6533b7d1fe1ef96bd125cea5

RESEARCH PRODUCT

The distribution of Rare Earth Elements discriminates the growth substrate of Vitis vinifera L.

Eristanna PalazzoloFilippo SaianoMarcella BarberaMarcella BarberaPierpaolo Zuddas

subject

Environmental EngineeringVitis Vinifera L. plantHealth Toxicology and MutagenesisSettore AGR/13 - Chimica Agraria0208 environmental biotechnologyRare earth02 engineering and technology010501 environmental sciences01 natural sciencesFood-TraceabilitySoilSoil PollutantsEnvironmental ChemistrySettore CHIM/01 - Chimica AnaliticaVitisVitis viniferaInductively coupled plasma mass spectrometry0105 earth and related environmental sciencesContaminated soilsRare Earth Elements (REE)ChemistryfungiPublic Health Environmental and Occupational Healthfood and beveragesGeneral MedicineGeneral ChemistryContaminationPollutionSubstrate (marine biology)Soil contaminationSettore GEO/08 - Geochimica E Vulcanologia020801 environmental engineeringPlant LeavesEnvironmental chemistryREE normalized SpectraMetals Rare Earth

description

Sustainable agricultural, food-related strategies and geographic traceability require understanding of the plant physiological response to stress potentially generated by contaminated soils. Here, we have investigated the effect of contaminated substrate on growth of Vitis vinifera L. plants analysing the distribution of full Rare Earth Elements (REE) spectra in different parts of the plant. Experiments were carried out using pristine plants growing in a handmade substrate (blank experiment) and in REE artificially-enriched soil (spiked experiment). Our results show that both plant mass and REE amount in leaves are not influenced by the substrate enrichment while roots are by one-order of magnitude enriched for three-orders of magnitude enhancement of the soil substrate. This clearly indicates that soil contamination does not significantly influence the REE amount in the aerial parts. However, the spectra of REE normalized changes when the soil is enriched. We found that Light-REE (from La to Gd) are by more than one order of magnitude enriched compared to Heavy-REE (from Tb to Lu plus Y) in spiked experiment showing the specific response of Vitis vinifera L. to the stress generated by soil contamination. We propose that REE distribution spectra is a marker of Vitis vinifera L. substrate of growth and providing a new tool for tracing the geographical origin of agri-food products.

https://doi.org/10.1016/j.chemosphere.2020.128993