Congener Specificity in the Accumulation of Dioxins and Dioxin-Like Compounds in Zucchini Plants Grown Hydroponically
Congener Specificity in the Accumulation of Dioxins and Dioxin-Like Compounds in Zucchini Plants Grown Hydroponically
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DOI：
10.1271/bbb.100833
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发表时间：
2011-04
期刊：
影响因子：
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通讯作者：
Hideyuki Inui;Taketo Wakai;K. Gion;K. Yamazaki;Yun-Seok Kim;H. Eun
中科院分区：
文献类型：
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作者：
Hideyuki Inui;Taketo Wakai;K. Gion;K. Yamazaki;Yun-Seok Kim;H. Eun
西葫芦品种西葫芦亚种。卵黄囊线虫帕蒂·格林和亚斯皮人。佩波cv.淘金热是在添加了二恶英和二恶英类化合物混合物的营养液中进行水培培养的。Patty Green和Gold Rush分别在地上部分表现出较低和较高的积累。在两个品种中，各同系物的积累与其疏水性呈负相关。这表明，解吸和增溶作用在一定程度上是造成积累的同系物专一性的原因，因为在土壤实验中没有发现这一点。相反，不同品种在根中的积累没有明显的差异，而作为从根到地上部分有效运输的指标的运输因子在不同的同系物之间存在疏水性的差异。根中多氯联苯同系物的疏水性与根中的积累量呈正相关。这些结果表明，易位也是同源基因专一性和积累浓度的部分原因。
Zucchini cultivars Cucurbita pepo subsp. ovifera cv. Patty Green and subsp. pepo cv. Gold Rush were cultivated hydroponically in a nutrient solution supplemented with a mixture of dioxins and dioxin-like compounds. Patty Green and Gold Rush showed low and high accumulation of these compounds in the aerial parts respectively. In both cultivars, the accumulation of each congener negatively depended on its hydrophobicity. This suggests that desorption and solubilization were partly responsible for congener specificity of accumulation, since this was not found in soil experiments. In contrast, no clear difference in accumulation in the roots was observed between the cultivars, whereas the translocation factors, which are indicators of efficient translocation from the roots to the aerial parts, differed among the congeners hydrophobicity-dependently. There were positive correlations between accumulation in the roots and the hydrophobicity of the polychlorinated biphenyl congeners in both cultivars. These results indicate that translocation was also partly responsible for the congener specificity and accumulation concentrations.