کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6361384 | 1315667 | 2011 | 9 صفحه PDF | دانلود رایگان |

The present study was conducted to investigate the tolerance of Spartina densiflora to phenanthrene, and to test its ability in phenanthrene dissipation. A glasshouse experiment was designed to investigate the effect of phenanthrene from 0 to 1000 mg kgâ1 on growth and photosynthetic apparatus of S. densiflora by measuring chlorophyll fluorescence parameters, gas exchange and photosynthetic pigments. We also performed chemical analysis of plant samples, and determined the concentration of phenanthrene remaining in soil. S. densiflora survived to concentrations as high as 1000 mg kgâ1 phenanthrene in soil; in fact, there was no significant difference in RGR among the treatments after 30 days. Otherwise, phenanthrene affected photosynthetic apparatus at 100 and 1000 mg kgâ1; thus, the lower ΦPSII could be explained by the declined photosynthetic pigment concentrations. Soil extraction indicated a more marked rate of phenanthrene disappearance in the soil in the presence of S. densiflora.
⺠Spartina densiflora may be useful in phytoremediation. ⺠S. densiflora demonstrated a remarkable tolerance to phenanthrene stress. ⺠This species increased phenanthrene degradation in soils. ⺠It exhibited higher rates of disappearance of phenanthrene than other species.
Journal: Marine Pollution Bulletin - Volume 62, Issue 8, August 2011, Pages 1800-1808