Transport of cadmium via xylem and phloem in maturing wheat shoots: Comparison with the translocation of zinc, strontium and rubidium

Herren, Thomas; Feller, Urs (1997). Transport of cadmium via xylem and phloem in maturing wheat shoots: Comparison with the translocation of zinc, strontium and rubidium. Annals of Botany, 80(5), pp. 623-628. Oxford University Press 10.1006/anbo.1997.0492

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The toxic heavy metal cadmium is taken up by plants and may contaminate harvested parts of agricultural crops. In the experiments reported here, cadmium was introduced together with markers for phloem (rubidium) and xylem (strontium) transport, either into intact shoots via a flap below the flag leaf node, or into detached shoots via the cut stem. Cadmium introduced into intact plants was redistributed during maturation from the peduncle and the flag leaf lamina to the grain. In detached shoots, some cadmium was removed from the transpiration stream, as judged from the comparison of shoots steam-girdled below the ear and of controls with an intact phloem in the peduncle. A minor quantity of cadmium was transported to the grain via the phloem in control shoots while a high percentage of this element was retained in the peduncle. The cadmium content of the grain increased in response to the increased cadmium concentrations in the feeding solutions (0.1 to 10 mu M). The cadmium content of the grain was slightly lower when zinc (> 10 mu M) was introduced al the same time as cadmium (1 mu M). (C) 1995 Annals of Botany Company.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant nutrition [discontinued]
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Feller, Urs

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0305-7364

Publisher:

Oxford University Press

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

07 Mar 2017 08:36

Last Modified:

23 Oct 2019 03:59

Publisher DOI:

10.1006/anbo.1997.0492

Uncontrolled Keywords:

Triticum aestivum L., cadmium, phloem transport, wheat, zinc

BORIS DOI:

10.7892/boris.91873

URI:

https://boris.unibe.ch/id/eprint/91873

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