|
|
|
| Registros recuperados: 40 | |
|
| |
|
| |
|
|
| Mendoza,José Luis Hernández; Pérez,María Isabel Sánchez; Prieto,Juan Manuel González; Velásquez,Jesús DiCarlo Quiroz; Olivares,Jesús Gerardo García; Langarica,Homar Rene Gill. |
| Abstract Sampling of agricultural soils from the Mexican northeastern region was performed to detect Trichoderma spp., genetically characterize it, and assess its potential use as a biologic control agent against Macrophomina phaseolina. M. phaseolina is a phytopathogen that attacks over 500 species of cultivated plants and causes heavy losses in the regional sorghum crop. Sampling was performed immediately after sorghum or corn harvest in an area that was approximately 170 km from the Mexico-USA border. Sixteen isolates were obtained in total. Using colony morphology and sequencing the internal transcribed spacers (ITS) 1 and 4 of 18S rDNA, 14 strains were identified as Trichoderma harzianum, T. koningiopsis and T. virens. Subsequently, their antagonistic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macrophomina phaseolina; Antagonism; Hyperparasitism; Trichoderma. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401093 |
| |
|
|
| SANTOS,Andrés; NÚÑEZ-MONTERO,Kattia; LAMILLA,Claudio; PAVEZ,Mónica; QUEZADA-SOLÍS,Damián; BARRIENTOS,Leticia. |
| ABSTRACT The extreme weather conditions in the Antarctic have exerted selective pressures favoring differential features in bacteria to survive this untapped environment (i.e., antibiotic molecules). Notably, higher chances of antibiotic discovery from extremophiles have been proposed recently. Although new organic and environmentally friendly sources for helping in the control of plant pathogenic fungi are necessary, the information about anti-phytopathogenic applications of extremophile microorganisms from untapped environments is limited. In this study, we determined the antifungal effect of actinobacterial strains isolated from Antarctic soils and sediments. Co-culture inhibition assays and Minimum Inhibitory Concentration (MIC) determination revealed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Antarctic bacteria; Antifungal; Extremophile; Plant pathogen. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000200353 |
| |
|
|
| Orlandelli,Ravely Casarotti; Almeida,Tiago Tognolli de; Alberto,Raiani Nascimento; Polonio,Julio Cesar; Azevedo,João Lúcio; Pamphile,João Alencar. |
| Endophytes are being considered for use in biological control, and the enzymes they secrete might facilitate their initial colonization of internal plant tissues and direct interactions with microbial pathogens. Microbial proteases are also biotechnologically important products employed in bioremediation processes, cosmetics, and the pharmaceutical, photographic and food industries. In the present study, we evaluated antagonism and competitive interactions between 98 fungal endophytes and Alternaria alternata, Colletotrichum sp., Phyllosticta citricarpa and Moniliophthora perniciosa. We also examined the proteolytic activities of endophytes grown in liquid medium and conducted cup plate assays. The results showed that certain strains in the assemblage of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Competitive interaction; Dual culture; Cup plate; Protease. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200359 |
| |
|
| |
|
|
| D'Agosto,Marta; Guedes,Paulo Marcos da Matta. |
| Aiming at obtaining the community profile and verifying the occurrence of antagonism and association among ciliates, samples of rumen content were analysed in 100 bovines soon after their death. The animals were killed at the Juiz de Fora Municipal slaughter house (Juiz de Fora, Minas Gerais State, Brazil) between August 1996 and May 1997. Ciliates occurred, respectively, in the following percents and samples number: Entodinium Stein, 1859 (50,48; 100), Diplodinium Schuberg, 1888 (5,59; 98), Eudiplodinium Dogiel, 1927 (6,91; 97), Ostracodinium Dogiel, 1927 (9,68; 95), hotricha Stein, 1859 (4,15; 93), Dasytricha Schuberg, 1888 (3,31; 93), Metadi nium Awerinzew & Mutafowa, 1914 (3,06; 90), Eremoplastron Kofoid & MacLennan. 1932 (7,39; 87),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rumen ciliate; Behaviour; Bovine; Community profile; Antagonism. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400011 |
| |
|
| |
|
| |
|
|
| Dalzotto,Laís; Tortelli,Brenda; Stefanski,Francine Spitza; Sacon,Deivid; Silva,Vanessa Neumann; Milanesi,Paola Mendes. |
| ABSTRACT: In the search for improved yields, seed treatment by microbiolization has been used as an alternative to chemical treatment. The objective was to verify the physiological and sanitary quality of creole bean seeds, var. Chumbinho, after microbiolization with doses of a commercial product (c.p.) with Trichoderma harzianum (strain ESALQ-1306). The treatments were: T1) 100 mL c.p./100 kg seeds; T2) 150 mL c.p.; T3) 200 mL c.p.; T4) 200 mL of chemical treatment (c.p., 250 g L-1 fipronil + 25 g L-1 pyraclostrobin + 225 g L-1 thiophanate-methyl); and T5) control (without coating of seeds). The tests were: sanitary test (blotter test); germination and first count; accelerated aging, cold germination without soil, speed of germination rate (SGR), seedling... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Biological control; Phaseolus vulgaris L.; Vigor.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000500151 |
| |
|
|
| Tlapal Bolaños, Bertha. |
| La marchitez es uno de los problemas fitosanitario más importantes en el agave tequilero Agave tequilana Weber var. Azul, enfermedad que esta asociada con varios microorganismos y que principalmente se presenta en plantaciones de más de 2 años de edad. Entre los posibles agentes causales de esta enfermedad se reportan a varias especies de Fusarium spp., así como a Thielaviopsis paradoxa. En el presente trabajo se planteó el de inocular con organismos benéficos plantas de agave tequilero que se usan como material propagativo en vivero para nuevas plantaciones, como parte de un manejo preventivo e integrado del cultivo. En este trabajo se estudió en vivero (Rancho El Indio, Tequila, Jalisco) y en campo, en plantaciones comerciales de agave en las... |
|
Palavras-chave: Marchitez del agave; Fusarium spp.; Antagonismo; Supresividad; Agave wilt; Antagonism; Suppressive; Fitopatología; Doctorado. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2117 |
| |
|
|
| Lima,Alita Moura de; Salem,Júlia Ignez; Souza,João Vicente Braga de; Cortez,Ana Claudia Alves; Carvalho,Clarice Maia; Chaves,Francisco Célio Maia; Veiga Junior,Valdir Florêncio da. |
| Substances that inhibit the growth of Mycobacterium tuberculosis could potentially be used as antibiotics. These substances could also be added to test culture media to improve the speed of tuberculosis diagnosis. The aim of this work was to investigate the influence of culture filtrates of endophytic fungi isolated from P. aduncum L. on the growth of M. tuberculosis. To achieve this objective, the following methodology was used: a) endophytic fungi were isolated from the leaves and stems of P. aduncum L.; b) the isolated fungi were submitted to submerged bioprocessing; c) culture filtrates from the bioprocess were assayed to evaluate their effect on the growth of M. tuberculosis. We isolated 315 fungal types, which represented 85 morphologies, from... |
| Tipo: Journal article |
Palavras-chave: Antagonism; Stimulation growth; Tuberculosis. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400008 |
| |
|
|
| Carvalho,FB de; Stringhini,JH; Matos,MS; Café,MB; Leandro,NSM; Gomes,NA; Santana,ES; Jardim Filho,RM. |
| This experiment aimed at evaluating the influence of the supplementation of digestible lysine and digestible arginine at different ratios in the diet fed to layers between 24 to 44 weeks of age on egg quality. In total,320 Lohmann LSL laying hens were allotted according to a completely randomized design in a 2 x 4factorial arrangement, consisting of two digestible lysine levels (700 or 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900,or 1000 mg/kg of diet). Diets contained, therefore, digestible Lys:Arg ratios of 100, 114, 128, and 142 when the diet contained 700 mg digestible lysine per kg of diet, and 78, 89, 100, and 111 when 900 mg digestible lysine per kg was supplemented. The data obtained with digestible arginine levels were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Digestible amino acid; Egg components; Haugh units. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100063 |
| |
|
|
| Gama,Danielly de Souza; Santos,Ítalo Augusto Férrer Melo; Abreu,Lucas Magalhães de; Medeiros,Flávio Henrique Vasconcelos de; Duarte,Whasley Ferreira; Cardoso,Patrícia Gomes. |
| ABSTRACT: Fungal endophytes of Brachiaria, a nonhost of Sclerotinia sclerotiorum, may harbor species with antagonistic effects against this plant pathogen. The objective of this work was to investigate the diversity of endophytic fungi associated with different Brachiaria species and hybrids and evaluate their potential to inhibit the plant pathogen S. sclerotiorum. Stem samples from 39 Brachiaria spp. plants were collected in pasture fields and experimental areas of three states of Brazil resulting in 74 endophytes isolated. Twenty-eight species were identified by sequences of the Internal Transcribed Spacer (ITS) and 18S rDNA regions. Paraconiothyrium sp. was the most abundant endophyte, accounting for 24 % (14 isolates) of total, and it was isolated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coniothyrium-like fungi; Urochloa; Tropical forage grasses; Antagonism; White mold. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000300200 |
| |
|
|
| SANTOS, J. C. F.; COSTA, R. S. C. da; LEONIDAS, F. das C.; RODRIGUES, V. G. S.. |
| Devido a importância econômica do café no âmbito da produção e do consumo internacional, diversos estudos alelopáticos vêm sendo desenvolvidos com esta cultura nos últimos anos, objetivando a determinação de sua auto-intoxicação ou efeito sobre outras espécies de plantas, bem como influência de outras plantas sobre esta cultura. Em vista disso, este trabalho tem como objetivo principal, consolidar alguns resultados de pesquisas sobre a alelopatia, envolvendo a cultura do café, de maneira que possa contribuir como referencial para o fortalecimento de futuros trabalhos de pesquisas e produção. |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Antagonism; Cafeicultura; Alelopatia; Antagonismo; Competição Biológica; Coffee beans; Allelopathy; Ecological competition. |
| Ano: 2001 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/703812 |
| |
|
|
| Santos,João Paulo Victorino; Araújo,Tatiane Ferreira; Ferreira,Célia Lúcia de Luces Fortes; Goulart,Simone Machado. |
| In this study, the potential of kefir grains, obtained from three different towns/cities in the Southeast Region of Brazil to inhibit the growth of the five pathogenic microorganisms was evaluated. The samples showed the growth inhibition from 42.80-69.15 for Staphylococcus aureus ATCC 6538, 30.73-59.89 for Escherichia coli ATCC 11229, 44.99-73.05 for Salmonela typhi ATCC 6539, 41.45-54.18 for Listeria monocytogenes ATCC 15313 and 70.38-86.80 for Bacillus cereus RIBO 1222-173-S4. These results indicated that the kefir grains evaluated had antagonistic activity toward the different pathogens tested. The ability to inhibit, although differently depending on the regional microbiota, indicated a potential for their use as a functional food. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kefir; Antagonism; Inhibitors; Functional foods. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500014 |
| |
|
|
| Maia,Natália da Costa; Souza,Patrícia Nirlane da Costa; Godinho,Bárbara Temponi Vilarino; Moreira,Silvino Intra; Abreu,Lucas Magalhães de; Jank,Liana; Cardoso,Patrícia Gomes. |
| ABSTRACT This study aimed to isolate and identify endophytic fungi from the forage grass P. maximum and evaluate their ability to inhibit the growth of plant pathogenic fungi. One sample from P. purpureum grass was also included. Surface disinfected stem fragments were used for endophytic fungal isolation. One hundred and twenty-six endophytic fungi were isolated, of which 118 were from P. maximum and eight from P. purpureum. Morphological characteristics and internal transcribed spacer (ITS) and 18S (NS) sequence comparisons identified most isolated endophytic fungi as belonging to the phylum Ascomycota, with Sarocladium being the dominant genus. The isolates were subjected to in vitro antagonism tests against pathogenic fungi, and 31 endophytic fungi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Grasses; Molecular identification; Plant pathogens; RDNA. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100303 |
| |
|
|
| Costa,N.V.; Zobiole,L.H.S.; Scariot,C.A.; Pereira,G.R.; Moratelli,G.. |
| The loss of grains during the harvest of glyphosate tolerant corn may generate volunteer plants, which can interfere in the conventional or glyphosate crop in succession. The current work aim to evaluate the control of the volunteer corn glyphosate tolerant under two weed stages. Aimed to evaluate the control of volunteer glyphosate tolerant corn in two stages of development. There were conducted two experiments with hybrid 2B688 HR (lepidoptera and glyphosate tolerant), the application were at V5 and V8 stage. The experiment was randomized block design with four replicates, using the treatments: haloxyfop at 25, 50 and 62 g ha-1 alone and associated with 2,4-D at 670 g ha-1 or fluroxypyr at 200 g ha-1. The standard was clethodim at 84 g ha-1 with 2,4-D... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enetically modified; In tank mixture; ACCase inhibitors; Auxin inhibitors; Antagonism; Rampant weed. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400002 |
| |
|
|
| FREITAS,N.M.; FREITAS,F.C.L.; FURTADO,I.F.; TEIXEIRA,M.F.F.; SILVA,V.F.. |
| ABSTRACT: The dayflower species Commelina benghalensis and C. diffusa are among the main weeds in coffee crops. The purpose of this study was to evaluate the efficacy of herbicides/herbicide mixtures in controlling dayflower species and to evaluate the possible intoxication of coffee cultures, as well as the effect of mixture interactions. Two experiments were conducted, the first one in a 12 x 2 factorial arrangement with 12 herbicides/mixtures (glyphosate, glyphosate + metsulfuron-methyl, glyphosate + flumioxazin, glyphosate + 2.4-D, glyphosate + oxyfluorfen, glyphosate + carfentrazone-ethyl, metsulfuron-methyl, flumioxazin, 2.4-D, oxyfluorfen and carfentrazone-ethyl) and two dayflower species (C. benghalensis and C. diffusa) and the second one, in a 6 x... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Coffea arabica; Commelina benghalensis; Commelina diffusa; Synergism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100248 |
| |
|
|
| Branco,K.M.G.R.; Nardi,R.M.D.; Moreira,J.L.S.; Nunes,A.C.; Farias,L.M.; Nicoli,J.R.; Carvalho,M.A.R.. |
| Lactobacilli isolated from the vaginal tract of women with and without bacterial vaginosis (BV) were identified and characterized for the production of antagonists. Bacterial samples were isolated from healthy women (N = 16), from patients with clinical complaints but without BV (N = 30), and from patients with BV (N = 32). Identification was performed using amplified ribosomal DNA restriction analysis. Production of antagonistic compounds was evaluated by the double-layer diffusion technique using Gram-positive (N = 9) and Gram-negative bacteria (N = 6) as well as yeast (N = 5) as indicator strains. Of a total of 147 isolates, 133 were identified as pertaining to the genus Lactobacillus. Lactobacillus crispatus was the species most frequently recovered,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactobacillus; Bacterial vaginosis; Antagonism; Hydrogen peroxide; Identification. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000400003 |
| |
| Registros recuperados: 40 | |
|
|
|
