Premium
Heavy metals in white lupin: uptake, root‐to‐shoot transfer and redistribution within the plant
Author(s) -
Page Valérie,
Weisskopf Laure,
Feller Urs
Publication year - 2006
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2006.01756.x
Subject(s) - lupinus , shoot , cadmium , phloem , chemistry , xylem , zinc , manganese , botany , redistribution (election) , horticulture , biology , organic chemistry , politics , political science , law
Summary• The translocation of manganese (Mn), nickel (Ni), cobalt (Co), zinc (Zn) and cadmium (Cd) in white lupin ( Lupinus albus cv. Amiga) was compared considering root‐to‐shoot transport, and redistribution in the root system and in the shoot, as well as the content at different stages of cluster roots and in other roots. • To investigate the redistribution of these heavy metals, lupin plants were labelled via the root for 24 h with radionuclides and subsequently grown hydroponically for several weeks. • 54 Mn, 63 Ni and 65 Zn were transported via the xylem to the shoot. 63 Ni and 65 Zn were redistributed afterwards via the phloem from older to younger leaves, while 54 Mn remained in the oldest leaves. A strong retention in the root was observed for 57 Co and 109 Cd. • Cluster roots contained higher concentrations of all heavy metals than noncluster roots. Concentrations were generally higher at the beginning of cluster root development (juvenile and immature stages). Mature cluster roots also contained high levels of 54 Mn and 57 Co, but only reduced concentrations of 63 Ni, 65 Zn and 109 Cd.