|
|
|
| Registros recuperados: 40 | |
|
|
| 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 |
| |
|
|
| Guo,Qinggang; Li,Shezeng; Lu,Xiuyun; Li,Baoqing; Ma,Ping. |
| The Bacillus subtilis strain NCD-2 is an important biocontrol agent against cotton verticillium wilt and cotton sore shin in the field, which are caused by Verticillium dahliae Kleb and Rhizoctonia solani Kuhn, respectively. A mutant of strain NCD-2, designated M216, with decreased antagonism to V. dahliae and R. solani, was selected by mini-Tn10 mutagenesis and in vitro virulence screening. The inserted gene in the mutant was cloned and identified as the phoR gene, which encodes a sensor kinase in the PhoP/PhoR two-component system. Compared to the wild-type strain, the APase activities of the mutant was decreased significantly when cultured in low phosphate medium, but no obvious difference was observed when cultured in high phosphate medium. The mutant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus subtilis; Antagonism; Verticillium dahliae; Mini-Tn10. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200022 |
| |
|
|
| Beneduzi,Anelise; Ambrosini,Adriana; Passaglia,Luciana M.P.. |
| Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria (PGPR). PGPR are highly diverse and in this review we focus on rhizobacteria as biocontrol agents. Their effects can occur via local antagonism to soil-borne pathogens or by induction of systemic resistance against pathogens throughout the entire plant. Several substances produced by antagonistic rhizobacteria have been related to pathogen control and indirect promotion of growth in many plants, such as siderophores and antibiotics. Induced systemic resistance (ISR) in plants resembles pathogen-induced systemic acquired resistance (SAR) under conditions where the inducing bacteria and the challenging pathogen remain spatially separated. Both... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Siderophore; Antibiotic; SAR; ISR. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600020 |
| |
|
|
| 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 |
| |
|
| |
|
|
| Gay, Melanie; Berthe, Franck; Leroux, Frederique. |
| In an attempt to develop a reproducible experimental model of bacterial infection in Crassostrea gigas, oysters taken from very localised sub-populations suffering natural mortality outbreaks were used in cohabitation trials under laboratory conditions. From these trials, a collection of Vibrio strains was isolated from moribund and healthy oysters. In a second step, strains were experimentally tested for virulence by means of injection into healthy oysters. This screening revealed a span of virulence among isolated strains from none to medium. When pooling injected strains, results suggest increased virulence. Vibrio strains may have additive/synergistic action leading to higher C, gigas mortality rates in experimental challenges. Although the study... |
| Tipo: Text |
Palavras-chave: Crassostrea gias; Antagonism; Agonism; Virulence; Vibrio splendidus. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-3174.pdf |
| |
|
|
| Lamari, Faouzi; Sadok, Khouadja; Bakhrouf, Amina; Gatesoupe, Joel. |
| Lactic acid bacteria (LAB) were isolated from rotifer cultures in a marine hatchery to search for potential probiotics for marine animals. Fifteen strains were first selected among a total of 55, according to antibacterial activity against Vibrio sp. Among eight strains identified as Lactobacillus casei, four were highly adhesive, suggesting some ability for surface colonization. The other strains were identified as Lactobacillus plantarum, Lactobacillus dextrinicus, and Leuconostoc sp. To validate probiotic potential, Artemia were challenged against pathogenic Vibrio alginolyticus, with or without one of six selected LAB strains. The six strains protected Artemia against the pathogen, to some extent on condition that nutrient enrichment was provided. La.... |
| Tipo: Text |
Palavras-chave: 16S rDNA; Antagonism; Artemia; Lactic acid bacteria; Vibrio. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00154/26511/24767.pdf |
| |
|
| |
|
|
| 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 |
| |
|
|
| VIECELLI,M.; PAGNONCELLI JR.,F.B.; TREZZI,M.M.; CAVALHEIRO,B.M.; GOBETTI,R.C.R.. |
| ABSTRACT: The combination of herbicides and other pesticides can influence weed and crop management. This study aimed to evaluate the response of the combination of different herbicides with insecticides or fungicides of different chemical groups on the development and yield of wheat grains of the cultivar ORS Vintecinco. The experimental design was a randomized block design with three replications. The experiment consisted of 33 treatments, as follows: control without application and application of the herbicides 2,4-D (1,005 g a.e. ha-1), bentazon (756 g a.i. ha-1), metsulfuron-methyl (3 g a.i. ha-1), and pyroxsulam (16 g a.i. ha-1), isolated or combined with the insecticides chlorfluazuron (15 g a.i. ha-1), chlorpyrifos (720 g a.i. ha-1), deltamethrin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Synergism; Antagonism; Tolerance; Grain yield. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100263 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Sousa,JPL de; Albino,LFT; Vaz,RGMV; Rodrigues,KF; Da Silva,GF; Renno,LN; Barros,VRSM; Kaneko,IN. |
| The dietary inclusion of phytase increases nutrient and energy bioavailability for broilers. The effect of phytase increases nutrients and energy bioavailability for either the objective of this experiment was to evaluate the influence of nutrient and energy reduction in diets supplemented with phytase on the performance, gastrointestinal pH, organ and bone composition, and blood biochemistry of broilers between eight and 21 days of age. In the study, 1.120 male Cobb 500(r) broilers, with 161±1g average weight, were used. At eight days of age, birds were distributed according to a completely randomized experimental design with seven treatments in a 3x2+1 factorial arrangement with eight replicates of 20 broiler each. Treatments corresponded to reduction of... |
| 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=S1516-635X2015000100069 |
| |
|
| |
|
|
| Carvalho,Fabyola Barros de; Stringhini,José Henrique; Matos,Maíra Silva; Jardim Filho,Roberto Moraes; Café,Marcos Barcellos; Leandro,Nadja Susana Mogyca; Andrade,Maria Auxiliadora. |
| The objective of this experiment was to evaluate the effect of two digestible lysine levels and four digestible arginine levels on laying hens from 24 to 48 weeks of age. Three hundred and twenty Lohmann LSL laying hens were allotted in a completely randomized design in a 2 × 4 factorial arrangement, with two levels of digestible lysine (700 and 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900 and 1000 mg/kg of diet). Results indicated requirement of 884 and 830 mg of digestible arginine/kg of diet, considering an average feed intake of 95 g/hen/day and an average hen weight of 1.5 kg, aiming at lesser feed intake and better nutritional balance of nitrogen, respectively. High digestible lysine levels in the diet require higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antagonism; Digestibility; Digestible amino acids; Egg; Production. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000007 |
| |
|
|
| 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 |
| |
| Registros recuperados: 40 | |
|
|
|
