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Subcellular localization of Cd in the root cells ofAllium sativum by electron energy loss spectroscopy

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Abstract

The ultrastructural investigation of the root cells ofAllium sativum L. exposed to three different concentrations of Cd (100 (AM, 1 μM and 10 mM) for 9 days was carried out. The results showed that Cd induced several significant ultrastructural changes — high vacuolization in cytoplasm, deposition of electron-dense material in vacuoles and nucleoli and increment of disintegrated organelles. Data from electron energy loss spectroscopy (EELS) revealed that Cd was localized in the electron-dense precipitates in the root cells treated with 10 mM Cd. High amounts of Cd were mainly accumulated in the vacuoles and nucleoli of cortical cells in differentiating and mature root tissues. The mechanisms of detoxification and tolerance of Cd are briefly explained.

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Authors and Affiliations

  1. Department of Biology, College of Chemistry and Life Sciences, Tianjin Normal University, 300074, Tianjin, People’s Republic of China

    Donghua Liu

  2. Botanisches Institut, Eberhard-Karls-Universität Tübingen, Spezielle Botanik, Mykologie, Auf der Morgenstelle 1, D-72076, Tübingen, Germany

    Donghua Liu & Ingrid Kottke

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  1. Donghua Liu
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  2. Ingrid Kottke
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Liu, D., Kottke, I. Subcellular localization of Cd in the root cells ofAllium sativum by electron energy loss spectroscopy. J Biosci 28, 471–478 (2003). https://doi.org/10.1007/BF02705121

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  • DOI: https://doi.org/10.1007/BF02705121

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