Tissue fractions of cadmium in two hyperaccumulating Jerusalem artichoke genotypes

X. Long, N. Ni, Z. Liu, Zed Rengel, X. Jiang, H. Shao

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    In order to investigate the mechanisms in two Jerusalem artichoke (Helianthus tuberosus L.) genotypes that hyperaccumulate Cd, a sand-culture experiment was carried out to characterize fractionation of Cd in tissue of Cd-hyperaccumulating genotypes NY2 and NY5. The sequential extractants were: 80% v/v ethanol (F E), deionized water (F W), 1 M NaCl (F NaCl), 2% v/v acetic acid (F Acet), and 0.6 M HCl (F HCl). After 20 days of treatments, NY5 had greater plant biomass and greater Cd accumulation in tissues than NY2. In both genotypes the F NaCl fraction was the highest in roots and stems, whereas the F Acet and F HCl fractions were the highest in leaves. With an increase in Cd concentration in the culture solution, the content of every Cd fraction also increased. The F W and F NaCl ratios in roots were lower in NY5 than in NY2, while the amount of other Cd forms was higher. It implied that, in high accumulator, namely, NY 5, the complex of insoluble phosphate tends to be shaped more easily which was much better for Cd accumulation. Besides, translocation from plasma to vacuole after combination with protein may be one of the main mechanisms in Cd-accumulator Jerusalem artichoke genotypes. © 2014 Xiaohua Long et al.
    Original languageEnglish
    Pages (from-to)6pp
    JournalTHESCIENTIFICWORLDJOURNAL
    Volume2014
    DOIs
    Publication statusPublished - 2014

    Fingerprint Dive into the research topics of 'Tissue fractions of cadmium in two hyperaccumulating Jerusalem artichoke genotypes'. Together they form a unique fingerprint.

    Cite this