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中南大学(金币+400, 翻译EPI+1):不管好不好，但是你帮忙了，真心的说声谢谢啊！金币都给你，哈哈！ 2010-09-04 08:00:00
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Mn concentration gradient in certain treatments (0,200,500,2000,5000 and 10000 μmol • L-1), hyperaccumulators - Rumex Knotweed (Polygonum lapathifolium) different organs of the Fourier transform infrared spectroscopy (FTIR ) map has changed. Among them, the stem tissue in 3420 and 2920 cm-1 处 manganese concentrations greater than 200μ mol • L-1, the peak height increased and then decreased, reflecting changes in the situation of organic matter transport is blocked, that leaves Polygonaceae Rumex Mn2 + stimulation at low concentrations likely to result in a large number of organic compounds as osmolytes to enhance their resistance to manganese, high concentrations of Mn2 + is inhibited organic secretion and transport; roots and leaves at 2920 and 1630 cm-1 have demonstrated different trends, but reflected A variation of the low concentration of Mn2 + to the next dock Knotweed chelating organic acids secreted continuously Mn2 +, with Mn toxicity increased, the carboxylic acid chelating weak force; root tissue, stem tissue, leaf tissue exhibits a 1060 cm-1 differences in change, but all its lipid peroxidation; described above, the use of heavy metal hyperaccumulator FTIR chemical components with value |
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