Root Exudates
Mostrando 1-12 de 82 artigos, teses e dissertações.
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1. Seed exudates of Sesbania virgata (Cav.) Pers. stimulate the asymbiotic phase of the arbuscular mycorrhizal fungus Gigaspora albida Becker & Hall
RESUMO Sesbania virgata é uma leguminosa utilizada na restauração de áreas degradadas e que forma simbiose com fungos micorrízicos arbusculares (AMF). Suas sementes exudam metabólitos secundários que podem influenciar a colonização pelos AMF. Neste trabalho, estudamos os efeitos de exsudatos de sementes (SE) e radiculares (RE) de S. virgata na fase
Hoehnea. Publicado em: 04/04/2019
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2. Control potential of Meloidogyne javanica and Ditylenchus spp. using fluorescent Pseudomonas and Bacillus spp.
ABSTRACT Plant Growth Promoting Rhizobacteria (PGPR) have different mechanisms of action in the development of plants, such as growth promotion, production of phytohormones and antibiotic substances and changes in root exudates. These help to control plant diseases. In order to evaluate the potential of microorganisms in the control of Meloidogyne javanica a
Braz. J. Microbiol.. Publicado em: 2018-03
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3. Flavonoid profiling and nodulation of some legumes in response to the allelopathic stress of Sonchus oleraceus L.
Annual sowthistle (Sonchus oleraceus) has been reported to produce allelopathic effects. Two greenhouse experiments were conducted to estimate the allelopathic potential of both plant residue and root exudates of S. oleraceus on flavonoid composition and nodulation in a leguminous crop, Trifolium alexandrinum, and in two leguminous weeds, Melilotus indicus a
Acta Bot. Bras.. Publicado em: 2015-12
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4. Input of sugarcane post-harvest residues into the soil
Sugarcane (Saccharum spp.) crops provide carbon (C) for soil through straw and root system decomposition. Recently, however, sugarcane producers are considering straw to be removed for electricity or second generation ethanol production. To elucidate the role of straw and root system on the carbon supply into the soil, the biomass inputs from sugarcane straw
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-10
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5. Specific plant induced biofilm formation in Methylobacterium species
Two endophytic strains of Methylobacterium spp. were used to evaluate biofilm formation on sugarcane roots and on inert wooden sticks. Results show that biofilm formation is variable and that plant surface and possibly root exudates have a role in Methylobacterium spp. host recognition, biofilm formation and successful colonization as endophytes.
Brazilian Journal of Microbiology. Publicado em: 2011-09
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6. Disponibilidade de elementos-traço para plantas em solos tratados com lodo de esgoto: metodologia
Com base em composições de ácidos orgânicos de exsudatos radiculares obtidos da rizosfera de plantas de milho cultivadas assepticamente, pH da rizosfera e matriz química da solução do solo, extratores sintéticos desses exsudatos foram formulados. Esses extratores, que imitam o ambiente da rizosfera, onde os elementos-traço do solo são dissolvidos e
Revista Brasileira de Ciência do Solo. Publicado em: 2011-08
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7. Etiology and epidemiology of Pythium root rot in hydroponic crops: current knowledge and perspectives.
The etiology and epidemiology of Pythium root rot in hydroponically-grown crops are reviewed with emphasis on knowledge and concepts considered important for managing the disease in commercial greenhouses. Pythium root rot continually threatens the productivity of numerous kinds of crops in hydroponic systems around the world including cucumber, tomato, swee
Summa Phytopathologica. Publicado em: 2011
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8. Structure and composition of bacterial and fungal community in soil under soybean monoculture in the Brazilian Cerrado
Soybean is the most important oilseed cultivated in the world and Brazil is the second major producer. Expansion of soybean cultivation has direct and indirect impacts on natural habitats of high conservation value, such as the Brazilian savannas (Cerrado). In addition to deforestation, land conversion includes the use of fertilizers and pesticides and can l
Brazilian Journal of Microbiology. Publicado em: 2010-06
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9. Comunidades microbianas em canais radiculares e abscessos periapicais agudos e suscetibilidade de algumas bacterias anaerobias estritas isoladas / Microbial communities in root canals and acute periradicular abscess and antimicrobial susceptibility of some strict anaerobes
The aim of this study was to examine the profile of microbial communities in necrotic root canals (RC) and acute periradicular abscesses (AP) in paired samples. The antimicrobial susceptibility was determined with E-test for strict anaerobes. Paired samples of RC and PA exudates were collected from 20 subjects and analyzed by terminal restriction fragment le
Publicado em: 2010
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10. Exudados de la raiz y su relevancia actual en las interacciones alelopaticas
Detrimental interactions among plants are expressed by competition for nutrients, chemical interferences and/or parasitism. Root exudates have an enormous potential at the modulation of these three mechanisms. These exudates play a key role as "phytoalexins release routes", being the allelochemicals, which regulate the chemical interactions, an example. This
Química Nova. Publicado em: 2009
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11. Sorção e persistência da sorgoleona em um Latossolo Vermelho-Amarelo
The root exudates produced by sorghum contain a biologically active constituent known as sorgoleone. The behavior of sorgoleone in a Red-Yellow Latosol was studied. The sorption model of sorgoleone in soil was better adjusted to the Freundlich equation, through the coefficients Kf (capacity of sorption) and 1/n (linearity of the isotherm). The persistence of
Química Nova. Publicado em: 2005-06
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12. Cytotoxicity analysis of EDTA and citric acid applied on murine resident macrophages culture. / "Análise da citotoxicidade do EDTA e do ácido cítrico aplicados em cultura de macrófagos peritoneais residentes"
The present study evaluated in vitro cytotoxic effects of 17% EDTA and 15% citric acid in murine resident macrophages using MTT assay. After anesthesia and sacrifice of thirty two Swiss male mice, it had processed the peritoneal cellular exudates by fresh culture medium injection and aspiration in peritoneal animals cavities. The peritoneal exudates were com
Publicado em: 2004