Tissue Fractions of Cadmium in Two Hyperaccumulating Jerusalem Artichoke Genotypes

Table 1

Extractants and relevant extracted chemical forms of Cd.

Extract ion reagent	Code	Predominant forms of extracted Cd
80% v/v ethanol	FE	Cd-nitrate, Cd-chloride, Cd-amino acid complexes
Deionized water	FW	Soluble Cd-organic acid complexes, Cd(H2PO4)2
1 M NaCl	FNaCl	Cd-pectates, Cd-polypeptide, or Cd-protein complexes
2% v/v acetic acid	FAcet	Sparingly soluble CdHPO4, Cd3(PO)2, and/or other Cd-phosphate complexes
0. 6 M HCl	FHCl	Cd-oxalate