Phytotoxicity of lanthanum in rice in haplic acrisols and cambisols.

  title={Phytotoxicity of lanthanum in rice in haplic acrisols and cambisols.},
  author={Qing Ning Zeng and Jian-guo Zhu and Hoi Lun Cheng and Zhigang Xie and Hai Chu},
  journal={Ecotoxicology and environmental safety},
  volume={64 2},
Growth and physiological responses of rice to lanthanum were studied to elucidate the function of lanthanum in plants and its critical concentration relative to environmental safety. Shoot La content increased with the increasing added La concentrations. When shoot La content exceeded a toxic value, plant growth and chlorophyll a/b decreased and peroxidase (POD) activity, cell membrane permeability, and content of proline in the leaf increased. Leaf chlorophyll a/b and POD activity might… CONTINUE READING