کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5559659 1561692 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toxic effect of cadmium adsorbed by different sizes of nano-hydroxyapatite on the growth of rice seedlings
ترجمه فارسی عنوان
اثر سمی کادمیوم جذب شده توسط اندازه های مختلف نانو هیدروکسی آپاتیت بر رشد نهال های برنج
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
چکیده انگلیسی
Information regarding the toxic effects of cadmium (Cd) adsorbed by nano-hydroxyapatite (NHAP-Cd) on the growth of crop plants remain limited. We investigated the mechanism of NHAP-Cd (diameters, 20 and 40 nm; NHAP20-Cd and NHAP40-Cd, respectively) phytotoxicity. Rice seedlings treated with Cd and NHAP20-Cd showed more severe growth retardation compared to those treated with NHAP40-Cd, for the same Cd concentration. Transmission electron microscopy revealed NHAP in the seedlings. The nanoparticles entered the rice seedlings with no Cd2+ signals in the NHAP treatments compared to −0.47 pmol cm−2 s−1 of Cd2+ fluxes in the Cd treatment. The higher Cd2+ content in the leaves and mesocotyl of NHAP20-Cd-treated rice seedlings suggested that smaller NHAP-Cd can translocate easily to the aboveground parts. Further, NHAP-Cd increased oxidative stress, which was determined as catalase activity changes in this study. Thus, NHAP-Cd particles in the growth medium can be transported to rice seedlings and cause toxicity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Toxicology and Pharmacology - Volume 52, June 2017, Pages 1-7
نویسندگان
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