Zinc and cadmium accumulation and tolerance in populations of Sedum alfredii

D. M. DENG, W. S. SHU, J. ZHANG, H. L. ZOU, Z. LIN, Z. H. YE, Ming Hung WONG

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Abstract

To investigate the variation of Zn and Cd accumulation and tolerance of Sedum alfredii (a newly reported Zn/Cd hyperaccumulator), field surveys and hydroponic experiments were conducted among three populations of this species: two originating from old Pb/Zn mines in Zhejiang (ZJ) and Hunan (HN) Provinces and one from a "clean" site in Guangdong (GD) Province, China. Under field conditions, up to 12,524 and 12,253 mg kg⁻¹ Zn, and 1400 and 97 mg kg⁻¹ Cd in shoots of ZJ and HN plants were recorded respectively. Under hydroponic conditions, ZJ and HN plants accumulated significantly higher Zn and Cd in their leaves and stems, and possessed significantly higher Zn and Cd tolerance than GD plants. Among the two contaminated populations, ZJ plants showed higher Cd tolerance and accumulation (in leaves) than HN plants. The present results indicate that significant differences in Zn and Cd accumulation and tolerance exist in populations of S. alfredii. Copyright © 2006 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)381-386
JournalEnvironmental Pollution
Volume147
Issue number2
DOIs
Publication statusPublished - May 2007

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Sedum
Cadmium
Zinc
Hydroponics
Population
Plant Leaves
China
Experiments

Citation

Deng, D. M., Shu, W. S., Zhang, J., Zou, H. L., Lin, Z., Ye, Z. H., & Wong, M. H. (2007). Zinc and cadmium accumulation and tolerance in populations of Sedum alfredii. Environmental Pollution, 147(2), 381-386. doi: 10.1016/j.envpol.2006.05.024

Keywords

  • Cadmium
  • Hyperaccumulator
  • Populations
  • Sedum alfredii Hance
  • Zinc