Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar
The phosphorus (P) content of whole roots and root apices has been reported to increase under aluminum (Al) stress, particularly in Al-sensitive plant varieties. We investigated the impact of Al toxicity on the P content of root apices of two tropical forage cultivars of the Brachiaria genus, grown...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2002
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/77716 |
| _version_ | 1855536838840680448 |
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| author | Wenzl, Peter Mayer, Jorge Edgard Rao, Idupulapati M. |
| author_browse | Mayer, Jorge Edgard Rao, Idupulapati M. Wenzl, Peter |
| author_facet | Wenzl, Peter Mayer, Jorge Edgard Rao, Idupulapati M. |
| author_sort | Wenzl, Peter |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The phosphorus (P) content of whole roots and root apices has been reported to increase under aluminum (Al) stress, particularly in Al-sensitive plant varieties. We investigated the impact of Al toxicity on the P content of root apices of two tropical forage cultivars of the Brachiaria genus, grown in Al-containing low-ionic-strength nutrient solutions. Exposure to Al did not affect apical P concentrations in Al-resistant B. decumbens cv. Basilisk. In contrast to previous results obtained with other plant species, however, it caused a 70% decline in the apical P content of Al-sensitive B. ruziziensis cv. Common, despite the simultaneously increasing P levels in older root portions. This effect was largely due to a reduced accumulation of organically bound P, because less than 7% of the P in root apices was in the inorganic form in either species or treatment. The P content of root apices might be a useful indicator for evaluating the resistance of Brachiaria cultivars to prolonged Al stress. |
| format | Journal Article |
| id | CGSpace77716 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace777162025-03-13T09:45:08Z Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar Wenzl, Peter Mayer, Jorge Edgard Rao, Idupulapati M. feed crops brachiaria decumbens bracharia ruziziensis aluminium stress phosphorus aluminio estrés fósforo The phosphorus (P) content of whole roots and root apices has been reported to increase under aluminum (Al) stress, particularly in Al-sensitive plant varieties. We investigated the impact of Al toxicity on the P content of root apices of two tropical forage cultivars of the Brachiaria genus, grown in Al-containing low-ionic-strength nutrient solutions. Exposure to Al did not affect apical P concentrations in Al-resistant B. decumbens cv. Basilisk. In contrast to previous results obtained with other plant species, however, it caused a 70% decline in the apical P content of Al-sensitive B. ruziziensis cv. Common, despite the simultaneously increasing P levels in older root portions. This effect was largely due to a reduced accumulation of organically bound P, because less than 7% of the P in root apices was in the inorganic form in either species or treatment. The P content of root apices might be a useful indicator for evaluating the resistance of Brachiaria cultivars to prolonged Al stress. 2002-08-13 2016-11-10T20:30:31Z 2016-11-10T20:30:31Z Journal Article https://hdl.handle.net/10568/77716 en Open Access Informa UK Limited Wenzl, Peter; Mayer, Jorge Edgard; Rao, Idupulapati Madhusudana. 2002. Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar . Journal of Plant Nutrition (USA) 25:1821-1828. |
| spellingShingle | feed crops brachiaria decumbens bracharia ruziziensis aluminium stress phosphorus aluminio estrés fósforo Wenzl, Peter Mayer, Jorge Edgard Rao, Idupulapati M. Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title | Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title_full | Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title_fullStr | Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title_full_unstemmed | Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title_short | Aluminum stress inhibits accumulation of phosphorus in root apices of aluminum-sensitive but not aluminum-resistant brachiaria cultivar |
| title_sort | aluminum stress inhibits accumulation of phosphorus in root apices of aluminum sensitive but not aluminum resistant brachiaria cultivar |
| topic | feed crops brachiaria decumbens bracharia ruziziensis aluminium stress phosphorus aluminio estrés fósforo |
| url | https://hdl.handle.net/10568/77716 |
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