Uptake and accumulation of multiwalled carbon nanotubes change the morphometric and biochemical characteristics of

2012, Volume 6, Issue 2

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Frontiers of Chemical Science and Engineering >> 2012, Volume 6, Issue 2 doi: 10.1007/s11705-012-1290-5

Uptake and accumulation of multiwalled carbon nanotubes change the morphometric and biochemical characteristics of

1. Biology Faculty, Lomonosov Moscow State University, Moscow 119991, Russia; 2. Derzhavin Tambov State University, Tambov 392000, Russia; 3. Siberian Institute of Plants Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk 664033, Russia; 4. NanoTechCenter Ltd., Tambov 392000, Russia; 5. Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow 117997, Russia

Available online: 2012-06-05

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Abstract

We have studied the effect of the engineered nanomaterial Taunit, containing multiwalled carbon nanotubes (MWCNTs), on the growth of seedlings and investigated whether affected plants uptake and accumulate MWCNTs. We found that 100 μg/mL and 1000 μg/mL of Taunit stimulated the growth of roots and stems, and enhanced the peroxidase activity in these parts of plants. Microscopy studies showed the presence of MWCNTs in the root and leaf tissues of seedlings exposed to Taunit, suggesting that MWCNTs have a capacity to penetrate the cell walls, accumulate in roots and translocate to the leaves. Thus the stimulating effect of MWCNTs on seedlings of may be associated with the primary uptake and accumulation of MWCNTs by plant roots followed by translocation to the other plant tissues.

Keywords

multiwalled carbon nanotubes ; plants ; electron microscopy

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