期刊
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
卷 75, 期 4, 页码 705-710出版社
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.100833
关键词
bioconcentration factor; Cucurbita pepo; dioxin; hydroponics; polychlorinated biphenyl
类别
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [17208029]
- Grants-in-Aid for Scientific Research [17208029, 23241028] Funding Source: KAKEN
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.
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