Copper localization in Cannabis sativa L. grown in a copper-rich solution

Arru, Laura; Rognoni, Sara; Baroncini, Micaela; Bonatti, P. Medeghini; Perata, Pierdomenico

doi:10.1007/s10681-004-4752-0

Cited by 47 publications

(20 citation statements)

References 25 publications

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“…Also, the first Cu-Cu distance of 2.56 Å in the Cu nanoparticle is shorter than the distance of 2.70-2.90 Å reported for Cu-thiolate clusters (8,31) and matches only that in elemental copper. In addition, organic S or P was not observed in the Cu grains using scanning electron microscopy-energy dispersive X-ray fluorescence (SEM-EDX) in agreement with observations on electrondense Cu granules in plants using electron energy loss spectroscopy (EELS) and EDX (10,12). Complexation to oxygen ligands is possible because EXAFS has relatively low sensitivity to low-Z atoms.…”

Section: Results and Interpretationssupporting

confidence: 81%

Formation of Metallic Copper Nanoparticles at the Soil−Root Interface

Manceau

Nagy

Marcus

et al. 2008

Environ. Sci. Technol.

222

117

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Copper is an essential element in the cellular electron-transport chain, but as a free ion it can catalyze production of damaging radicals. Thus, all life forms attempt to prevent copper toxicity. Plants diminish excess copper in two structural regions: rare hyperaccumulators bind cationic copper to organic ligands in subaerial tissues, whereas widespread metal-tolerant plants segregate copper dominantly in roots by mechanisms thought to be analogous. Here we show using synchrotron microanalyses that common wetlands plants Phragmites australis and Iris pseudoacorus can transform copper into metallic nanoparticles in and near roots with evidence of assistance by endomycorrhizal fungi when grown in contaminated soil in the natural environment. Biomolecular responses to oxidative stress, similar to reactions used to abiotically synthesize Cu0 nanostructures of controlled size and shape, likely cause the transformation. This newly identified mode of copper biomineralization by plant roots under copper stress may be common in oxygenated environments.

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Section: Results and Interpretationssupporting

confidence: 81%

Formation of Metallic Copper Nanoparticles at the Soil−Root Interface

Manceau

Nagy

Marcus

et al. 2008

Environ. Sci. Technol.

222

117

View full text Add to dashboard Cite

show abstract

“…Analyses were performed using scanning electron microscope Vega 5135 Tescan equipped with an X-EDX system (Arru et al, 2004). All tests were repeated at least three times, and the results are presented as means 7SD.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

The impact of copper ions on growth, lipid peroxidation, and phenolic compound accumulation and localization in lentil (Lens culinaris Medic.) seedlings

Janas

Zielińska-Tomaszewska

Rybaczek

et al. 2010

Journal of Plant Physiology

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“…In a study of four forest species that are Mn hyperaccumulators -Gossia bidwillii, Virotia neurophylla, Macadamia integrifolia and Macadamia tetraphylla -Fernando et al (2006a,b) suggested that the accumulation of the excess Mn in the leaves occurs by storage in the nutrient in the mesophyll cells of the palisade parenchyma (photosynthetically active tissue), as a behavior pattern in these accumulator plants, unlike what occurs with Cu and Ni, which are accumulated in the tissues of the epidermis (trichomas) and in the vacuole (Arru et al, 2004;Broadhurst et al, 2004), and with Zn and Cd, which are accumulated in the vacuoles of the spongy mesophyll cells and apoplast (Küpper et al, 1999;Di Toppi et al, 2005). The accumulation of Mn in the form of oxalate crystals is debatable (González & Lynch, 1999).…”

Section: Resultsmentioning

confidence: 99%