Abstract
Elongation growth rate of stem cells of Impatiens balsamina was inhibited by the heavy metals Pb2+, Cd2+ and Zn2+ due to their suppression on cell wall extensibility. Effective turgor was also inhibited by Pb2+ and Cd2+ but it played a secondary role in reducing the stem cell elongation growth rate. The major rate-limiting factor for cell elongation growth was the cell wall extensibility. Furthermore, Cd2+ was found to be more toxic than Pb2+, while Pb2+ was more toxic than Zn2+.
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Aidid, S.B., Okamoto, H. Responses of elongation growth rate, turgor pressure and cell wall extensibility of stem cells of Impatiens balsamina to lead, cadmium and zinc. Biometals 6, 245–249 (1993). https://doi.org/10.1007/BF00187763
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DOI: https://doi.org/10.1007/BF00187763