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Registros recuperados: 15
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Actinobacteria from brazilian cerrado soil: potential biocontrol agent to soybean and wheat diseases. Repositório Alice
HOYOS, H. A. V.; CASTELIANI, A. G. B.; MORAIS, J. F. A.; CHIARAMONTE, J. B.; MELO, I. S. de.
Abstract: The Cerrado biome, located in the Middle West region of Brazil, has showed a significant increase in soybean (Glycine maxx L. Merrill) and wheat (Triticuma estivum L.) production. In these crops the fungi Sclerotinia sclerotiorum and Magnaphorte grisea constitute severe phytosanitary problems, once they commonly inhabit the soil favored by their latency structures. These fungi are responsible for great economic losses during the entirely crop production cycle. The soil is considered a complex habitat due to the extensive variety of physical, chemical and microbiological processes, and is essential for different forms of life, once this ecosystem offers great support to the maintenance of microbiological diversity. Actinobacteria, one of the main...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Magnaphorte grisea; Biological control; Sclerotinia sclerotiorum; Actinobacteria.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037837
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Back to the roots: revealing beneficial interactions between the rhizosphere microbiome and wild wheat. Repositório Alice
ROSSMANN, M.; PÉREZ-JARAMILLO, J. E.; CHIARAMONTE, J. B.; KAVAMURA, V. N.; DUMACK, K.; FIORE-DONNO, A. M.; MENDES, L. W.; BONKOWSKI, M.; MAUCHLINE, T.; RAAIJMAKERS, J. M.; MENDES, R..
Domestication of plants may have impacted the interactions between plants and their rhizosphere microbiome. Considering that plants rely on the rhizosphere microbiome for functions related with plant growth, nutrition and health, the objective of this work was to analyse the rhizosphere microbiome of wild relatives and modern varieties of wheat and to investigate whether wild relatives recruit a higher proportion of beneficial microbes than modern cultivars. By 16S-rRNA gene amplicon, ITS and 18SrRNA gene amplicon, we assessed the bacterial, fungal and cercozoa rhizosphere community composition of five modern cultivars and three wheat ancestors cultivated in forest and agricultural soils. Results revealed a pronounced soil type and rhizosphere effect on...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Wild wheat; Trigo; Rizosfera; Rhizosphere; Wheat; Microbiome.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103217
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Bioprospecting of culturable actinobacteria from soil and rhizosphere as potential inhibitors of Sclerotinia sclerotiorum. Repositório Alice
VARGAS-HOYOS, H. A.; CHIARAMONTE, J. B.; SANTOS, S. N.; QUEIROZ, S. C. do N. de; MELO, I. S. de.
White mold, caused by S. sclerotiorum, is one important disease of soybean crops (Glicyne Max. (L)Merrill.) with considerable yield losses. Absence of effective control and resistance of the fungus to commercial fungicides make this phytopathogen a serious problem in tropical regions. Streptomyces species turn out to be potential candidates for agricultural applications due to their biotechnological features. The goal of this research was bioprospecting Streptomyces sp. for biocontrol of white mold. In order to evaluate the antifungal activity, six pre-selected isolates: S. rishiriensis (3AS4), S. albolungus (3BS4), S. champavatti (CanV2 39), S. violascens (CanV2 06f) and S. covourensis (1AS2a, 1AS2c) were used. They were grown for 2 weeks at 28 ºC at 135...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Actinobacteria; Controle biológico; Biocontrol.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1071846
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Composition and functionality of the wild and cultivated common bean rhizosphere microbiome. Repositório Alice
FLORES, S. W. S.; CHIARAMONTE, J. B.; ROSSMANN, M.; MENDES, R..
Abstract: Plants rely on their rhizosphere microbiome for specific functions, such as, nutrient acquisition and protection against diseases. The domestication and subsequent plant breeding neglected the important role of the rhizosphere microbiome on plant performance. Here, we tested the hypothesis that ancestor materials have higher ability to host beneficial microorganisms in the rhizosphere when compared to modern cultivars. For this, we assessed the composition and functionality of the rhizosphere microbiome associated with a wild (Wild Mex) and with a cultivated (IAC Alvorada) common bean grown in highly biodiverse soil (Amazonian Dark Earth). Antagonistic bacteria were isolated from common bean rhizosphere and total rhizosphere DNA was extracted for...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Wild common bean; Metagenome; Rhizobacteria; Metagenomics; Microbial communities.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1036667
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Effect of phosphorus limitation on the microbial community assembly in the common bean (Phaseolus vulgaris L.) rhizosphere. Repositório Alice
CHIARAMONTE, J. B.; ROSSMANN, M.; MENDES, R..
Abstract: The indiscriminate use of inputs in agricultural systems, particularly phosphate, combined with the need of growing food production, is causing the depletion of phosphorus mines around the world. In order to mitigate the environmental impact caused by phosphorus exploration microorganisms can be used to increase the efficiency of phosphorus utilization in crop systems by promoting nutrient solubilization and absorption. It is believed that low phosphorus concentration in soil, enriches specific members of the rhizosphere microbiome related to the availability of this element to the plant. In this study, a factorial experiment was performed considering contrasting cultivars in the uptake efficiency of phosphorus (being IAC-Imperador and DOR-364,...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: P uptake; Rhizosphere microbiome; Plant-microbe interactions; Mycorrhizal fungi; Phaseolus vulgaris; Phosphate solubilizing bacteria.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1036664
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Impacto da domesticação do trigo em sua interação com bactérias benéficas da rizosfera. Repositório Alice
CARVALHO, J. C. de; COSTA, L. S. A. S.; CHIARAMONTE, J. B.; ROSSMANN, M.; MENDES, R..
Resumo: O processo de domesticação do trigo, como outras espécies cultivadas, está relacionado à formação de civilizações sedentárias. A domesticação consiste na seleção de caracteres fenotípicos úteis para uso humano. A transição do ambiente natural para sistemas de produção modernos geram diversas mudanças no ambiente que podem acarretar em impactos na microbiota do solo cultivado. As plantas vivem em associação com microrganismos que auxiliam em funções como defesa, saúde e crescimento da planta, e esta associação deve-se a um longo processo de coevolução. Assumindo que existe a dependência dessa microbiota, acredita-se que cultivares modernos perderam algumas características para recrutar microrganismos específicos do hospedeiro durante o processo de...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Domesticação de plantas; Microbioma da rizosfera; Interação planta-microbioma; Trigo; Rizosfera; Microbiome; Domestication; Wheat; Soil-plant interactions.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1105014
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Quantification of bacteria and archaea in rhizosphere of wild and modern common bean. Repositório Alice
CHIARAMONTE, J. B.; FLORES, S. W. S.; ROMAGNOLI, E. M.; ROSSMAN, M.; MENDES, R..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Bacteria; Archaea; Bean.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1010910
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Quantification of the mycorrhizal fungal community associated with a modern wheat cultivar (Triticum aestivum) and with a wheat ancestor. Repositório Alice
ROSSMANN, M.; CHIARAMONTE, J. B.; MENDES, R..
Abstract: Plant breeding is an important instrument to improve crop productivity. However, studies have shown that plant breeding, as well as the use of management practices such as tillage and fertilization, influence the plant root microbiome and also may have caused reduction in the genetic diversity of modern cultivars when compared to their ancestors. As the rhizosphere microbiome can profoundly impact plant growth, nutrition and health, we hypothesized that plant breeding can negatively affect the recruitment of beneficial microbes in the rhizosphere and interactions with their favorable microbial partners. A greenhouse experiment was conducted to assess the composition of the rhizosphere mycorrhizal fungi community in wheat (Triticum aestivum)...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Crop breeding; Rhizosphere microbiome; Plant-microbe interactions; Mycorrhizal community; Trigo; Triticum aestivum.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1036666
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Rhizosphere bacterial communities as a strategy in wheat protection against root rot caused by Bipolaris sorokiniana. Repositório Alice
FARIA, M. R. de; COSTA, L. S. A. S.; CHIARAMONTE, J. B.; ROSSMANN, M.; BETTIOL, W.; MENDES, R..
The sustainable agriculture requires the use of advanced and modern technologies with the capacity to increase productivity to feed a world growing population demand. In this context, plant breeding associated with the studies of the rhizosphere microbiome may be an innovative strategy in plant protection against soil-borne pathogens. However, few studies investigate the structure and biodiversity of microbial communities in ancestral genotypes and recent cultivars associated with the plant defense process. Thereby, considering the impact of domestication and plant breeding on interactions in the plant rhizosphere microbiome, in this study, we compared the tolerance level of ancestral and recent wheat genotypes to Bipolaris sorokiniana and its correlation...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Plant domestication; Plant microbe interaction; Plant protection; Rizosfera; Trigo.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103523
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Rhizosphere bacterial community composition in wild and modern common bean. Repositório Alice
FLORES, S. W. S.; MENDES, L. W.; CHIARAMONTE, J. B.; MENDES, R..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Bactéria; Rhizosphere; Bacterial communities.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1010909
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Salinity gradient as a selective pressure in bacteria diversity from Laguncularia racemosa phylloplane. Repositório Alice
MOITINHO, M. A.; CHIARAMONTE, J. B.; SOLANO, J. H.; BONONI, L.; MELO, I. S. de; TAKETANI, R. G..
Mangroves are dynamic and unique ecosystems which provide important ecological services to coastal areas. The phylloplane is one of the greatest microbial hosts and most of their microorganisms are uncultivated, thus having the potential to house novel bacteria species. Bacterial community structure of L. racemosa phylloplane, a well-adapted mangrove species with salt exudation at foliar levels, was accessed through 16S rRNA amplicon sequencing. Sampling was performed at Cananéia mangrove in São Paulo state, Brazil in three different sites across a transect from the upland to the seashore. There was significant effect of the sites in the bacterial microbial community along the transect. Higher diversity was observed in intermediary locations between the...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Laguncularia racemosa phylloplane; Bactéria; Salinidade.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103526
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Solubilization of phosphorus and plant growth promotion by actinobacteria in soybean crop. Repositório Alice
VARGAS-HOYOS, H. A.; CHIARAMONTE, J. B.; MELO, I. S. de.
Several studies have already investigated the Actinobacteria as source of raw material for drug discovery. Not less important is the function that they develop in the nutrients cycling making then available for plants. The ?3AS4? Streptomyces rishiriensis isolate was selected due to its exceptional phosphorus solubilization. The aim of this study was to investigate the possible mechanism of action involved in phosphorus solubilization and access the plant growth promotion ability of this strain. In order to recognize its mechanism of action, the crude extract was monitored during 10 days with HPLC. A greenhouse experiment was carried out to evaluate the potential plant growth promotion of the isolate in soybean. Besides the soil with no phosphorous, two...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Soja; Fósforo; Actinobacteria.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103527
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The role of common bean rhizosphere bacterial communities on phosphorus mobilization. Repositório Alice
CHIARAMONTE, J. B.; BULGARELLI, D.; COSTA, L. S. A. S.; ROSSMANN, M.; MENDES, R..
Acid soils are known for their high phosphate fixation potential, leading to an overage application of fertilizers. Microorganisms play important role in nutrient availability in the rhizosphere helping plants with phosphorus mobilization and uptake. We hypothesize that less efficient cultivars in phosphorus uptake, insoluble sources of phosphorus and limiting conditions of phosphorus in the soil could enrich the rhizosphere microbiome related to the availability of this nutrient. We performed a completely randomized factorial experiment with two common bean cultivars contrasting in phosphorus uptake efficiency growing in triple superphosphate or rock phosphate gradients. Sequencing of 16S rRNA amplicons were performed to access the rhizosphere community...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Beans; Rhizosphere; Phosphorus.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103542
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Wheat domestication impacts on rhizosphere bacterial community assembly (back to the roots iniciative). Repositório Alice
ROSSMANN, M.; CHIARAMONTE, J. B.; KAVAMURA, V. N.; MENDES, R..
2016
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Wheat; Rhizosphere.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1071456
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Wheat rhizosphere bacterial communities and tolerance against root rot caused by Fusarium graminearum. Repositório Alice
COSTA, L. S. A. S.; FARIA, M. R. de; CHIARAMONTE, J. B.; ROSSMANN, M.; BETTIOL, W.; MENDES, R..
The rhizosphere microbiome is essential for health and development of plants, providing protection against pests and diseases. Domestication of plant species may have affected the biodiversity of microbial communities in ancestral plant roots compared to the modern plants, which may have changed the defense process. As ancestral genotypes and modern cultivars may present different levels of tolerance to the pathogens, we investigated the correlation between eight wheat genotypes, including wild materials and cultivars, and the structure of microbial communities in the rhizosphere. We evaluated the variation in susceptibility to the pathogen by inoculating Fusarium graminearum in the soil six days after sowing. The level of disease was assessed four weeks...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Wheat; Rhizosphere; Roots.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103553
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