils

Potential impacts of climate change on biogeochemical functioning of Cerrado ecosystems

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