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. 1981 Oct;68(4):835–839. doi: 10.1104/pp.68.4.835

Cadmium Distribution and Chemical Fate in Soybean Plants 1

Dominic A Cataldo 1, Thomas R Garland 1, Raymond E Wildung 1
PMCID: PMC425995  PMID: 16662008

Abstract

The distribution and chemical behavior of Cd2+ in tissues and its chemical form in xylem water of soybean plants (cv. Williams) were investigated. Following root absorption, Cd is strongly retained by roots, with only 2% of the accumulated Cd being transported to leaves; as much as 8% was transported to seeds during seed filling. In vivo xylem exudates contained two anionic Cd complexes in addition to inorganic forms of Cd. Once accumulated in root and leaf tissues, Cd rapidly equilibrated between the insoluble, soluble, and organelle fractions. Of the solubles, which contain 50% of the Cd, >50% was associated with components of >10,000 molecular weight, and <8% was associated with <500 molecular weight components. Cadmium accumulated in soybean seeds was primarily associated with cotyledons. Fractionation of seeds showed the soy proteinate and soy whey to contain 32 and 50% of the accumulated Cd, respectively.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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