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Effects of methanol extracts from Ophiopogon japonicus on rice blast fungus International Rice Research Institute
Lin, D.; Tsuzuki, E.; Sugimoto, Y.; Matsuo, M..
p.27-28
Palavras-chave: Plant pathogenic fungi; Plant pathogens; Plant extracts; Mycelium; Ophiopogon japonicus; Fungicidal properties; Application rates.
Ano: 2003 URL: http://hdl.handle.net/123456789/1197
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Volatiles produced by interacting microorganisms potentially useful for the control of plant pathogens Ciência e Agrotecnologia
Campos,Vicente Paulo; Pinho,Renata Silva Canuto de; Freire,Eduardo Souza.
The results of studies about interactions between microorganisms involving at least one plant pathogen are of interest to the areas of ethiology and control in Plant Pathology. Various aspects of these interactions have been studied over the years but the toxicity of volatile organic compounds (VOCs) has been emphasized only recently, developing techniques and procedures, and producing additional knowledge to those already obtained with water-soluble substances. This new facet of these interactions based on VOCs is discussed in this review involving mainly fungi, bacteria and nematodes pathogenic to plants. Also discussed is the role of VOCs produced by microorganisms, especially fungi and bacteria, in soil fungistasis and the effect of VOCs on fungal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Volatiles; Plant pathogens; Interaction.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000300001
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In vitro sensitivity of antagonistic Trichoderma atroviride to herbicides BABT
Santoro,Patricia Helena; Cavaguchi,Silvia Akimi; Alexandre,Talita Moretto; Zorzetti,Janaina; Neves,Pedro Manuel Oliveira Janeiro.
Trichoderma atroviride was tested in vitro for its sensitivity to different herbicides. The dosages tested were recommended dosage (RD), half dosage (½RD), and double dosage (2RD). Germination, colony-forming units (CFU), radial growth, and spore production were evaluated. Carfentrazone-ethyl and sulfentrazone inhibited the germination at RD and 2RD. A reduction in the CFU was observed for glufosinate-ammonium, atrazine, carfentrazone-ethyl, diuron + paraquat dichloride, imazapyr, oxyfluorfen, and sulfentrazone at each of the tested dosages. Radial growth was influenced by ametryn, atrazine, carfentrazone-ethyl, oxyfluorfen, and sulfentrazone herbicides, with an 80% reduction of the colonial area. Spore production was affected by carfentrazone-ethyl,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Compatibility; Conservative management; Antagonistic microorganisms; Plant pathogens.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200012
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Stripe smuts of grasses: one lineage or high levels of polyphyly? Naturalis
Savchenko, K.G.; Carris, L.M.; Castlebury, L.A.; Heluta, V.P.; Wasser, S.P.; Nevo, E..
Stripe smut of grasses, Ustilago striiformis s.l., is a complex of smut fungi widely distributed over temperate and subtropical regions. The disease results in the shredding and death of leaf tissue following the rupture of elongated sori. Nearly 100 different grass species in more than 30 genera are infected by stripe smut. During the last two centuries more than 30 smut taxa have been described from members of this complex. The present study attempts to clarify the taxonomy and phylogeny of stripe smuts on grasses by analysing both morphological and molecular data. More than 200 specimens from different continents and host plants were examined. DNA was extracted from teliospores of 23 specimens from different hosts collected in Europe, Asia, and North...
Tipo: Article / Letter to the editor Palavras-chave: Fungi; ITS; LSU; Phylogeny; Plant pathogens; Ustilaginaceae.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/531715
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Soft computing model on genetic diversity and pathotype differentiation of pathogens: A novel approach Electron. J. Biotechnol.
Gürüler,Hüseyin; Peker,Musa; Baysal,Ömür.
Background Identifying and validating biomarkers' scores of polymorphic bands are important for studies related to the molecular diversity of pathogens. Although these validations provide more relevant results, the experiments are very complex and time-consuming. Besides rapid identification of plant pathogens causing disease, assessing genetic diversity and pathotype formation using automated soft computing methods are advantageous in terms of following genetic variation of pathogens on plants. In the present study, artificial neural network (ANN) as a soft computing method was applied to classify plant pathogen types and fungicide susceptibilities using the presence/absence of certain sequence markers as predictive features. Results A plant pathogen,...
Tipo: Journal article Palavras-chave: Computational biology; Genetic diversity; Molecular markers; Plant pathogens; Predictive information; Soft computing.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500004
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Fungal endophytes of Panicum maximum and Pennisetum purpureum: isolation, identification, and determination of antifungal potential R. Bras. Zootec.
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: 6
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