Effects of anion channel blockers on xylem nitrate transport in barley seedlings

Abstract

Taxonomic characteristics in accumulating Co and Ni was investigated with 60 plant species (37 genera, 27 families) grown on granite derived soils containing slightly low level of available Co. Considerable variations in Co and Ni content were observed among plant !species with small differences with regard to sampling sites. Exceptionally high Co content (25 ppm on D.W. basis) was found in the leaves of Clethra barbinervis. The value was about 48 times higher than the lowest Co content species. Reasonably high Co content was found with some species in genera: Hydrangea and Viburunum. Ni was highly accumulated in the leaves of Sasa borealis (16 ppm) and in fruits of Clethra barbinervis (65 ppm). Other Nirich species were especially found in genera: Struthiopteris, Hydrangea, Stewartia, Clethra, and Symplocos. High positive correlation (P<0.01) was found between the concentration of Co and Ni in plant species.