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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
02/04/2002 |
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Data da última atualização: |
16/01/2025 |
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Autoria: |
CUMMING, J. R.; WEINSTEIN, L. H. |
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Título: |
Utilization of AlPO4 as a phosphorus source by ectomycorrhizal Pinus rigida Mill seedlings. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
New Phytologist, v. 116, n. 1, p. 99-106, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
Mycorrhizal infection of roots of Pinus rigida Mill, seedlings by Pisolithus tinctorius Coker & Couch maintained normal foliar P relations when seedlings were exposed to Al in solution. To investigate how this symbiosis aids in P acquisition in the presence of Al, seedlings were grown in sand culture with solutions containing between 1 and 50 μM NaH2PO4 (Pi) with or without insoluble AlPO4 in the substrate. Mycorrhizal seedlings had a higher affinity for Pi than non-mycorrhizal seedlings as judged by superior growth and foliar P contents at all Pi levels tested. In addition, mycorrhizal seedlings, but not nonmycorrhizal seedlings, effectively extracted P from AlPO4 through the dissolution of this insoluble salt. Measurement of matrix solution pH indicated that increased proton production, in association with high proliferation of mycorrhizal roots under P-limiting conditions, led to increased AlPO4 solubilization. |
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Thesagro: |
Fosfato de Alumínio; Fósforo; Micorriza; Pisolithus Tinctorius. |
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Thesaurus Nal: |
Pinus rigida. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01502naa a2200193 a 4500
001 1279506
005 2025-01-16
008 1990 bl uuuu u00u1 u #d
100 1 $aCUMMING, J. R.
245 $aUtilization of AlPO4 as a phosphorus source by ectomycorrhizal Pinus rigida Mill seedlings.$h[electronic resource]
260 $c1990
520 $aMycorrhizal infection of roots of Pinus rigida Mill, seedlings by Pisolithus tinctorius Coker & Couch maintained normal foliar P relations when seedlings were exposed to Al in solution. To investigate how this symbiosis aids in P acquisition in the presence of Al, seedlings were grown in sand culture with solutions containing between 1 and 50 μM NaH2PO4 (Pi) with or without insoluble AlPO4 in the substrate. Mycorrhizal seedlings had a higher affinity for Pi than non-mycorrhizal seedlings as judged by superior growth and foliar P contents at all Pi levels tested. In addition, mycorrhizal seedlings, but not nonmycorrhizal seedlings, effectively extracted P from AlPO4 through the dissolution of this insoluble salt. Measurement of matrix solution pH indicated that increased proton production, in association with high proliferation of mycorrhizal roots under P-limiting conditions, led to increased AlPO4 solubilization.
650 $aPinus rigida
650 $aFosfato de Alumínio
650 $aFósforo
650 $aMicorriza
650 $aPisolithus Tinctorius
700 1 $aWEINSTEIN, L. H.
773 $tNew Phytologist$gv. 116, n. 1, p. 99-106, 1990.
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Registro original: |
Embrapa Florestas (CNPF) |
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