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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Amapá; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
12/09/2012 |
Data da última atualização: |
10/11/2016 |
Tipo da produção científica: |
Documentos |
Autoria: |
SAGGIN JUNIOR, O. J.; BORGES, W. L.; NOVAIS, C. B. de; SILVA, E. M. R. da. |
Afiliação: |
ORIVALDO JOSE SAGGIN JUNIOR, CNPAB; WARDSSON LUSTRINO BORGES, CPAF-AP; CÂNDIDO BARRETO DE NOVAIS, UFLA; ELIANE MARIA RIBEIRO DA SILVA, CNPAB. |
Título: |
Manual de curadores de germoplasma - micro-organismos: fungos micorrízicos arbusculares. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2011. |
Páginas: |
23 p. |
Série: |
(Embrapa Recursos Genéticos e Biotecnologia. Documentos, 334; Embrapa Agrobiologia. Documentos, 290; Embrapa Amapá. Documentos, 76). |
Idioma: |
Português |
Palavras-Chave: |
Fungos micorrízicos arbusculares. |
Thesagro: |
Conservação; Microrganismo; Recurso genético. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/149774/1/doc334-290-76.pdf
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Marc: |
LEADER 00784nam a2200205 a 4500 001 1933491 005 2016-11-10 008 2011 bl uuuu u0uu1 u #d 100 1 $aSAGGIN JUNIOR, O. J. 245 $aManual de curadores de germoplasma - micro-organismos$bfungos micorrízicos arbusculares.$h[electronic resource] 260 $aBrasília, DF: Embrapa Recursos Genéticos e Biotecnologia$c2011 300 $a23 p. 490 $a(Embrapa Recursos Genéticos e Biotecnologia. Documentos, 334; Embrapa Agrobiologia. Documentos, 290; Embrapa Amapá. Documentos, 76). 650 $aConservação 650 $aMicrorganismo 650 $aRecurso genético 653 $aFungos micorrízicos arbusculares 700 1 $aBORGES, W. L. 700 1 $aNOVAIS, C. B. de 700 1 $aSILVA, E. M. R. da
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
15/07/1998 |
Data da última atualização: |
15/07/1998 |
Autoria: |
SIQUEIRA, J. O.; HUBBEL, D. H.; VALLE, R. R. |
Título: |
Effects of phosphorus on formation of the vesicular-arbuscular mycorrhizal symbiosis. |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.19, n.12, p. 1465-1474. dez. 1984. |
Idioma: |
Inglês |
Conteúdo: |
The effect of phosphorus (P) on formation of the vesicular-arbuscular mycorrhizal (VAM) symbiosis was examined. Using a sand-hydroponic culture chamber, increasing P levels were supplied to soybean (Glycine max L. Merril) seedlings. It was found that indirect supply of P up to 600 mM did not affect the germination of Glomus mosseae chlamydospores in the rhizosphere. Similar results were found for germination of either G. mosseae or Gigaspora margarita spores in the rhizosphere of soybean growing in soil amended with increasing P levels. These data suggest that P controls VAM formation at some stage after spore germination in the rhizosphere has occurred. Increasing P supply to the soil enhanced carbon exchange rate, sugar content of the roots and decreased sugars in the root exudates. Bioassays using root extracts from plants supplied with different P levels showed differential effects on germination of G. mosseae and G. margarita spores in vitro. Extracts from plants well supplied with P had high levels of sugars and inhibited spore germination. It was proposed that P controls root colonization through its effect on host carbon metabolism. In addition, the relationship between P availability and plant growth response to mycorrhizal formation is discussed. |
Palavras-Chave: |
Formacao de micorrizas; Fungos endomicorrizicos; Germinacao de esporos; Mycorrhizal formation; VAM fungi. |
Thesaurus NAL: |
spore germination. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01941naa a2200217 a 4500 001 1104857 005 1998-07-15 008 1984 bl uuuu u00u1 u #d 100 1 $aSIQUEIRA, J. O. 245 $aEffects of phosphorus on formation of the vesicular-arbuscular mycorrhizal symbiosis. 260 $c1984 520 $aThe effect of phosphorus (P) on formation of the vesicular-arbuscular mycorrhizal (VAM) symbiosis was examined. Using a sand-hydroponic culture chamber, increasing P levels were supplied to soybean (Glycine max L. Merril) seedlings. It was found that indirect supply of P up to 600 mM did not affect the germination of Glomus mosseae chlamydospores in the rhizosphere. Similar results were found for germination of either G. mosseae or Gigaspora margarita spores in the rhizosphere of soybean growing in soil amended with increasing P levels. These data suggest that P controls VAM formation at some stage after spore germination in the rhizosphere has occurred. Increasing P supply to the soil enhanced carbon exchange rate, sugar content of the roots and decreased sugars in the root exudates. Bioassays using root extracts from plants supplied with different P levels showed differential effects on germination of G. mosseae and G. margarita spores in vitro. Extracts from plants well supplied with P had high levels of sugars and inhibited spore germination. It was proposed that P controls root colonization through its effect on host carbon metabolism. In addition, the relationship between P availability and plant growth response to mycorrhizal formation is discussed. 650 $aspore germination 653 $aFormacao de micorrizas 653 $aFungos endomicorrizicos 653 $aGerminacao de esporos 653 $aMycorrhizal formation 653 $aVAM fungi 700 1 $aHUBBEL, D. H. 700 1 $aVALLE, R. R. 773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.19, n.12, p. 1465-1474. dez. 1984.
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