Metabolic interconnectivity among alternative respiration, residual respiration, carbohydrates and phenolics in leaves of Salvinia minima exposed to Cr[VI]
Floating and submerged leaves of the aquatic fern Salvinia minima were used to analyze a metabolic interconnectivity among mitochondrial alternative respiration, residual respiration [Rresp], carbohydrate metabolism and soluble phenolics [SP] accumulation occurring under Cr[VI] stress. Treatment wit...
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| Otros Autores: | , , |
| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2013prado.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 100 | 1 | |9 69117 |a Prado, C. | |
| 245 | 1 | 0 | |a Metabolic interconnectivity among alternative respiration, residual respiration, carbohydrates and phenolics in leaves of Salvinia minima exposed to Cr[VI] |
| 520 | |a Floating and submerged leaves of the aquatic fern Salvinia minima were used to analyze a metabolic interconnectivity among mitochondrial alternative respiration, residual respiration [Rresp], carbohydrate metabolism and soluble phenolics [SP] accumulation occurring under Cr[VI] stress. Treatment with Cr enhanced alternative pathway capacity [APcap] and [Rresp] in both leaf types. APcap/Tresp ratio revealed an increasing relative contribution of the alternative respiration to total respiration rate under Cr[VI] treatment. Sucrose content increased in Cr-treated leaves, but glucose and starch decreased. Enzyme profile showed that sucrose synthase [SS] rather than soluble acid invertase [AI] seems to be involved in sucrose metabolism of Cr-treated plants. Accumulation of SP showed a positive correlation with both APcap and Rresp in floating leaves. Decreases of SP in submerged leaves can be explained by an increased synthesis of polymerized phenolics. Results provide important new insights about influence of alternative and residual respirations on the synthesis of phenylpropanoid-derivative compounds. This work could also represent the first communication about involvement of the Rresp in defence mechanism of S. minima against Cr[VI] toxicity. | ||
| 653 | 0 | |a ALTERNATIVE PATHWAY CAPACITY | |
| 653 | 0 | |a CARBOHYDRATES | |
| 653 | 0 | |a CR[VI] | |
| 653 | 0 | |a ENZYMES | |
| 653 | 0 | |a PHENOLICS | |
| 653 | 0 | |a RESIDUAL RESPIRATION | |
| 653 | 0 | |a CARBOHYDRATE | |
| 653 | 0 | |a CHROMIUM | |
| 653 | 0 | |a DEFENSE MECHANISM | |
| 653 | 0 | |a ENZYME ACTIVITY | |
| 653 | 0 | |a FERN | |
| 653 | 0 | |a LEAF | |
| 653 | 0 | |a METABOLISM | |
| 653 | 0 | |a PHENOLIC COMPOUND | |
| 653 | 0 | |a POLLUTION EXPOSURE | |
| 653 | 0 | |a RESPIRATION | |
| 653 | 0 | |a SUBMERGED VEGETATION | |
| 700 | 1 | |9 67202 |a Rosa, Mariana | |
| 700 | 1 | |9 6303 |a Pagano, Eduardo Antonio | |
| 700 | 1 | |9 67208 |a Prado, Fernando E. | |
| 773 | |t Environmental and Experimental Botany |g vol.87 (2013), p.32-38 | ||
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| 900 | |a ^tMetabolic interconnectivity among alternative respiration, residual respiration, carbohydrates and phenolics in leaves of Salvinia minima exposed to Cr[VI] | ||
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| 900 | |a ^aPrado, C.^tCátedra de Fisiología Vegetal, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, Miguel Lillo 205, CP 4000 San Miguel de Tucumán, Argentina | ||
| 900 | |a ^aRosa, M.^tCátedra de Fisiología Vegetal, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, Miguel Lillo 205, CP 4000 San Miguel de Tucumán, Argentina | ||
| 900 | |a ^aPagano, E.^tDepartamento de Biología Aplicada y Alimentos, Facultad de Agronomía, Universidad de Buenos Aires, CP 1417 Buenos Aires, Argentina | ||
| 900 | |a ^aPrado, F.^tCátedra de Fisiología Vegetal, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, Miguel Lillo 205, CP 4000 San Miguel de Tucumán, Argentina | ||
| 900 | |a ^tEnvironmental and Experimental Botany^cEnviron. Exp. Bot. | ||
| 900 | |a en | ||
| 900 | |a 32 | ||
| 900 | |a ^i | ||
| 900 | |a Vol. 87 | ||
| 900 | |a 38 | ||
| 900 | |a ALTERNATIVE PATHWAY CAPACITY | ||
| 900 | |a CARBOHYDRATES | ||
| 900 | |a CR[VI] | ||
| 900 | |a ENZYMES | ||
| 900 | |a PHENOLICS | ||
| 900 | |a RESIDUAL RESPIRATION | ||
| 900 | |a CARBOHYDRATE | ||
| 900 | |a CHROMIUM | ||
| 900 | |a DEFENSE MECHANISM | ||
| 900 | |a ENZYME ACTIVITY | ||
| 900 | |a FERN | ||
| 900 | |a LEAF | ||
| 900 | |a METABOLISM | ||
| 900 | |a PHENOLIC COMPOUND | ||
| 900 | |a POLLUTION EXPOSURE | ||
| 900 | |a RESPIRATION | ||
| 900 | |a SUBMERGED VEGETATION | ||
| 900 | |a Floating and submerged leaves of the aquatic fern Salvinia minima were used to analyze a metabolic interconnectivity among mitochondrial alternative respiration, residual respiration [Rresp], carbohydrate metabolism and soluble phenolics [SP] accumulation occurring under Cr[VI] stress. Treatment with Cr enhanced alternative pathway capacity [APcap] and [Rresp] in both leaf types. APcap/Tresp ratio revealed an increasing relative contribution of the alternative respiration to total respiration rate under Cr[VI] treatment. Sucrose content increased in Cr-treated leaves, but glucose and starch decreased. Enzyme profile showed that sucrose synthase [SS] rather than soluble acid invertase [AI] seems to be involved in sucrose metabolism of Cr-treated plants. Accumulation of SP showed a positive correlation with both APcap and Rresp in floating leaves. Decreases of SP in submerged leaves can be explained by an increased synthesis of polymerized phenolics. Results provide important new insights about influence of alternative and residual respirations on the synthesis of phenylpropanoid-derivative compounds. This work could also represent the first communication about involvement of the Rresp in defence mechanism of S. minima against Cr[VI] toxicity. | ||
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