Geochemical behaviour of rare earths in Vitis vinifera grafted onto different rootstocks and growing on several soils

Abstract

The geochemical behaviour of lanthanides and yttrium (Rare Earth Elements, REEs) has been investigated mainly in geological systems where these elements represent the best proxies of processes involving the occurrence of an interface between different media. This behaviour is assessed according to features recorded in sequences of REE concentrations along the REE series normalised with respect to a reference material. In this study, the geochemical behaviour of REE was investigated in different parts of Vitis vinifera specimens grown off-soil, on soils of different nature and grafted onto several rootstocks in order to evaluate effects induced by these changes. The results indicated that roots are the plant organs where REEs are preferentially concentrated, in particular elements from Sm to Ho (middle REE, MREE) whereas Eu enrichments occur in aerial parts. The geochemical behaviour of REE suggests that MREE enrichments in roots are due to preferential MREE interactions with biological membranes or to surface complexation with newly formed phosphates. Eu-positive anomalies suggest that Eu(3+) can form stable organic complexes in place of Ca(2+) in several biological processes in xylem fluids. The possibility that Eu mobility in these fluids can be enhanced by its reductive speciation as Eu(2+) cannot be ruled out. The assessment of the geochemical behaviour of REE according to the theory of the Tetrad Effect carried out confirms that REEs coming from soil are scavenged onto root tissues or mineral surfaces whereas their behaviour in aerial parts of V. vinifera is driven by dissolved complexation.

Distribution of YLOID in soil-grapevine system (Vitis vinifera L.) as tool for geographical characterization of agro-food products. A two years case study on different grafting combinations

“…are reported in Figs. 1-4 Censi et al, 2014). The standard deviations values found among the soil samples reflect the good spatial homogeneity of the studied area, confirming the hypothesis of the ''similar soil", in the YLOID distribution, experienced by the different roots of the different grapevines (grafting combination) in vineyard.…”

“…Investigating lanthanoids and yttrium distributions in V. vinifera, most of data were treated according to a ''classical" approach of a multivariate data analysis (Aceto et al, 2013;Bertoldi et al, 2011). In a relatively recent paper (Censi, Saiano, Pisciotta, & Tuzzolino, 2014), it has been demonstrated that YLOID patterns of aerial parts of three different rootstocks grown off-soil, were a suitable geochemical proxy, even if biological substrata (roots, vine shoots, leaves, etc.) are involved, of three soils of different nature.…”

87Sr/86Sr and trace element mapping of geosphere-hydrosphere-biosphere interactions: A case study in Ireland

“…The potential effect of REE+Y on plant growth and their mechanisms for entering into biomass is of growing interest, particularly the uptake, distribution and accumulation of REE+Y in plants (Wyttenbach et al 1998;Tyler 2004;Tyler & Olsson 2005;Brioschi et al 2013;Wen et al 2001;Fu et al 2001;Censi et al 2014;Miao et al 2008;Miao et al 2011;Lima e Cunha et al 2014;Ding et al 2006;Hu et al 2006). Despite this, the REE+Y content of wild-growing plants in natural ecosystems is much less studied.…”

Conservation of 87 Sr/ 86 Sr isotopic ratios during the winemaking processes of ‘Red’ wines to validate their use as geographic tracer

“…According to the consortia regulation all wines analysed are made by the Cesanese red grape variety (monocultivar); this ensure from possible differential elemental uptake from soil via the vine roots as seen to occur for REE (Censi et al, 2014).…”