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| Registros recuperados: 55 | |
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| MELLO, R. N.; MORAIS JUNIOR, O. P.; ABREU, A. G.; BORBA, T. C. O.. |
| Rice germplasm banks have many promising sources of resistance to pathogens. However, identification of resistant genotypes is often arduous, notably when the host-pathogen relationship is complex as in rice blast. In addition, selection of representative Magnaporthe oryzae isolates to adequately identify sources of broad-spectrum resistance is challenging. To overcome these obstacles, data from pathogenicity assays were analyzed as a factorial design, where the pairwise combination comprised rice genotypes and blast isolates. Using this methodology, we aimed to access information about host resistance. |
| Tipo: Parte de livro |
Palavras-chave: Arroz; Oryza sativa; Brusone; Doença de planta; Resistência; Blast disease; Bayesian theory; Magnaporthe oryzae. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058998 |
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| TORRES, G. A. M.; CONSOLI, L.; GONZÁLES, H. H. S.; BINNECK, E.; DIANESE, A. de C.; SEIXAS, C. D. S.; GOULART, A. C. P.; SANTANA, F. M.; WEBBER, N. F.; COELHO, M. A. O.; SCAGLIUSI, S. M. M.; NHANI JUNIOR, A.; BONATO, A. L. V.; NICOLAU, M.; BONOW, S.. |
| Tipo: Separatas |
Palavras-chave: Brusone; Pyricularia Oryzae; Resistência Genética; Pyricularia; Wheat; Magnaporthe oryzae. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101594 |
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| TORRES, G. A. M.; CONSOLI, L.; GONZÁLES, H. H. S.; BINNECK, E.; DIANESE, A. de C.; SEIXAS, C. D. S.; GOULART, A. C. P.; SANTANA, F. M.; WEBBER, N. F.; COELHO, M. A. O.; SCAGLIUSI, S. M. M.; NHANI JUNIOR, A.; BONATO, A. L. V.; NICOLAU, M.; BONOW, S.. |
| Tipo: Separatas |
Palavras-chave: Brusone; Pyricularia Oryzae; Resistência Genética; Pyricularia; Wheat; Magnaporthe oryzae. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101661 |
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| CORTES, M. V. C. B.; LIMA, D. C. S.; SILVA-LOBO, V. L.; FILIPPI, M. C. C.; PRABHU, A. S.; GONÇALVES, F. J.. |
| Com o objetivo de caracterizar parcialmente o filtrado da cultura de Sarocladium oryzae responsável pelo antagonismo de M. oryzae, o isolado CNPAF So 20G de S. oryzae foi inoculado em meio de cultura líquido (3% de glicerol, 1% de glicose, 0,5% de peptona e 0,2% de NaCl) e incubado por quatro dias à 30oC. |
| Tipo: Parte de livro |
Palavras-chave: Arroz; Oryza sativa; Doença de planta; Brusone; Magnaporthe oryzae; Sarocladium oryzae.. |
| Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/918095 |
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| MARTINS, B. E. de M.; CHAIBUB, A. A.; CÔRTES, M. V. de C. B.; LOBO, V. L. da S.; FILIPPI, M. C. C. de. |
| Rice blast (Magnaporthe oryzae) limits rice (Oryza sativa) grain yields worldwide. The objective of this investigation was to morphologically, biochemically, and molecularly characterize six bacterial isolates, BRM 32109, BRM 32110, BRM 32111, BRM 32112, BRM 32113, and BRM 32114, and to determine their potential as antagonists to M. oryzae. Morphological characterization was based on colony formation and color, Gram staining, and fluorescent pigment production. Biochemical studies were based on cellulase, chitinase, phosphatase, indoleacetic acid, and siderophore production, as well as biofilm formation. The molecular identification used specific primers for PCR amplification of the 16S rRNA region, followed by sequencing. The antagonism studies involved... |
| Tipo: Artigo de periódico |
Palavras-chave: Bacterial isolates; Arroz; Oryza Sativa; Controle Biológico; Brusone; Doença de Planta; Antagonismo; Pyricularia Oryzae; Rice; Biological control; Drug antagonism; Magnaporthe oryzae. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126355 |
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| Reis,Karinna Bannach; Côrtes,Marcio Vinicius de Carvalho Barros; Martins,Frederico Severino; Filippi,Marta Cristina Corsi de; Paula,José Realino de; Conceição,Edemilson Cardoso da. |
| Abstract: The objective of this work was to purify and standardize the rue (Ruta graveolens) extract and evaluate its effect on Magnaporthe oryzae as an alternative to the integrated management of rice blast. The drug was characterized, the liquid extract was obtained, and the methodology for quantifying the standard markers psoralen and bergapten was validated. Rue extract and the markers, solely or in combination, were assayed in vitro, as well as in greenhouse conditions, for their ability to suppress leaf blast, by the evaluation of mycelial growth, conidial germination, and appressorium formation. Rue extract inhibited M. oryzae mycelial growth (100%), conidial germination (LD50=0.237 mg), and the appressorium formation (LD50=0.121 mg); besides, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Magnaporthe oryzae; Ruta graveolens; Bergapten; Psoralen. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001201121 |
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| Araujo,Leonardo; Soares,Juliana Moreira; Filippi,Marta Cristina Corsi de; Rodrigues,Fabrício Ávila. |
| ABSTRACT Blast, caused by the fungus Pyricularia oryzae, is an important disease affecting rice and wheat yield worldwide. This study investigated the cytological aspects of incompatible (non-host resistance) and compatible (host resistance) rice- (R_Po) and wheat- (W_Po) Pyricularia oryzae isolate interactions. Inoculations of rice and wheat with the R_Po and W_Po isolates of P. oryzae, respectively, were expected to be compatible interactions (host resistance), whereas inoculations of rice and wheat with the W_Po and R_Po isolates of P. oryzae, respectively, were considered to be incompatible interactions (non-host resistance). For the compatible interactions (rice-R_Po and wheat-W_Po), fungal hyphae penetrated and colonized the epidermal cells and also... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Magnaporthe oryzae; Oryza sativa; Triticum aestivum L; Blast disease; Host resistance. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200177 |
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| GODDARD, R.; STEED, A.; CHINOY, C.; FERREIRA, J. R.; SCHEEREN, P. L.; MACIEL, J. L. N.; CAIERAO, E.; TORRES, G. A. M.; CONSOLI, L.; SANTANA, F. M.; FERNANDES, J. M. C.; SIMMONDS, J.; UAUY, C.; COCKRAM, J.; NICHOLSON, P.. |
| Background: Wheat blast, caused by Magnaporthe oryzae Triticum (MoT) pathotype, is a global threat to wheat (Triticum aestivum L.) production. Few blast resistance (R) genes have been identified to date, therefore assessing potential sources of resistance in wheat is important. The Brazilian wheat cultivar BR 18-Terena is considered one of the best sources of resistance to blast and has been widely used in Brazilian breeding programmes, however the underlying genetics of this resistance are unknown. Results: BR 18-Terena was used as the common parent in the development of two recombinant inbred line (RIL) F6 populations with the Brazilian cultivars Anahuac 75 and BRS 179. Populations were phenotyped for resistance at the seedling and heading stage using... |
| Tipo: Artigo de periódico |
Palavras-chave: Wheat blast; Seedling resistance; Head resistance; Single nucleotide polymorphism (SNP) genotyping; Triticum Aestivum; Magnaporthe oryzae; Quantitative trait loci; Genotyping. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124870 |
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| Santos, Gil Rodrigues dos; Universidade Federal do Tocantins.; Castro Neto, Manoel Delintro de; Universidade Federal do Tocantins; Ramos, Leandro Nogueira; Universidade de Brasília; Sarmento, Renato Almeida; Universidade Federal do Tocantins; Korndörfer, Gaspar Henrique; Universidade Federal de Uberlândia; Ignácio, Maíra; Universidade Federal do Tocantins. |
| The intensity of rice diseases in regions with poor levels of silicates (Si) in the soil, together with high control costs, can make the cultivation of rice unfeasible. Surprisingly, there are scarce research data available regarding the influence of Si on rice diseases in tropical lowland regions. Therefore, the aim of this study is to determine the effect of three silicon sources on rice yield and disease management. Three experiments were carried out from December 2005 to April 2006 at an experimental field area located in Formoso do Araguaia, Tocantins state, Brazil. Each experiment consisted of one silicon source (powder, granular or liquid) and the treatments consisted of six Si doses. All the treatments were performed in a completely randomized... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.02.00-1 Oryza sativa; Bipolaris oryzae; Magnaporthe oryzae; Silicate Fitossanidade Oryza sativa; Bipolaris oryzae; Magnaporthe oryzae; Silicate. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6573 |
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| SANTANA, F. M.; LAU, D.; SBALCHEIRO, C. C.; GOUSSAIN, R. de C. S.; VENANCIO, W. S.; CUSTÓDIO, A. A. de P.; MOREIRA, L. S. de O.; SUSSEL, A. A. B.. |
| A brusone do trigo, causada pelo fungo Pyricularia oryzae Cavara [teleomorfo: Magnaporthe oryzae (T.T. Hebert) M.E. Barr], pode infectar todos os órgãos aéreos da planta, incluindo folhas, colmos e espigas. A forma mais destrutiva da doença ocorre quando incidem infecções precoces do fungo na espiga, podendo afetar parcial ou totalmente a ráquis. As espigas infectadas apresentam branqueamento e produzem grãos ?chochos?, deformados, pequenos e com baixo peso específico, ocasionando redução do rendimento final e da qualidade de grãos, levando a perdas significativas nas lavouras. É uma doença de grande importância econômica e constitui-se num dos principais entraves à expansão da triticultura no Brasil Central (Prestes et al., 2007; Torres et al., 2015). |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Pyricularia oryzae Cavara; Fungicida; Fungo; Brusone; Trigo; Espiga; Grão; Magnaporthe oryzae. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124187 |
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| Registros recuperados: 55 | |
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