University of Osnabrück, Institute of Chemistry, Inorganic Chemistry I-Materials Research, Barbarastr. 7, 49069 Osnabrück, Germany.
J Biomed Nanotechnol. 2009 Jun;5(3):278-84. doi: 10.1166/jbn.2009.1032.
Watering of Phalaenopsis and Arabidopsis plants with an aqueous colloidal solution of NaYF4:Yb,Er nanoparticles leads to uptake and transport of nanoparticles into the plants within a few days. Characteristic upconversion emission of the particles can be excited in the shoot and the leaves of the plants. Uptake of particles by the root was studied by confocal laser-scanning microscopy using excitation in the near-infrared. We demonstrated that nanoparticles are able to enter the stele of the plant root and thus the long distance transport system despite their relatively large size in comparison to the size of the structures responsible for the transport.
用 NaYF4:Yb,Er 纳米粒子的水胶体溶液对蝴蝶兰和拟南芥植物进行浇水，导致纳米粒子在几天内被吸收并运输到植物体内。可以在植物的茎和叶子中激发粒子的特征上转换发射。通过使用近红外光激发的共焦激光扫描显微镜研究了根部对颗粒的吸收。我们证明，尽管纳米颗粒的尺寸与负责运输的结构的尺寸相比相对较大，但它们仍能够进入植物根的中柱，从而进入长途运输系统。
