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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Unidades Centrais. |
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Data corrente: |
20/03/2008 |
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Data da última atualização: |
20/10/2009 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
FRAGOSO, R. da R.; LOURENÇO, I. T.; VIANA, A. A. B.; SOUZA, D. dos S. de L.; ANDRADE, R. V. de; MEHTA, A.; BRASILEIRO, A. C. M.; PINTO, E. R. de C.; LIMA, L. M. de; ROCHA, T L.; SA, M. F. G. de. |
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Afiliação: |
Rodrigo da Rocha Fragoso, CPAC; Antônio Américo Barbosa Viana; Isabela Tritan Lourenço; Djair dos Santos de Lima Souza; Liziane Maria de Lima; Angela Mehta; Rosângela Vieira de Andrade; Ana Cristina Miranda Brasileiro; Eduardo Romano de Campos Pinto; Thales Lima Rocha; Maria de Fátima Grossi de Sá. |
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Título: |
Interação molecular planta-nematóide. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2007. |
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Páginas: |
56 p. |
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Série: |
(Embrapa Cerrados. Documentos, 198). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: The endoparasitic sedentary phytonematodes of genera Heterodera, Globodera (known as cyst nematodes, CN) and Meloidogyne (the root-knot nematodes, RKN) are major crop phytopathogens, causing estimated losses of US$ 125 billion annually in the world. These plant-parasitic nematodes share some parasitism mechanisms, which ensure host-tissue invasion and host-defense evasion. The establishment and maintenance of the sophisticated molecular plant-nematode interaction are based upon several secreted molecules that access plant cellular processes, transforming them in enlarged, multinucleate, and metabolically active feeding cells. Nematicides applications are usually expensive, inefficient and environmentally hazardous. Crop rotation, bio-control agents and/or host resistance have not been successfully deployed against nematodes, except in some rare cases. Considering all limitations of nematode control, considerable attention have been given to the study of the molecular plant-nematode interaction, to obtain a comprehensive understanding of this patosystem, and to generate efficient alternatives to nematode control. The cultivation of resistant plants is the best control against nematodes, but this strategy is dependent on the existence and mapping of natural resistance genes, witch trigger hypersensitive response, for subsequent genetic breeding, limited to plants evolutively closely related. Other resistance mechanism observed is the production and accumulation of secondary metabolites with antimicrobial, nematicide and insecticide activities. Hundreds of plant genes that are differently expressed during nematode parasitism are already characterized, shading light on this patosystem at a molecular level. Despite several techniques that have been used for the study of plant-pathogen interaction, recent researches with inhibition of nematode gene expression, using RNA interference, have demonstrate the enormous potential of transgenic plants resistant to phytonematodes. MenosABSTRACT: The endoparasitic sedentary phytonematodes of genera Heterodera, Globodera (known as cyst nematodes, CN) and Meloidogyne (the root-knot nematodes, RKN) are major crop phytopathogens, causing estimated losses of US$ 125 billion annually in the world. These plant-parasitic nematodes share some parasitism mechanisms, which ensure host-tissue invasion and host-defense evasion. The establishment and maintenance of the sophisticated molecular plant-nematode interaction are based upon several secreted molecules that access plant cellular processes, transforming them in enlarged, multinucleate, and metabolically active feeding cells. Nematicides applications are usually expensive, inefficient and environmentally hazardous. Crop rotation, bio-control agents and/or host resistance have not been successfully deployed against nematodes, except in some rare cases. Considering all limitations of nematode control, considerable attention have been given to the study of the molecular plant-nematode interaction, to obtain a comprehensive understanding of this patosystem, and to generate efficient alternatives to nematode control. The cultivation of resistant plants is the best control against nematodes, but this strategy is dependent on the existence and mapping of natural resistance genes, witch trigger hypersensitive response, for subsequent genetic breeding, limited to plants evolutively closely related. Other resistance mechanism observed is the production and accumulation of se... Mostrar Tudo |
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Palavras-Chave: |
Controle; Pests of plants. |
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Thesagro: |
Genética Vegetal; Nematóide; Praga de Planta; Resistência Genética. |
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Thesaurus Nal: |
genetic resistance; genetics; Nematoda. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/28619/1/doc_198.pdf
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Marc: |
LEADER 02971nam a2200361 a 4500
001 1571936
005 2009-10-20
008 2007 bl uuuu 00u1 u #d
100 1 $aFRAGOSO, R. da R.
245 $aInteração molecular planta-nematóide.
260 $aPlanaltina, DF: Embrapa Cerrados$c2007
300 $a56 p.
490 $a(Embrapa Cerrados. Documentos, 198).
520 $aABSTRACT: The endoparasitic sedentary phytonematodes of genera Heterodera, Globodera (known as cyst nematodes, CN) and Meloidogyne (the root-knot nematodes, RKN) are major crop phytopathogens, causing estimated losses of US$ 125 billion annually in the world. These plant-parasitic nematodes share some parasitism mechanisms, which ensure host-tissue invasion and host-defense evasion. The establishment and maintenance of the sophisticated molecular plant-nematode interaction are based upon several secreted molecules that access plant cellular processes, transforming them in enlarged, multinucleate, and metabolically active feeding cells. Nematicides applications are usually expensive, inefficient and environmentally hazardous. Crop rotation, bio-control agents and/or host resistance have not been successfully deployed against nematodes, except in some rare cases. Considering all limitations of nematode control, considerable attention have been given to the study of the molecular plant-nematode interaction, to obtain a comprehensive understanding of this patosystem, and to generate efficient alternatives to nematode control. The cultivation of resistant plants is the best control against nematodes, but this strategy is dependent on the existence and mapping of natural resistance genes, witch trigger hypersensitive response, for subsequent genetic breeding, limited to plants evolutively closely related. Other resistance mechanism observed is the production and accumulation of secondary metabolites with antimicrobial, nematicide and insecticide activities. Hundreds of plant genes that are differently expressed during nematode parasitism are already characterized, shading light on this patosystem at a molecular level. Despite several techniques that have been used for the study of plant-pathogen interaction, recent researches with inhibition of nematode gene expression, using RNA interference, have demonstrate the enormous potential of transgenic plants resistant to phytonematodes.
650 $agenetic resistance
650 $agenetics
650 $aNematoda
650 $aGenética Vegetal
650 $aNematóide
650 $aPraga de Planta
650 $aResistência Genética
653 $aControle
653 $aPests of plants
700 1 $aLOURENÇO, I. T.
700 1 $aVIANA, A. A. B.
700 1 $aSOUZA, D. dos S. de L.
700 1 $aANDRADE, R. V. de
700 1 $aMEHTA, A.
700 1 $aBRASILEIRO, A. C. M.
700 1 $aPINTO, E. R. de C.
700 1 $aLIMA, L. M. de
700 1 $aROCHA, T L.
700 1 $aSA, M. F. G. de
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Registro original: |
Embrapa Cerrados (CPAC) |
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| 1. |  | FRAGOSO, R. da R.; LOURENÇO, I. T.; VIANA, A. A. B.; SOUZA, D. dos S. de L.; ANDRADE, R. V. de; MEHTA, A.; BRASILEIRO, A. C. M.; PINTO, E. R. de C.; LIMA, L. M. de; ROCHA, T L.; SA, M. F. G. de. Interação molecular planta-nematóide. Planaltina, DF: Embrapa Cerrados, 2007. 56 p. (Embrapa Cerrados. Documentos, 198).| Biblioteca(s): Embrapa Cerrados. |
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