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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
04/05/2016 |
Data da última atualização: |
05/05/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ARAUJO, L.; SOARES, J. M.; FILIPPI, M. C. C. de; RODRIGUES, F. A. |
Afiliação: |
LEONARDO ARAUJO, UFV; JULIANA MOREIRA SOARES, UFV; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; FABRÍCIO ÁVILA RODRIGUES, UFV. |
Título: |
Cytological aspects of incompatible and compatible interactions between rice, wheat and the blast pathogen Pyricularia oryzae. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 73, n. 2, p. 177-183, mar./abr. 2016. |
DOI: |
10.1590/0103-9016-2015-0169 |
Idioma: |
Inglês |
Conteúdo: |
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 invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for the wheat- R_Po interaction, where no symptoms of necrosis were exhibited. However, the opposite was observed for the compatible interactions. The present study presents cytological features associated with incompatible and compatible rice- and wheat-P. oryzae interactions that may be useful to studies involving variability, coevolution, diagnosis, and regulation of quarantine or even in a rice or wheat breeding program whose aim is to transfer genes involved in non-host resistance to host resistance due to similarities in downstream mechanisms. MenosBlast, 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 invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for t... Mostrar Tudo |
Palavras-Chave: |
Host resistance. |
Thesagro: |
Arroz; Brusone; Doença de planta; Oryza sativa; Trigo; Triticum aestivum. |
Thesaurus Nal: |
Blast disease; Magnaporthe oryzae. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142771/1/CNPAF-2016-sa.pdf
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Marc: |
LEADER 02878naa a2200277 a 4500 001 2044441 005 2020-05-05 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1590/0103-9016-2015-0169$2DOI 100 1 $aARAUJO, L. 245 $aCytological aspects of incompatible and compatible interactions between rice, wheat and the blast pathogen Pyricularia oryzae. 260 $c2016 520 $aBlast, 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 invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for the wheat- R_Po interaction, where no symptoms of necrosis were exhibited. However, the opposite was observed for the compatible interactions. The present study presents cytological features associated with incompatible and compatible rice- and wheat-P. oryzae interactions that may be useful to studies involving variability, coevolution, diagnosis, and regulation of quarantine or even in a rice or wheat breeding program whose aim is to transfer genes involved in non-host resistance to host resistance due to similarities in downstream mechanisms. 650 $aBlast disease 650 $aMagnaporthe oryzae 650 $aArroz 650 $aBrusone 650 $aDoença de planta 650 $aOryza sativa 650 $aTrigo 650 $aTriticum aestivum 653 $aHost resistance 700 1 $aSOARES, J. M. 700 1 $aFILIPPI, M. C. C. de 700 1 $aRODRIGUES, F. A. 773 $tScientia Agricola, Piracicaba$gv. 73, n. 2, p. 177-183, mar./abr. 2016.
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Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
21/01/2009 |
Data da última atualização: |
22/01/2009 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
VIEGAS, M. P.; SILVA, C. L. S. P.; CIAMPI, A. Y.; AZEVEDO, V. C. R.; SEBBENN, A. M.; FREITAS, M. L. M.; MORAES, M. L. T. de. |
Afiliação: |
Michele Perez Viegas, UNESP; Cristina Lacerda Soares Petrarolha Silva; Ana Yamaguishi Ciampi, Embrapa Recursos Genéticos e Biotecnologia; Vânia Cristina Renno Azevedo, Embrapa Recursos Genéticos e Biotecnologia; Alexandre Magno Sebbenn, Instituto Florestal de São Paulo; Miguel Luiz Menezes Freitas, Instituto Florestal de São Paulo; Mario Luiz Teixeira de Moraes, UNESP. |
Título: |
Diversidade genética e endogamia em população de Myracrodruon urundeuva Fr. All. ocorrente em Aramina-SP. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: Fundação de Apoio à Pesquisa Científica e Tecnológica - FUNCREDI, 2008. |
Páginas: |
p.201. |
Idioma: |
Português |
Palavras-Chave: |
Aramina; Microssatélite. |
Thesagro: |
Aroeira; Conservação; Endogamia; Myracrodruon Urundeuva. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00932naa a2200265 a 4500 001 1190499 005 2009-01-22 008 2008 bl uuuu u00u1 u #d 100 1 $aVIEGAS, M. P. 245 $aDiversidade genética e endogamia em população de Myracrodruon urundeuva Fr. All. ocorrente em Aramina-SP. 260 $c2008 300 $ap.201. 650 $aAroeira 650 $aConservação 650 $aEndogamia 650 $aMyracrodruon Urundeuva 653 $aAramina 653 $aMicrossatélite 700 1 $aSILVA, C. L. S. P. 700 1 $aCIAMPI, A. Y. 700 1 $aAZEVEDO, V. C. R. 700 1 $aSEBBENN, A. M. 700 1 $aFREITAS, M. L. M. 700 1 $aMORAES, M. L. T. de 773 $tIn: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: Fundação de Apoio à Pesquisa Científica e Tecnológica - FUNCREDI, 2008.
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