کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6361384 1315667 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spartina densiflora demonstrates high tolerance to phenanthrene in soil and reduces it concentration
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
Spartina densiflora demonstrates high tolerance to phenanthrene in soil and reduces it concentration
چکیده انگلیسی

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 kg−1 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 kg−1 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 kg−1; 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.

► Spartina densiflora may be useful in phytoremediation. ► S. densiflora demonstrated a remarkable tolerance to phenanthrene stress. ► This species increased phenanthrene degradation in soils. ► It exhibited higher rates of disappearance of phenanthrene than other species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 62, Issue 8, August 2011, Pages 1800-1808
نویسندگان
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