The soil microbiomes of the Brazilian Cerrado

Procópio, Luciano; Barreto, Cristine Chaves

doi:10.1007/s11368-021-02936-9

Cited by 22 publications

(8 citation statements)

References 176 publications

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“…In terms of bacterial community composition, Proteobacteria was the most predominant phylum in all samples. The same was observed in other metagenomic studies on soil microbiomes from the Cerrado [ 51 , 52 , 53 , 54 ] and the Atlantic Forest [ 61 ]. In this study, as mentioned above, the phyla Proteobacteria, Actinobacteria, and Firmicutes were observed in all samples.…”

Section: Discussionsupporting

confidence: 84%

“…In studies carried out in similar environments, a predominance of the phyla represented by Proteobacteria, Actinobacteria, and Firmicutes has been observed, with approximately 80% of the total number of representatives representing the relative abundance of these three phyla [ 50 , 51 ]. Different studies have shown the occurrence of these same phyla in the Brazilian Cerrado [ 52 , 53 , 54 ].…”

Section: Discussionmentioning

confidence: 99%

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New Insights into the Effect of Fipronil on the Soil Bacterial Community

et al. 2022

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Fipronil is a broad-spectrum insecticide with remarkable efficacy that is widely used to control insect pests around the world. However, its extensive use has led to increasing soil and water contamination. This fact is of concern and makes it necessary to evaluate the risk of undesirable effects on non-target microorganisms, such as the microbial community in water and/or soil. Studies using the metagenomic approach to assess the effects of fipronil on soil microbial communities are scarce. In this context, the present study was conducted to identify microorganisms that can biodegrade fipronil and that could be of great environmental interest. For this purpose, the targeted metabarcoding approach was performed in soil microcosms under two environmental conditions: fipronil exposure and control (without fipronil). After a 35-day soil microcosm period, the 16S ribosomal RNA (rRNA) gene of all samples was sequenced using the ion torrent personal genome machine (PGM) platform. Our study showed the presence of Proteobacteria, Actinobacteria, and Firmicutes in all of the samples; however, the presence of fipronil in the soil samples resulted in a significant increase in the concentration of bacteria from these phyla. The statistical results indicate that some bacterial genera benefited from soil exposure to fipronil, as in the case of bacteria from the genus Thalassobacillus, while others were affected, as in the case of bacteria from the genus Streptomyces. Overall, the results of this study provide a potential contribution of fipronil-degrading bacteria.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

New Insights into the Effect of Fipronil on the Soil Bacterial Community

et al. 2022

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“…These metagenomic sequencing analyses generate large amounts of data that require further analysis to obtain significant results [ 42 ]. Such analysis can elucidate the presence of functional redundancy or overlapping genomic characteristics in most PGPR, allowing the discovery of new genera and species [ 43 ].…”

Section: Plant Microbiomes and Prospection Of Diazotrophic Bacteriamentioning

confidence: 99%

The Impact of Non-Nodulating Diazotrophic Bacteria in Agriculture: Understanding the Molecular Mechanisms That Benefit Crops

Thiebaut

Urquiaga

Rosman

et al. 2022

IJMS

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Agriculture is facing increasing challenges with regard to achieving sustainable growth in productivity without negatively impacting the environment. The use of bioinoculants is emerging as a sustainable solution for agriculture, especially bioinoculants based on diazotrophic bacteria. Brazil is at the forefront of studies intended to identify beneficial diazotrophic bacteria, as well as in the molecular characterization of this association on both the bacterial and plant sides. Here we highlight the main advances in molecular studies to understand the benefits brought to plants by diazotrophic bacteria. Different molecular pathways in plants are regulated both genetically and epigenetically, providing better plant performance. Among them, we discuss the involvement of genes related to nitrogen metabolism, cell wall formation, antioxidant metabolism, and regulation of phytohormones that can coordinate plant responses to environmental factors. Another important aspect in this regard is how the plant recognizes the microorganism as beneficial. A better understanding of plant–bacteria–environment interactions can assist in the future formulation of more efficient bioinoculants, which could in turn contribute to more sustainable agriculture practices.

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“…Os solos do Cerrado são normalmente ácidos e pobres em nutrientes, com altos níveis de alumínio e baixo teor de cátions trocáveis, como Ca, Mg, K. O solo predominante é o latossolo e o regime de precipitação anual consiste em um período de relativa elevação (1500 mm) e uma estação seca de 4 meses de junho a setembro. A sazonalidade das chuvas contribui para um elevado intemperismo do solo, com baixa disponibilidade de nutrientes (PROCÓPIO; BARRETO, 2021).…”

Section: Introductionunclassified

Indicadores de qualidade do solo em sistemas agroecológicos no Cerrado Mineiro

Rocha¹

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Agradeço aos meus pais pelo incentivo nesta jornada. Ao meu namorado pelo companheirismo, paciência e incentivo.A todas as pessoas que me ajudaram no Laboratório de Genética, Bioquímica e Biotecnologia (LAGEB), Amanda, Danielle e Jéssyca. Também agradeço aos Técnicos de Laboratório que me ajudaram com os experimentos desse trabalho, em especial à Lorraine e Túlio.Agradeço a minha orientadora, Profa. Dra. Ana Carolina Silva Siquieroli, com o meu muito obrigada pela paciência, atenção, apoio e incentivo durante todo o programa de mestrado. E também às pessoas que me auxiliaram nessa pesquisa:

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The soil microbiomes of the Brazilian Cerrado

Cited by 22 publications

References 176 publications

New Insights into the Effect of Fipronil on the Soil Bacterial Community

New Insights into the Effect of Fipronil on the Soil Bacterial Community

The Impact of Non-Nodulating Diazotrophic Bacteria in Agriculture: Understanding the Molecular Mechanisms That Benefit Crops

Indicadores de qualidade do solo em sistemas agroecológicos no Cerrado Mineiro

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