| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
25/06/1991 |
|
Data da última atualização: |
20/01/2025 |
|
Autoria: |
KOIDE, R. T.; LI, M. G. |
|
Título: |
Mycorrhizal fungi and nutrient ecology of oldfield annual plant species. |
|
Ano de publicação: |
1991 |
|
Fonte/Imprenta: |
Oecologia, v. 85, n. 3, p. 403-412, 1991. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Three oldfield annual species (Abutilon theophrasti Medic., Ambrosia arternisiifolia L. and Setaria lutescens (Weigel) Hubb.) were investigated. All three developed substantial mycorrhizal infections when inoculated with Glomus etunicatum Becker & Gerd. Mycorrhizal infection dramatically increased phosphorus content and dry weight of both Abutilon and Ambrosia, but did not significantly affect dry weight and only modestly increased phosphorus content of Setaria. These results were consistent with a lower level of infection and much greater root density in Setaria than in the other species. When Abutilon was grown in the presence of Setaria, mycorrhizal infection had no effect on Abutilon phosphorus content or dry weight. The depressive effect of Setaria on the response to inoculation in Abutilon was probably not caused by water soluble allelopathic chemicals from Setaria roots, but soil leachate from Abutilon plants did inhibit infection in other Abutilon plants. The data were consistent with the hypothesis that the very high root density and effective soil exploitation of Setaria reduced the benefit from mycorrhizal infection in Abutilon via phosphorus depletion in a large proportion of the available soil volume. Furthermore, even if mycorrhizal infection were capable of increasing phosphorus content of Abutilon in the presence of Setaria, the very high competitive ability of Setaria for nitrogen in the soil could have reduced the benefit of an enhanced phosphorus content. Carbon isotope ratios were reduced in Abutilon by mycorrhizal infection, indicating a possible reduction in water use efficiency. MenosThree oldfield annual species (Abutilon theophrasti Medic., Ambrosia arternisiifolia L. and Setaria lutescens (Weigel) Hubb.) were investigated. All three developed substantial mycorrhizal infections when inoculated with Glomus etunicatum Becker & Gerd. Mycorrhizal infection dramatically increased phosphorus content and dry weight of both Abutilon and Ambrosia, but did not significantly affect dry weight and only modestly increased phosphorus content of Setaria. These results were consistent with a lower level of infection and much greater root density in Setaria than in the other species. When Abutilon was grown in the presence of Setaria, mycorrhizal infection had no effect on Abutilon phosphorus content or dry weight. The depressive effect of Setaria on the response to inoculation in Abutilon was probably not caused by water soluble allelopathic chemicals from Setaria roots, but soil leachate from Abutilon plants did inhibit infection in other Abutilon plants. The data were consistent with the hypothesis that the very high root density and effective soil exploitation of Setaria reduced the benefit from mycorrhizal infection in Abutilon via phosphorus depletion in a large proportion of the available soil volume. Furthermore, even if mycorrhizal infection were capable of increasing phosphorus content of Abutilon in the presence of Setaria, the very high competitive ability of Setaria for nitrogen in the soil could have reduced the benefit of an enhanced phosphorus content. ... Mostrar Tudo |
|
Thesagro: |
Micorriza. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02039naa a2200145 a 4500
001 1279548
005 2025-01-20
008 1991 bl uuuu u00u1 u #d
100 1 $aKOIDE, R. T.
245 $aMycorrhizal fungi and nutrient ecology of oldfield annual plant species.$h[electronic resource]
260 $c1991
520 $aThree oldfield annual species (Abutilon theophrasti Medic., Ambrosia arternisiifolia L. and Setaria lutescens (Weigel) Hubb.) were investigated. All three developed substantial mycorrhizal infections when inoculated with Glomus etunicatum Becker & Gerd. Mycorrhizal infection dramatically increased phosphorus content and dry weight of both Abutilon and Ambrosia, but did not significantly affect dry weight and only modestly increased phosphorus content of Setaria. These results were consistent with a lower level of infection and much greater root density in Setaria than in the other species. When Abutilon was grown in the presence of Setaria, mycorrhizal infection had no effect on Abutilon phosphorus content or dry weight. The depressive effect of Setaria on the response to inoculation in Abutilon was probably not caused by water soluble allelopathic chemicals from Setaria roots, but soil leachate from Abutilon plants did inhibit infection in other Abutilon plants. The data were consistent with the hypothesis that the very high root density and effective soil exploitation of Setaria reduced the benefit from mycorrhizal infection in Abutilon via phosphorus depletion in a large proportion of the available soil volume. Furthermore, even if mycorrhizal infection were capable of increasing phosphorus content of Abutilon in the presence of Setaria, the very high competitive ability of Setaria for nitrogen in the soil could have reduced the benefit of an enhanced phosphorus content. Carbon isotope ratios were reduced in Abutilon by mycorrhizal infection, indicating a possible reduction in water use efficiency.
650 $aMicorriza
700 1 $aLI, M. G.
773 $tOecologia$gv. 85, n. 3, p. 403-412, 1991.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 5 | |
| 2. |  | RODRIGUES, A. S.; SOUZA, M. F.; PASCOAL, T.; PASSOS, O. S.; BARBOSA, C. de J.; MEISSNER FILHO, P. E. Comportamento de espécies de citros para o Citrus Tristeza virus (CTV) em diferentes ecossistemas. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 5., 2011, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical, 2011. 1 p. 1 CD-ROM PDF. 161_11.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
|    |
| 3. | | OLIVEIRA, M. Z. A. de; PRATES JÚNIOR, P.; SALLENAVE, L. P.; SOUZA, M. F.; PASCOAL, T.; BARBOSA, C. de J. Patógenos associados a doenças de plantas ornamentais na região metropolitana de Salvador, Bahia. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 5., 2011, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical, 2011. 1 p. 1 CD-ROM. PDF. 157_11.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
| |
| 4. | | SOUZA, M. F. A; PASCOAL, T.; BARBOSA, C. de J.; OLIVEIRA, E. J. de; SANTOS, D. W. J.; LEITE, K. R. B. Avaliação do uso de fertilizante foliar no comportamento de maracujazeiro amarelo infectado com o vírus do endurecimento dos frutos. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 5., 2011, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical, 2011. 1 p. 1 CD-ROM. PDF. 149_11.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
| |
| 5. | | SOUZA, M. F.; BARBOSA, C. de J.; OLIVEIRA, E. J. de; PASCOAL, T.; OLIVEIRA, M. Z. A.; FREITAS, J. P. X.; NEVES, C. G. Comportamento de híbridos de maracujá em relação à verrugose e a virose do endurecimento dos frutos. Tropical Plant Pathology, v.36, n.3,Brasília, ago, 2011. Suplemento. 1 PDF. 1094.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
| |
| Registros recuperados : 5 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
