Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6359504 | Marine Pollution Bulletin | 2013 | 5 Pages |
Abstract
The halophytic shrub Halimione portulacoides demonstrates a high tolerance to heavy metal contamination and a capacity for accumulating metals within its tissues. On the Iberian Peninsula, this species has colonized habitats with high levels of metal pollution. The aim of this study is to analyze the response of H. portulacoides stem cuttings to this pollution. Growth, photosynthesis and metal uptake were examined in H. portulacoides through an experiment in which stem cuttings were replanted in metal-contaminated soil. This condition decreased growth and lowered both photosynthetic rate and stomatal conductance. Reduced photosynthetic performance was largely due to the reduced concentration of photosynthetic pigments. Despite these responses, there was some important evidence suggesting the phytoremediatory potential of Halimione stem cuttings. The results of our study indicate that this salt-marsh shrub may represent a biotool of value in the restoration of polluted areas.
Keywords
Chl bquantum efficiency of PSIINPQRGRCx+cHalimione portulacoidesΦPSIIChl aFv/Fmmaximum quantum efficiency of PSII photochemistryNon-photochemical quenchingminimal fluorescence level in the dark-adapted statemaximal fluorescence level in the dark-adapted statevariable fluorescence level in the dark-adapted stateintercellular CO2 concentrationPhotosynthesisStem cuttingsRelative growth ratenet photosynthetic rateStomatal conductanceCarotenoidsChlorophyll achlorophyll bPhytoremediation
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
L. Andrades-Moreno, J. Cambrollé, M.E. Figueroa, E. Mateos-Naranjo,