کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
576913 | 1453093 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mn accumulation and tolerance in Celosia argentea Linn.: A new Mn-hyperaccumulating plant species
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Identifying a hyperaccumulator is an important groundwork for the phytoextraction of heavy metal-contaminated soil. Celosia argentea Linn., which grew on a Mn tailing wasteland, was found to hyperaccumulate Mn (14 362 mg kgâ1 in leaf dry matter) in this study. To investigate Mn tolerance and accumulation in C. argentea, a hydroponic culture experiment was conducted in a greenhouse. Results showed that the biomass and the relative growth rate of C. argentea were insignificantly different (p > 0.05) at the Mn supply level ranging from 2.5 mg Lâ1 (control) to 400 mg Lâ1. Manganese concentrations in leaves, stems, and roots reached maxima of 20 228, 8872, and 2823 mg kgâ1 at 600 mg Mn Lâ1, respectively. The relative rate of Mn accumulation increased by 91.2% at 400 mg Mn Lâ1. Over 95% of the total Mn taken up by C. argentea was translocated to shoots. Thus, C. argentea exhibits the basic characteristics of a Mn-hyperaccumulator. This species has great potential to remediate Mn-contaminated soil cheaply and can also aid the studies of Mn uptake, translocation, speciation, distribution and detoxification in plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 267, 28 February 2014, Pages 136-141
Journal: Journal of Hazardous Materials - Volume 267, 28 February 2014, Pages 136-141
نویسندگان
Jie Liu, Weiwei Shang, Xuehong Zhang, Yinian Zhu, Ke Yu,