Consulta: creatorFacets:"Marques,Eder"
Registros recuperados: 4
Data/hora: 10/06/2024 05:34:25

Identification and pathogenicity of Pseudomonas cichorii associated with a bacterial blight of gerbera in the Federal District
Provedor de dados: 75
Autores: Marques,Eder; Borges,Rafaela CF; Uesugi,Carlos H.
ABSTRACT: In 2013, leaf samples of gerbera plants showing symptoms of bacterial blight were collected in cut-flower high tunnels, in the settlement of núcleo rural alexandre gusmão, located in brazlândia, distrito federal, brazil. seven isolates obtained were subjected to phenotypic and molecular characterization, including pathogenicity tests, lopat, and partial sequencing of the 16s rdna gene. all isolates were gram-negative, aerobic, oxidase-positive, produced fluorescent pigment, induced hypersensitivity in tobacco leaves, used sorbitol and glutamate and were pathogenic to 24 different plant species. results of these tests and analysis of the sequences of rdna showed 100% identity with pseudomonas cichorii. to our knowledge, this is the first report of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gerbera jamesonii; Leaf spot; LOPAT.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000200244

New isolates of Trichoderma antagonistic to Sclerotinia sclerotiorum
Provedor de dados: 49
Autores: Marques,Eder; Martins,Irene; Cunha,Mariana de Oliveira Cardoso; Lima,Marcello Arrais; Silva,João Batista Tavares da; Silva,Joseane Padilha da; Inglis,Peter Ward; Mello,Sueli Correa Marques.
Abstract Forty-nine isolates of Trichoderma from the Brazilian Midwest were evaluated for their antagonistic activity in vitro against Sclerotinia sclerotiorum (causal agent of white mold), which were then identified based on their nuclear ribosomal ITS sequences. Paired culture tests showed that all isolates exhibited some antagonism, with a maximum of 77% mycelial inhibition and complete inhibition of sclerotia production. Two isolates were found to be the most promising biocontrol agents, considering both antagonistic parameters (CEN1253 - T. koningiopsis and CEN1265 - T. brevicompactum). Five different species were identified: T. harzianum (23), T. spirale (9), T. koningiopsis (8), T. brevicompactum (7) and T. asperellum (2). These isolates are stored...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial genetic resources; Molecular identification; Biocontrol; White mold.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000300209

Antifungal potential of crude extracts of Trichoderma spp.
Provedor de dados: 49
Autores: Marques,Eder; Martins,Irene; Mello,Sueli Correa Marques de.
Abstract Antibiosis is the mechanism by which certain microorganisms respond to the presence of others, secreting compounds or metabolites capable of inhibiting or impeding their development. The crude extract of Trichoderma contains a mixture of secondary compounds, which may show antibiotic effect, and has been used for the prospect of this fungus for biological control and other industrial purposes. Faced with the increasing demand of agriculture for ecologically compatible alternatives for the management of diseases, this work aimed to investigate the spectrum of action of Non-Volatile Metabolites (NVMs) of Trichoderma isolates against different plant pathogenic fungi. The antagonistic potential of NVMs was evaluated through the incorporation method of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Secondary metabolites; Antagonism; Inhibition of mycelial growth; Plant pathogenic fungi.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100503

Virulência de estirpes (biovar 1 e 2T) de Ralstonia solanaceraum a Eucalyptus spp.
Provedor de dados: 65
Autores: Marques,Eder; Uesugi,Carlos Hidemi; Blum,Luiz Eduardo Bassay.
A murcha bacteriana do eucalipto (Raça 3 biovar 2T de Ralstonia solanacearum) foi descrita em 2009 em campo com o híbrido de eucalipto urograndis. O objetivo deste trabalho foi avaliar a virulência de duas estirpes de R. solanacearum a dezessete espécies de Eucalyptus, através do teste de microbiolização de sementes. A análise estatística dentre espécies mostrou que a virulência variou entre as estirpes estudadas. A virulência da R3bv2T foi significativamente maior em: urograndis, E. urophylla, E. grandis x E. camaldulensis, E. grandis, E. microcorys, E. deanei e E. phaeotricha; e maior para R1bv1 somente na espécie E. pellita. Entre espécies de eucalipto, observou-se maior suscetibilidade em "urograndis", E. grandis e E. paniculata para R3bv2T; e em E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Murcha bacteriana; Microbiolização de sementes; Suscetibilidade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001100005