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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
16/12/2008 |
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Data da última atualização: |
16/12/2008 |
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Autoria: |
LOEHRER, M.; LANGENBACH, C.; GOELLNER, K.; CONRATH, U.; SCHAFFRATH, U. |
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Título: |
Characterization of nonhost resistance of Arabidopsis to the asian soybean rust. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Molecular Plant-Microbe Interactions, v. 21, n. 11, p. 1421-1430, Nov. 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
Asian soybean rust (ASR), caused by Phakopsora pachyrhizi, is a devastating disease of soybean. We report the use of the nonhost plant Arabidopsis thaliana to identify the genetic basis of resistance to P. pachyrhizi. Upon attack by P. pachyrhizi, epidermal cells of wild-type Arabidopsis accumulated H2O2, which likely orchestrates the frequently observed epidermal cell death. However, even when epidermal cell death occurred, fungal hyphae grew on and infection was terminated at the mesophyll boundary. These events were associated with expression of PDF1.2, suggesting that P. pachyrhizi, an ostensible biotroph, mimics aspects of a necrotroph. Extensive colonization of the mesophyll occurred in Arabidopsis pen mutants with defective penetration resistance. Although haustoria were found occasionally in mesophyll cells, the successful establishment of biotrophy failed, as evidenced by the cessation of fungal growth. Double mutants affected in either jasmonic acid or salicylic acid signaling in the pen3-1 background revealed the involvement of both pathways in nonhost resistance (NHR) of Arabidopsis to P. pachyrhizi. Interestingly, expression of AtNHL10, a gene that is expressed in tissue undergoing the hypersensitive response, was only triggered in infected pen3-1 mutants. Thus, a suppression of P. pachyrhizi?derived effectors by PEN3 can be inferred. Our results demonstrate that Arabidopsis can be used to study mechanisms of NHR to ASR. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01954naa a2200169 a 4500
001 1471587
005 2008-12-16
008 2008 bl --- 0-- u #d
100 1 $aLOEHRER, M.
245 $aCharacterization of nonhost resistance of Arabidopsis to the asian soybean rust.
260 $c2008
520 $aAsian soybean rust (ASR), caused by Phakopsora pachyrhizi, is a devastating disease of soybean. We report the use of the nonhost plant Arabidopsis thaliana to identify the genetic basis of resistance to P. pachyrhizi. Upon attack by P. pachyrhizi, epidermal cells of wild-type Arabidopsis accumulated H2O2, which likely orchestrates the frequently observed epidermal cell death. However, even when epidermal cell death occurred, fungal hyphae grew on and infection was terminated at the mesophyll boundary. These events were associated with expression of PDF1.2, suggesting that P. pachyrhizi, an ostensible biotroph, mimics aspects of a necrotroph. Extensive colonization of the mesophyll occurred in Arabidopsis pen mutants with defective penetration resistance. Although haustoria were found occasionally in mesophyll cells, the successful establishment of biotrophy failed, as evidenced by the cessation of fungal growth. Double mutants affected in either jasmonic acid or salicylic acid signaling in the pen3-1 background revealed the involvement of both pathways in nonhost resistance (NHR) of Arabidopsis to P. pachyrhizi. Interestingly, expression of AtNHL10, a gene that is expressed in tissue undergoing the hypersensitive response, was only triggered in infected pen3-1 mutants. Thus, a suppression of P. pachyrhizi?derived effectors by PEN3 can be inferred. Our results demonstrate that Arabidopsis can be used to study mechanisms of NHR to ASR.
700 1 $aLANGENBACH, C.
700 1 $aGOELLNER, K.
700 1 $aCONRATH, U.
700 1 $aSCHAFFRATH, U.
773 $tMolecular Plant-Microbe Interactions$gv. 21, n. 11, p. 1421-1430, Nov. 2008.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
18/09/2006 |
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Data da última atualização: |
28/05/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CRUZ, J. C.; PEREIRA FILHO, I. A.; OLIVEIRA, M. F. de. |
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Afiliação: |
JOSE CARLOS CRUZ, CNPMS; ISRAEL ALEXANDRE PEREIRA FILHO, CNPMS; MAURILIO FERNANDES DE OLIVEIRA, CNPMS. |
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Título: |
Arranjo espacial de plantas em diferentes cultivares de milho. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 26.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 2.; SIMPÓSIO SOBRE COLLETOTRICHUM GRAMINICOLA, 1., 2006, Belo Horizonte. Inovação para sistemas integrados de produção: trabalhos apresentados. [Sete Lagoas]: ABMS, 2006. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Arranjo espacial; Índice de espigas. |
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Thesagro: |
Zea Mays. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29796/1/Arranjo-espacial.pdf
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Marc: |
LEADER 00753nam a2200169 a 4500
001 1490168
005 2018-05-28
008 2006 bl uuuu u00u1 u #d
100 1 $aCRUZ, J. C.
245 $aArranjo espacial de plantas em diferentes cultivares de milho.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 26.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 2.; SIMPÓSIO SOBRE COLLETOTRICHUM GRAMINICOLA, 1., 2006, Belo Horizonte. Inovação para sistemas integrados de produção: trabalhos apresentados. [Sete Lagoas]: ABMS$c2006
300 $c1 CD-ROM.
650 $aZea Mays
653 $aArranjo espacial
653 $aÍndice de espigas
700 1 $aPEREIRA FILHO, I. A.
700 1 $aOLIVEIRA, M. F. de
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Embrapa Milho e Sorgo (CNPMS) |
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