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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
28/11/1994 |
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Data da última atualização: |
17/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAGALHÃES, B. P.; HUMBER, R. A.; SHIELDS, E. J.; ROBERTS, D. W. |
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Afiliação: |
BONIFACIO PEIXOTO MAGALHAES, CNPAF. |
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Título: |
Effects of environment and nutrition on conidium germination and appressorium formation by Zoophthora radicans (Zygomycetes: entomophthorales): a pathogen of the potato leafhopper (Homoptera: cicadellidae). |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Environmental Entomology, v. 20, n. 5, p. 1460-1468, Oct. 1991. |
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DOI: |
10.1093/ee/20.5.1460 |
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Idioma: |
Inglês |
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Conteúdo: |
Conidium germination and differentiation of Zoophthora radicans on water agar were investigated to identify requirements for the production of appressoria, the structures needed for virulence. Appressorium formation was more sensitive to environmental and nutritional changes than was conidium germination. Temperature affected both formation of germ tubes and appressoria, and the best temperature-nutrient interaction was found for appressorium formation at 25-30°C and 1% yeast extract. At 15°C, conidium germination was depressed independent of the nutrient concentration, and appressoria did not form. The volume of liquid overlaying the conidia and the yeast extract concentration individually affected appressorium formation. The best interaction between the volume of liquid and yeast extract concentration was the combination of a large volume of liquid medium (3 ml/962 mm 2 surface area) and 1% yeast extract. Of the 12 nitrogen sources tested, the best for germination and appressorium formation were yeast extract and Bacto-Soytone. Glucose, maltose, and starch were the best of the 12 carbon sources tested. Increasing osmotic pressure caused by different concentrations of maltose and polyethylene glycol adversely affected formation of germ tubes and appressoria. Subculturing did not affect formation of germ tubes, but the frequency of appressorium formation decreased after 12 transfers. The best pH for appressorium formation was between 7.0 and 7.2. Z. radicans produced appressoria on cuticles of dead Empoasca fabae (Harris) nymphs at 25°C in the dark. MenosConidium germination and differentiation of Zoophthora radicans on water agar were investigated to identify requirements for the production of appressoria, the structures needed for virulence. Appressorium formation was more sensitive to environmental and nutritional changes than was conidium germination. Temperature affected both formation of germ tubes and appressoria, and the best temperature-nutrient interaction was found for appressorium formation at 25-30°C and 1% yeast extract. At 15°C, conidium germination was depressed independent of the nutrient concentration, and appressoria did not form. The volume of liquid overlaying the conidia and the yeast extract concentration individually affected appressorium formation. The best interaction between the volume of liquid and yeast extract concentration was the combination of a large volume of liquid medium (3 ml/962 mm 2 surface area) and 1% yeast extract. Of the 12 nitrogen sources tested, the best for germination and appressorium formation were yeast extract and Bacto-Soytone. Glucose, maltose, and starch were the best of the 12 carbon sources tested. Increasing osmotic pressure caused by different concentrations of maltose and polyethylene glycol adversely affected formation of germ tubes and appressoria. Subculturing did not affect formation of germ tubes, but the frequency of appressorium formation decreased after 12 transfers. The best pH for appressorium formation was between 7.0 and 7.2. Z. radicans produced appress... Mostrar Tudo |
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Palavras-Chave: |
Conidium; Grasshopper. |
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Thesagro: |
Conídio; Empoasca Fabae; Fungo; Gafanhoto; Germinação; Zoophthora Radicans. |
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Thesaurus Nal: |
Empoasca; Germination; Insect pathology; Insects. |
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Categoria do assunto: |
--
O Insetos e Entomologia |
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Marc: |
LEADER 02564naa a2200313 a 4500
001 1198110
005 2020-04-17
008 1991 bl uuuu u00u1 u #d
024 7 $a10.1093/ee/20.5.1460$2DOI
100 1 $aMAGALHÃES, B. P.
245 $aEffects of environment and nutrition on conidium germination and appressorium formation by Zoophthora radicans (Zygomycetes$bentomophthorales): a pathogen of the potato leafhopper (Homoptera: cicadellidae).$h[electronic resource]
260 $c1991
520 $aConidium germination and differentiation of Zoophthora radicans on water agar were investigated to identify requirements for the production of appressoria, the structures needed for virulence. Appressorium formation was more sensitive to environmental and nutritional changes than was conidium germination. Temperature affected both formation of germ tubes and appressoria, and the best temperature-nutrient interaction was found for appressorium formation at 25-30°C and 1% yeast extract. At 15°C, conidium germination was depressed independent of the nutrient concentration, and appressoria did not form. The volume of liquid overlaying the conidia and the yeast extract concentration individually affected appressorium formation. The best interaction between the volume of liquid and yeast extract concentration was the combination of a large volume of liquid medium (3 ml/962 mm 2 surface area) and 1% yeast extract. Of the 12 nitrogen sources tested, the best for germination and appressorium formation were yeast extract and Bacto-Soytone. Glucose, maltose, and starch were the best of the 12 carbon sources tested. Increasing osmotic pressure caused by different concentrations of maltose and polyethylene glycol adversely affected formation of germ tubes and appressoria. Subculturing did not affect formation of germ tubes, but the frequency of appressorium formation decreased after 12 transfers. The best pH for appressorium formation was between 7.0 and 7.2. Z. radicans produced appressoria on cuticles of dead Empoasca fabae (Harris) nymphs at 25°C in the dark.
650 $aEmpoasca
650 $aGermination
650 $aInsect pathology
650 $aInsects
650 $aConídio
650 $aEmpoasca Fabae
650 $aFungo
650 $aGafanhoto
650 $aGerminação
650 $aZoophthora Radicans
653 $aConidium
653 $aGrasshopper
700 1 $aHUMBER, R. A.
700 1 $aSHIELDS, E. J.
700 1 $aROBERTS, D. W.
773 $tEnvironmental Entomology$gv. 20, n. 5, p. 1460-1468, Oct. 1991.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| 2. |  | BARROS, V. C. Panorama de la vitivinicultura chilena en 2005. In: CONGRESSO LATINO-AMERICANO DE VITICULTURA E ENOLOGIA, 10.; CONGRESSO BRASILEIRO DE VITICULTURA E ENOLOGIA, 11.; SEMINÁRIO FRANCO-BRASILEIRO DE VITICULTURA E ENOLOGIA, 2., 2005, Bento Gonçalves. Anais... Bento Gonçalves: Embrapa Uva e Vinho, 2005. p. 187-194. Série Documentos, 55| Biblioteca(s): Embrapa Uva e Vinho. |
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| 8. | | CARNEIRO, J. M.; BARROS, V.; GIONGO, V.; FIGUEIREDO, M. C. B. de; MATSUURA, M. I. da S. F. Avaliação do ciclo de vida da manga brasileira. In: CONGRESSO BRASILEIRO SOBRE SOBRE GESTÃO DO CICLO DE VIDA, 6., 2018, Brasília, DF. Gestão da informação tecnológica para sustentabilidade: anais. Brasília, DF: IBICT, 2018. p. 378-384.| Tipo: Artigo em Anais de Congresso |
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| 9. | | SUSSEL, A. A. B.; ZACARONI, A. B.; GUIMARAES, T. G.; BARROS, V. D. M.; SANTOS, H. T. G. Análise temporal da verrugose do maracujazeiro em quatro variedades de maracujazeiro no Distrito Federal. Tropical Plant Pathology, Brasília, DF, v. 36, 2011. p. 1411 1 CD-ROM. Suplemento. Edição dos resumos do 44º Congresso Brasileiro de Fitopatologia, 2011, Bento Gonçalves.| Tipo: Resumo em Anais de Congresso |
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| 10. | | BARROS, V. V. F.; ROCHA, W. S. da; OLIVEIRA, D.; MARTINS, I. B. A.; ARES, G.; DELIZA, R. Consumers affective and emotional responses to yogurt across different socio-economic status. In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS , 12., 2017, Campinas. Ciência de Alimentos e seu Impacto no Mundo em Transformação. Campinas: UNICAMP, 2017. SLACA, 12. De 4 a 7 de Novembro de 2017. Ref. 71234.| Tipo: Resumo em Anais de Congresso |
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| 11. | | MAIA, R. C.; CARVALHO, B. R. de; BARROS, V. R. S. M. de; TAVERNARI, F. de C.; SORDI, C. Tecnologias disponíveis para o destino de resíduos das granjas de postura. In: CURSO DE ATUALIZAÇÃO EM AVICULTURA PARA POSTURA COMERCIAL, 11., 2014, Jaboticabal. Anais... Jaboticabal: Fundação de Apoio a Pesquisa, Ensino e Extensão, 2014. p. 29-38.| Tipo: Artigo em Anais de Congresso |
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| 12. | | SUSSEL, A. A. B.; ZACARONI, A.; GUIMARAES, T. G.; BARROS, V. D.; SANTOS, H. T.; SOUZA, A. C. Temporal analysis of scab on four passion fruit varieties on brasilian cerrado. Phytopathology, v. 101, n. 6, Supplement, p. S174, 2011. Trabalhos apresentados no: APS-IPPC 2011 Joint Meeting in Honolulu, Hawaii, August 6–10, 2011.| Tipo: Resumo em Anais de Congresso |
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| 13. | | IVERSSON, L. B.; SILVA, R. A. M. S.; ROSA, A. P. A. T. da; BARROS, V. L. R. S. Circulation of eastern equine encephalitis, western equine encephalitis, ilheus, maguari and tacaiuma viruses in equines of the brazilian Pantanal, South America. Revista do Instituto de Medicina Tropical, Sao Paulo, v.35, n.4, p.355-359, jul./ago., 1993.| Biblioteca(s): Embrapa Pantanal. |
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| 15. | | ROCHA, W. S. da; ALCANTARA, M. de; BARROS, V. V. F.; OLIVEIRA, D. C. R. de; DELIZA, R. Effect of CATA questions presentation order on sensory characterization of fruit smoothie by children and adolescents. In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS , 12., 2017, Campinas. Ciência de Alimentos e seu Impacto no Mundo em Transformação. Campinas: UNICAMP, 2017. SLACA, 12. De 4 a 7 de Novembro de 2017. Ref. 71751.| Tipo: Resumo em Anais de Congresso |
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| 17. | | BARROS, V. DA S.; SANTOS, T. DE L.; SILVA, E. de O.; SOUSA, J. A. de; FIGUEIREDO, M. C. B. de. Agronomic and environmental performance of melon produced in the Brazilian semiarid region. Revista Caatinga, Mossoró, v. 32, n. 4, p. 877-888, out./dez. 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| 18. | | COSTA, A. A. da S. X.; BARROS, V. A. M. de; NORONHA, R. L. F. de; LIMA FILHO, T.; MINIM, V. P. R. Como você se sente ao tomar este café? Um estudo sobre percepções, emoções e linguagem. Cadernos de Ciência & Tecnologia, v. 41, e27350, 2024. Título em inglês: How do you feel when drinking coffee? A study on perceptions, emotions and language.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 19. | | BARROS, V. R. S. M. de; MAIA, R. C.; FARIA, B. D.; BATISTA, L. da S.; TAVERNARI, F. de C.; ALBINO, L. F. T. Energia metabolizável de rações peletizadas e fareladas contendo diferentes níveis de glicerina para frangos de corte. In: SIMPÓSIO DE AVICULTURA DO NORDESTE, 2., 2014, João Pessoa. Anais... João Pessoa: Universidade Federal de Paraíba, 2014.| Tipo: Artigo em Anais de Congresso |
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| 20. | | FIGUEIREDO, M. C. B. de; POTTING, J.; SERRANO, L. A. L.; BEZERRA, M. A.; BARROS, V. da S.; GONDIM, R. S.; NEMECEK, T. Life cycle assessment of Brazilian cashew. In: INTERNATIONAL CONFERENCE ON LIFE CYCLE ASSESSMENT IN THE AGRI-FOOD SECTOR, 9., 2014, San Francisco. Proceedings... Vashon: ACLCA, 2014. p. 395-404. Editado por Rita Schenck e Douglas Hiuzenga.| Tipo: Artigo em Anais de Congresso |
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| Registros recuperados : 72 | |
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