NDLI: Influence of CdCl$_{2}$ and CdSO$_{4}$ supplementation on Cd distribution and ligand environment in leaves of the Cd hyperaccumulator Noccaea (Thlaspi) praecox

Content Provider	Springer Nature Link
Author	Koren, Špela Arčon, Iztok Kump, Peter Nečemer, Marijan Vogel Mikuš, Katarina
Copyright Year	2013
Abstract	The aim was to investigate whether different Cd salts in the nutrient solution of the Cd/Zn hyperaccumulator Noccaea (Thlaspi) praecox alter leaf Cd distribution and Cd ligand environment, and plant fitness.Plants were grown for 8 weeks with 100/300 μM CdCl$_{2}$ or CdSO$_{4}$. Leaf biomass, and total chlorophyll, anthocyanin, Cd, Cl, S and P concentrations were monitored. Cd localisation and ligand environment in leaves were analysed using quantitative synchrotron-based micro-X-ray fluorescence imaging, and Cd K-edge X-ray absorption fine structure and Cd L$_{3}$-edge micro-X-ray absorption near-edge structure measurements.Cd uptake and plant fitness were comparable for CdCl$_{2}$ and CdSO$_{4}$ treatments, and depended on applied Cd concentration. In all treatments, Cd preferentially accumulated with high concentrations of Cl in vacuoles of large vacuolarised epidermal cells, bound mainly to oxygen-based (O)-ligands. In the mesophyll of CdCl$_{2}$− treated plants, Cd was preferentially sequestered in vacuoles, while for CdSO$_{4}$, Cd accumulated preferentially in the apoplast. In the symplast, O-ligands increased with increasing Cd concentrations; in the apoplast, sulphur-based (S)-ligands prevailed.Cd partitioning between leaf mesophyll apoplast and symplast and the Cd ligand environment in N. praecox depend on the Cd salt type and concentration added to the nutrient solution.
Starting Page	125
Ending Page	148
Page Count	24
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	370
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anions Cadmium salts Synchrotron μ-X-ray fluorescence Cd K-edge X-ray absorption fine structure Cd L$_{3}$-edge μ-X-ray absorption near-edge structure Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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