| |
Publication Type:
| Refereed |
Author(s): | Jarvis, S. C.;
Jones, L. H. P.;
Hopper, M. J. |
Author Affiliation: | The Grassland Research Institute, Hurley, Berkshire, U.K. |
Title: | Cadmium uptake from solution by plants and its transport from roots to shoots |
Source: | Plant and Soil. Vol. 44, No. 1, February 1976, p. 179-191. |
Publishing Information: | Dordrecht, Netherland: Martinus Nijhoff Publishers |
Related Web URL: | http://link.springer.com/article/10.1007/BF00016965 Last checked: 10/14/2015 Notes: Abstract only |
Keywords: | TIC Keywords: Cadmium; Roots; Shoots; Lolium perenne
|
Abstract/Contents: | The uptake of cadmium by the roots of plants, and its transport to shoots was examined using solution culture. Uptake by the roots of perennial ryegrass over a period of 4 hours from an aqueous solution containing 0.25 ppm cadmium as CdCl2 was (1)enhanced by killing the roots and (2)depressed when Ca2+, Mn2+, or Zn2+ were added to the solution. The distribution of cadmium between the roots and shoots of 23 species was examined at 4 days after a single, 3-day exposure to a nutrient solution containing 0.01 ppm added Cd. In all except 3 species, I.e. kale, lettuce, andf watercress, more than 50 percent of that taken up was retained in the roots. The concentration in the roots was always greater than in the shoots, and in fibrous roots of fodder beet, parsnip, carrot and radish it was greater than in the swollen storage roots. When perennial ryegrass was similarly exposed to solutions containing 0.01, 0.05, and 0.25 ppm added cadmium, uptake, as measured at 3 days after adding cadmium, increased with increasing rates of addition, but the proportion retained in the roots was constant (approximately 88 percent). There was no further transport from roots to shoots during the next 21 days, with the result that the concentration in the shoots decreased progressively with increasing growth. It is concuded that although the roots of several species can take up large quantities of cadmium from solution there are mechanisms which may restrict the movement of cadmium through plants, and thus to animals. |
Language: | English |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Jarvis, S. C., L. H. P. Jones, and M. J. Hopper. 1976. Cadmium uptake from solution by plants and its transport from roots to shoots. Plant Soil. 44(1):p. 179-191. |
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