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| Accumulation, Translocation and Subcellular Distribution of Vanadium in Lycium barbarum Seedling |
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| KeyWord:vanadium; Lycium barbarum seedling; accumulation; translocation; subcellular distribution |
| Author Name | Affiliation | | HOU Ming | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology | | HU Cun-jie | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology | | XIONG Ling | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology | | CHEN Ru | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology |
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| Abstract: |
| Accumulation, translocation and subcellular distribution of Vanadium（V） in Lycium barbarum seedling was investigated with sand culture by the differential centrifugation. Results showed that allocation proportions and concentrations of V in different organs of Lycium barbarum seedling were in sequence as follows：root>petiole>leaf. With V press level increasing, concentrations and allocation proportions of V in root increased significantly, and reached to the maximum，19.80 μg·g-1 and 60.1% respectively when V press level was 20 mg·L-1. The bioconcentration factor（BCF） and the translocation factor（TF） for V was more than 1 and less than 1 respectively when V press level was 2 mg·L-1 or 5 mg·L-1. It suggested that there is a strong enrichment and low translocation in Lycium barbarum seedling, while most V is accumulated in roots, which can reduce the toxicity of V to petioles and leaves. The subcellular distribution level of V in the leaves of Lycium barbarum seedling was in sequence as follows：F1（cell wall and residue）>F4（soluble fraction）>F2（nucleus）>F3（mitochondrion and chloroplasts）. The allocation proportions of V in F1 and F4 were 28.3%~52.4% and 4.1%~45.2% respectively, indicating that cell wall is the main V-biding site in leaves of Lycium barbarum seedling. With V press level increasing, the allocation proportions of V decreased in cell wall, nucleus, mitochondrion and chloroplasts, but increased in soluble fraction, suggesting that intercoordination between cell wall and soluble fraction may benefit the tolerance of Lycium barbarum seedling to V. |
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