|
|
|
| Registros recuperados: 58 | |
|
|
| Oliva-Ortiz,Luz del C.; Velázquez-Alcaraz,Teresa de J.; Sosa-Pérez,Rogelio; Partida-Ruvalcaba,Leopoldo; Díaz-Valdés,Tomás; Arciniega-Ramos,Julio; López-Orona,Carlos A.. |
| Resumen La fusariosis vascular del garbanzo (Cicer arietinum L.) aumenta debido a la dificultad para controlarla. El control químico disminuye la biodiversidad y contamina el ambiente, por lo cual se deben desarrollar medidas sustentables para limitar la enfermedad. Por lo tanto, el objetivo de este estudio fue determinar el potencial de cepas bacterianas y fúngicas, nativas de Sinaloa, como agentes biocontrol de esta enfermedad en plantas de garbanzo cultivadas en invernadero. La hipótesis fue que las cepas bacterianas y fúngicas nativas son una alternativa para controlar de la fusariosis vascular del garbanzo porque inhiben Fusarium oxysporum f. sp. ciceris. La inhibición de las cepas de control biológico se evaluó sobre el crecimiento radial de Fusarium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control biológico; Cepas nativas; Bacillus; Trichoderma; Pseudomonas; Fusarium oxysporum f. sp. ciceris. |
| Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000600683 |
| |
|
| |
|
| |
|
|
| Figueirêdo,Girlene Soares de; Figueirêdo,Lívio Carvalho de; Cavalcanti,Francinete Carla Nunes; Santos,Angela Coimbra dos; Costa,Antonio Felix da; Oliveira,Neiva Tinti de. |
| Four isolates of Sclerotinia sclerotiorum were tested for pathogenicity in IPA-10 variety bean plants (Phaseolus vulgaris L.), and all were pathogenic. Biological control in vitro was evaluated using eight isolates of Trichoderma spp. and, one of Ulocladium atrum. Chemical control in vitro with fungicides Thiophanate methyl, Iprodione and Carbendazim was also tested. Except U. atrum, all Trichoderma isolates showed antagonistic potential against S. sclerotiorum, where isolate 3601 presented the best performance. Thiophanate methyl chemical control was the most efficient. This fungicide and isolate 3601were compared in vivo in greenhouse. There was statistical difference between the treatments, and the application of fungicide and antagonist before the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: S. sclerotiorum; Trichoderma; Antagonist; Bean plant. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100001 |
| |
|
|
| Silveira,F.Q.P.; Ximenes,F.A.; Cacais,A.O.G.; Milagres,A.M.F.; Medeiros,C.L.; Puls,J.; Filho,E.X.F.. |
| Xylanase activity was isolated from crude extracts of Trichoderma harzianum strains C and 4 grown at 28oC in a solid medium containing wheat bran as the carbon source. Enzyme activity was demonstrable in the permeate after ultrafiltration of the crude extracts using an Amicon system. The hydrolysis patterns of different xylans and paper pulps by xylanase activity ranged from xylose, xylobiose and xylotriose to higher xylooligosaccharides. A purified ß-xylosidase from the Trichoderma harzianum strain released xylose, xylobiose and xylotriose from seaweed, deacetylated, oat spelt and birchwood xylans. The purified enzyme was not active against acetylated xylan and catalyzed the hydrolysis of xylooligosaccharides, including xylotriose, xylotetraose and... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Trichoderma; Xylan; Xylanase. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000800003 |
| |
|
|
| Rossi-Rodrigues,Bianca Caroline; Brochetto-Braga,Márcia Regina; Tauk-Tornisielo,Sâmia Maria; Carmona,Eleonora Cano; Arruda,Valeska Marques; Chaud Netto,José. |
| Trichoderma is one of the fungi genera that produce important metabolites for industry. The growth of these organisms is a consequence of the nutritional sources used as also of the physical conditions employed to cultivate them. In this work, the automated Bioscreen C system was used to evaluate the influence of different nutritional sources on the growth of Trichoderma strains (T. hamatum, T. harzianum, T. viride, and T. longibrachiatum) isolated from the soil in the Juréia-Itatins Ecological Station (JIES), São Paulo State - Brazil.The cultures were grown in liquid culture media containing different carbon- (2%; w/v) and nitrogen (1%; w/v) sources at 28ºC, pH 6.5, and agitated at 150 rpm for 72 h. The results showed, as expected, that glucose is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioscreen C system; Growth; Trichoderma; Tryptone; Yeast extract. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200035 |
| |
|
|
| 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 |
| |
|
| |
|
|
| Nongmaithem,Nabakishor; Roy,Ayon; Bhattacharya,Prateek Madhab. |
| Abstract Fourteen Trichoderma isolates were evaluated for their tolerance to two heavy metals, nickel and cadmium. Three isolates, MT-4, UBT-18, and IBT-I, showed high levels of nickel tolerance, whereas MT-4, UBT-18, and IBT-II showed better tolerance of cadmium than the other isolates. Under nickel stress, biomass production increased up to a Ni concentration of 60 ppm in all strains but then decreased as the concentrations of nickel were further increased. Among the nickel-tolerant isolates, UBT-18 produced significantly higher biomass upon exposure to nickel (up to 150 ppm); however, the minimum concentration of nickel required to inhibit 50% of growth (MIC50) was highest in IBT-I. Among the cadmium-tolerant isolates, IBT-II showed both maximum biomass... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metals; Biosorption; Trichoderma; MIC50; Fungistasis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200305 |
| |
|
|
| Asad,Saeed Ahmad; Tabassum,Ayesha; Hameed,Abdul; Hassan,Fayyaz ul; Afzal,Aftab; Khan,Sabaz Ali; Ahmed,Rafiq; Shahzad,Muhammad. |
| Abstract This study investigated lytic enzyme activities in three indigenous Trichoderma strains namely, Trichoderma asperellum, Trichoderma harzianum and Trichoderma sp. Native Trichoderma strains and a virulent strain of Rhizoctonia solani isolated from infected bean plants were also included in the study. Enzyme activities were determined by measuring sugar reduction by dinitrosalicylic acid (DNS) method using suitable substrates. The antagonists were cultured in minimal salt medium with the following modifications: medium A (1 g of glucose), medium B (0.5 g of glucose + 0.5 g of deactivated R. solani mycelia), medium C (1.0 g of deactivated respective antagonist mycelium) and medium D (1 g of deactivated R. solani mycelia). T asperellum showed presence... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lytic enzymes; Mycoparasitic activity; Rhizoctonia solani; Trichoderma. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401053 |
| |
|
|
| Marco,Janice Lisboa De; Valadares-Inglis,Maria Cléria; Felix,Carlos Roberto. |
| Two isolates of Trichoderma, which reduce the incidence of witches'broom disease caused in cocoa by Crinipellis perniciosa, were evaluated for their potential to produce hydrolases in liquid medium. Very low or no hydrolytic activity was produced in the absence of any substrate. The activities of chitinase, N-acetylglucosaminidase, beta-1,3-glucanase, total cellulase, endoglucanase, aryl- beta-glucosidase, beta-glucosidase, protease and amylase increased dramatically within 72-120 h of growth in the presence of specific substrates. Except for N-acetylglucosaminidase and beta-glucosidase Trichoderma harzianum isolate 1051 produced the largest amounts of hydrolases. The possible involvement of these enzymes in the antagonistic interaction between Trichoderma... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoderma; Crinipellis perniciosa; Hydrolases; Antagonistic interaction. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000100008 |
| |
|
|
| Firmino,Alexandre A.P.; Ulhoa,Cirano J.; Sousa,Marcelo V.; Ferreira Filho,Edivaldo X.; Ricart,Carlos A.O.. |
| The effect of G protein modulators and cyclic AMP (cAMP) on N-acetylglucosaminidase (NAGase) production was investigated during 84 h of growth of a Trichoderma harzianum strain in chitin-containing medium. Caffeine (5 mM), N6--2'-O-dibutyryladenosine 3'5'-cyclic monophosphate sodium salt (dBcAMP) (1 mM) and 3-isobutyl-1-methylxanthine (IBMX) (2 mM) decreased extracellular NAGase activity by 80%, 77% and 37%, respectively. AlCl3/KF (100 µM/10 mM and 200 µM/ 20 mM) decreased the activity by 85% and 95%, respectively. Cholera (10 µ/mL) and pertussis (20 µ/mL) toxins also affected NAGase activity, causing a decrease of approximately 75%. Upon all treatments, protein bands of approximately 73 kDa, 68 kDa and 45 kDa had their signals diminished whilst a 50 kDa... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoderma; N-acetylglucosaminidase; Chitinase; CAMP; G protein. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000200015 |
| |
|
|
| Jadon,Kuldeep Singh; Shah,Rakesh; Gour,Hari Narayan; Sharma,Pankaj. |
| Abstract Sweet or bell pepper is a member of the Solanaceae family and is regarded as one of the most popular and nutritious vegetable. Blight, in the form of leaf and fruit blight, has been observed to infect bell pepper crops cultivated at the horticulture farm in Rajasthan College of Agriculture, Udaipur, India. Based on disease severity, we attempted to curb this newly emerged problem using different fungicides, plant extracts, bio-control agents, and commercial botanicals against the fungus in laboratory and pot experiments. Bio-control agent Trichoderma viride and plant growth promoting Rhizobacteria (PGPR) isolate Neist-2 were found to be quite effective against bell pepper blight. All evaluated fungicides, botanicals, commercial botanicals, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant extracts; Bio-control agents; Trichoderma; PGPR; Botanicals; Neem oil; Zatropin; Fungicides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000401020 |
| |
|
|
| Karthikeyan,M.; Radhika,K.; Mathiyazhagan,S.; Bhaskaran,R.; Samiyappan,R.; Velazhahan,R.. |
| The effect of soil application of biocontrol agents (Pseudomonas fluorescens, Trichoderma viride and T. harzianum) in combination with chitin on induction of phenolics and defense enzymes in coconut roots infected with Ganoderma lucidum, the causal agent of Ganoderma disease, was investigated. Soil application of these biocontrol formulations in combination with chitin induced a significant increase in the activities of peroxidase (PO), polyphenol oxidase (PPO), phenylalanine ammonia-lyase (PAL), chitinase and beta-1,3-glucanase in the G. lucidum infected palms. Activities of both PAL and PO reached maximum levels within 3 d while the activity of PPO reached the maximum level 6 d after application of a mixture of P. fluorescens, T. viride and chitin.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitin; Ganoderma disease; Induced systemic resistance; Pathogenesis-related proteins; Phenolics; Pseudomonas fluorescens; Trichoderma. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000300003 |
| |
|
|
| Sandoval,Claudio; Terreros,Valeria; Schiappacasse,Flavia. |
| Carnations, Dianthus caryophyllus, have been cultivated in Chile for several decades as a cut flower crop. At the present time, floriculture occupies 2,124 ha, of which 180 ha are devoted to carnations. Almost all carnations produced are sold in the domestic market. Several diseases affect carnations, among them fairyring leaf spot (Cladosporium echinulatum), the most important foliar disease in Chile. Different control alternatives for fairy-ring spot were evaluated on the carnation cv. Sarinah in terms of disease incidence and severity. The study was performed in June-August 2003 with a commercial carnation planting in a greenhouse located in Champa(33° 49' S, 70° 45' W) that in previous growing seasons reported a high incidence of fairyring leaf spot.... |
| Tipo: Journal article |
Palavras-chave: Carnation; Cladosporium; Dianthus caryophyllus; Foliar diseases; Sodium bicarbonate; Trichoderma. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300015 |
| |
|
| |
|
|
| Argumedo Delira, Rosalba. |
| Las especies del género Trichoderma representan un grupo de hongos filamentosos que pertenecen al Reino Mycetae (Fungi), División Eumycota, Subdivisión Ascomycotina, Clase Euascomycetes, Orden Hypocreales, Familia Hypocraceae y Género Trichoderma e Hypocrea. Estos hongos se caracterizan por predominar en los ecosistemas terrestres y acuáticos. Los miembros del género Trichoderma tienen el potencial de sintetizar y liberar diversas enzimas que se han aprovechado en procesos industriales. Además, este grupo fúngico es importante para las plantas, al contribuir en el control de organismos fitopatógenos ya que poseen propiedades micoparasíticas y antibióticas. Por otro lado, las especies del género Trichoderma son capaces de acumular metales pesados, degradar... |
|
Palavras-chave: Trichoderma; Tolerancia; Citocromo P450; Naftaleno; Metales pesados; Fenantreno; Benzo[a]pireno; Tolerance; Heavy metals; Cytochrome P450; Naphthalene; Phenanthrene; Doctorado; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/389 |
| |
|
| |
|
|
| Argumedo Delira, Rosalba. |
| Las especies del género Trichoderma representan un grupo de hongos filamentosos que pertenecen al Reino Mycetae (Fungi), División Eumycota, Subdivisión Ascomycotina, Clase Euascomycetes, Orden Hypocreales, Familia Hypocraceae y Género Trichoderma e Hypocrea. Estos hongos se caracterizan por predominar en los ecosistemas terrestres y acuáticos. Los miembros del género Trichoderma tienen el potencial de sintetizar y liberar diversas enzimas que se han aprovechado en procesos industriales. Además, este grupo fúngico es importante para las plantas, al contribuir en el control de organismos fitopatógenos ya que poseen propiedades micoparasíticas y antibióticas. Por otro lado, las especies del género Trichoderma son capaces de acumular metales pesados, degradar... |
|
Palavras-chave: Trichoderma; Tolerancia; Citocromo P450; Naftaleno; Metales pesados; Fenantreno; Benzo[a]pireno; Tolerance; Heavy metals; Cytochrome P450; Naphthalene; Phenanthrene; Doctorado; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/389 |
| |
|
|
| Besoain,Ximena A; Pérez,Luz María; Araya,Antonio; Lefever,Llacolén; Sanguinetti,; Montealegre,Jaime R. |
| The obtainment of 30 new strains from native Trichoderma harzianum after UV light irradiation (UV-A and UV-C), and of 82 strains resulted from protoplast fusion were accomplished. The new strains, initially selected for their growing rate under low temperature and high pH conditions, as well as for their innocuousness on tomato plants, were tested for in vitro inhibition of Pyrenochaeta lycopersici in dual cultures and due to secretion of volatile and diffusible metabolites. All the UV-A and UV-C selected candidate mutants were innocuous to tomato plants, but none of them showed improvement in their biocontrol activity on P. lycopersici. Th12A20.1 increased 1.3 and 1.9 fold the total fresh weight of Fortaleza tomato plants when compared to its parental... |
| Tipo: Journal article |
Palavras-chave: Corky root; Mutagenesis; Tomato diseases; Trichoderma; Volatile and diffusible metabolites. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000400013 |
| |
| Registros recuperados: 58 | |
|
|
|
