کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4425706 1309111 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phenanthrene uptake by Medicago sativa L. under the influence of an arbuscular mycorrhizal fungus
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Phenanthrene uptake by Medicago sativa L. under the influence of an arbuscular mycorrhizal fungus
چکیده انگلیسی

Phenanthrene uptake by Medicago sativa L. was investigated under the influence of an arbuscular mycorrhizal fungus. Inoculation of lucerne with the arbuscular mycorrhizal fungus Glomus etunicatum L. resulted in higher phenanthrene accumulation in the roots and lower accumulation in the shoots compared to non-mycorrhizal controls. Studies on sorption and desorption of phenanthrene by roots and characterization of heterogeneity of mycorrhizal and non-mycorrhizal roots using solid-state 13C nuclear magnetic resonance spectroscopy (13C NMR) demonstrated that increased aromatic components due to mycorrhizal inoculation resulted in enhanced phenanthrene uptake by the roots but lower translocation to the shoots. Direct visualization using two-photon excitation microscopy (TPEM) revealed higher phenanthrene accumulation in epidermal cells of roots and lower transport into the root interior and stem in mycorrhizal plants than in non-mycorrhizal controls. These results provide some insight into the mechanisms by which arbuscular mycorrhizal inoculation may influence the uptake of organic contaminants by plants.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 157, Issue 5, May 2009, Pages 1613–1618
نویسندگان
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