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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/35| Capacity of the aquatic fern (Salvinia minima Baker) to accumulatehigh concentrations of nickel in its tissues, and its effect on plantphysiological processes | |
| JORGE MANUEL SANTAMARIA FERNANDEZ | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| An experiment was designed to assess the capacity of Salvinia minima Baker to uptake and accumulatenickel in its tissues and to evaluate whether or not this uptake can affect its physiology. Our results suggestthat S. minima plants are able to take up high amounts of nickel in its tissues, particularly in roots. In fact,our results support the idea that S. minima might be considered a hyper-accumulator of nickel, as it is ableto accumulate 16.3 mg g−1(whole plant DW basis). Our results also showed a two-steps uptake patternof nickel, with a fast uptake of nickel at the first 6 to 12 h of being expose to the metal, followed by a slowtake up phase until the end of the experiment at 144 h. S. minima thus, may be considered as a fern usefulin the phytoremediation of residual water bodies contaminated with this metal.Also from our results, S. minima can tolerate fair concentrations of the metal; however, at concen-trations higher than 80 M Ni (1.5 mg g−1internal nickel concentration), its physiological performancecan be affected. For instance, the integrity of cell membranes was affected as the metal concentrationand exposure time increased. The accumulation of high concentrations of internal nickel did also affectphotosynthesis, the efficiency of PSII, and the concentration of photosynthetic pigments, although at alower extent. | |
| 30-06-2014 | |
| Artículo | |
| CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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| 32072.pdf | Artículo de Investigación | 962.89 kB | Adobe PDF | Visualizar/Abrir |