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Accumulation of Heavy Metals in Cell Walls of Polygonum cuspidatum Roots from Metalliferous Habitats

Accumulation of Heavy Metals in Cell Walls of Polygonum cuspidatum Roots from Metalliferous Habitats Abstract The distribution and accumulation of Cu2+, Zn2+ and Cd2+ ions in the roots of Polygonum cuspidatum, collected from metalliferous and non-metalliferous habitats, were examined. About 90% of the metal ions was located in the cell wall fraction of roots of plants grown in either type of habitat. The metal-ion exchange capacity of the cell walls is not specific to the plants from metalliferous habitats, and there were no significant differences among plants from the various habitats. The capacity for Cu2+ ions was greater than that for Zn2+ or Cd2+ ions. Cu2+ ions have a high affinity for the cell wall and, thus, it appears that the cell wall is a barrier for the transportation of Cu2+ into the cytoplasm. This content is only available as a PDF. © 1989 The Japanese Society of Plant Physiologists (JSPP) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant and Cell Physiology Oxford University Press

Accumulation of Heavy Metals in Cell Walls of Polygonum cuspidatum Roots from Metalliferous Habitats

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Publisher
Oxford University Press
Copyright
© 1989 The Japanese Society of Plant Physiologists (JSPP)
ISSN
0032-0781
eISSN
1471-9053
DOI
10.1093/oxfordjournals.pcp.a077780
Publisher site
See Article on Publisher Site

Abstract

Abstract The distribution and accumulation of Cu2+, Zn2+ and Cd2+ ions in the roots of Polygonum cuspidatum, collected from metalliferous and non-metalliferous habitats, were examined. About 90% of the metal ions was located in the cell wall fraction of roots of plants grown in either type of habitat. The metal-ion exchange capacity of the cell walls is not specific to the plants from metalliferous habitats, and there were no significant differences among plants from the various habitats. The capacity for Cu2+ ions was greater than that for Zn2+ or Cd2+ ions. Cu2+ ions have a high affinity for the cell wall and, thus, it appears that the cell wall is a barrier for the transportation of Cu2+ into the cytoplasm. This content is only available as a PDF. © 1989 The Japanese Society of Plant Physiologists (JSPP)

Journal

Plant and Cell Physiology – Oxford University Press

Published: Jun 1, 1989

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