Pedosphere 27(3): 421--438, 2017
ISSN 1002-0160/CN 32-1315/P
©2017 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Morphological and physiological responses of plants to cadmium toxicity: A review
HE Shanying1, YANG Xiaoe2, Zhenli HE3,Virupax C. BALIGAR4
1College of Environmental Science and Engineering, Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Gongshang University, Hangzhou 310012 (China)
2 Ministry of Education Key Laboratory of Environment Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058 (China)
3 Indian River Research and Education Center, Institute of Food and Agricultural Sciences (IFAS), University of Florida, Fort Pierce FL 34945 (USA)
4 USDA-ARS, Beltsville Agricultural Research Center, Beltsville MD 20705 (USA)
ABSTRACT
      Cadmium (Cd) contamination has posed an increasing challenge to environmental quality and food security.In recent years, phytoremediation has been particularly scrutinized because it is cost-effective and environmentally friendly, especially the use of metal-hyperaccumulating plants to extract or mine heavy metals from polluted soils. Under Cd stress, responses of hyperaccumulator and non-hyperaccumulator plants differ in morphological responses and physiological processes such as photosynthesis and respiration, uptake, transport, and assimilation of minerals and nitrogen, and water uptake and transport, which contribute to their ability to accumulate and detoxify Cd.This review aims to provide a brief overview of the recent progresses in the differential responses of hyperaccumulator and non-accumulator plants to Cd toxicity in terms of growth and physiological processes. Such information might be useful in developing phytoremediation technology for contaminated soils.
Key Words:  heavy metal, hyperaccumulator, metal accumulation, mineral elements, photosynthesis, phytoremediation, water transport, water uptake
Citation: He, S. Y., Yang, X., Zhenli, H. and Baligar, C. 2017. Morphological and physiological responses of plants to cadmium toxicity: A review. Pedosphere. 27(3): 421-438.
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