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Effect of Fe2+, Mn2+, Zn2+ and Pb2+ on H+/K+ fluxes in excisedPistia stratiotes roots

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Biologia Plantarum

Abstract

Pistia stratiotes is used for the epuration of domestic sewage in the Biyem Assi phytopurification station. During the process, Fe2+, Mn2+, Zn2+ and Pb2+ are absorbed in substantial amounts by the plant. These metals modify the H+/K+ exchange system at the root level. H+ efflux is inhibited by Fe2+ and by Zn2+ and enhanced by Mn2+ and Pb2+. K+ influx is inhibited by Fe2+, by Zn2+ and by Pb2+ and enhanced by Mn2+. It is shown that the purification capacity ofPistia stratiotes can vary with the composition of the heavy metals in the surrounding medium.

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Authors and Affiliations

  1. Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon

    G. Tsala Ndzomo, D. Omokolo Ndoumou & M. Tita Awah

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  1. G. Tsala Ndzomo
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  2. D. Omokolo Ndoumou
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  3. M. Tita Awah
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Ndzomo, G.T., Ndoumou, D.O. & Awah, M.T. Effect of Fe2+, Mn2+, Zn2+ and Pb2+ on H+/K+ fluxes in excisedPistia stratiotes roots. Biol Plant 36, 591–597 (1994). https://doi.org/10.1007/BF02921185

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  • DOI: https://doi.org/10.1007/BF02921185

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