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Cadmium Accumulation and Tolerance in Seven Ornamental Willow Genotypes

  • Weidong Yang
  • Feifei Wu
  • Zheli Ding
  • Xincheng Zhang
  • Fengliang Zhao
  • Yuyan Wang
  • Xiaoe YangEmail author
Article

Abstract

Cadmium (Cd) accumulation and tolerance in seven ornamental willow genotypes were investigated at different Cd levels (0, 5, 25, 50, and 100 µM) through hydroponic culture in a greenhouse. Severe phytotoxic symptoms in leaves and roots including leaf chlorosis and root browning were noticed when grown at ≥ 50 µM Cd. All genotypes showed high tolerance to low Cd levels (5 µM and 25 µM Cd), in contrast to high Cd levels (i.e. 50 µM and 100 µM) that severely disturbed plant growth of all genotypes. Cadmium concentrations reached 165.0–1251.0 µg g−1 DW in leaves, 22.9–331.2 µg g−1 in stems among the genotypes at 5–25 µM Cd, and Cd mainly accumulated in the roots. Although willow tissues can accumulate relatively high Cd concentrations under high Cd levels (≥ 50 µM), they are not suitable for phytoextraction of Cd due to poor growth.

Keyword

Salix genotypes Cadmium Hydroponic culture Phytoremediation 

Notes

Acknowledgements

This work was funded by the Natural Science Foundation of China (Grant No. 31100513), the Key International Cooperative Project of CN-USA (Grant No. 2010DFB33960), the Key Project of Ningbo Science and Technology Bureau of Zhejiang Province (Grant No. 2012C10003), the Key project of Ministry of Science and Technology of China (Grant No. 2012BAC17B02) and the Fundamental Research Funds for the Central Universities. We are thankful to Zhang Huaxian for her excellent technical assistance.

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource SciencesZhejiang UniversityHangzhouChina
  2. 2.Haikou Experimental StationChinese Academy of Tropical Agricultural Sciences (CATAS)HaikouChina
  3. 3.Ministry of Agriculture Danzhou Scientific Observing and Experimental Station of Agro-Environment, Environment and Plant Protection InstituteChinese Academy of Tropical Agricultural Sciences (CATAS)HaikouChina
  4. 4.College of Agricultural Economy and TechnologyJiujiang Vocational UniversityJiujiangChina

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