demonstrated gold and silver nanoparticle synthesis within live alfalfa plants from solid media. Extracellular nanoparticle synthesis using plant leaf extracts rather than whole plants would be more economical owing to easier downstream processing. Pioneering works on nanoparticle synthesis using plant extracts have been carried out by
For instance gold clusters surrounded by a shell of organic ligands covalently attach to proteins or other biological substances and can be used for labeling in structural biology. In the present report we show the possibility of using live plants for the fabrication of nanoparticles. Alfalfa plants were grown in an AuCl4 rich environment.