Variations in phthalate ester (PAE) accumulation and their formation mechanism in Chinese flowering cabbage (Brassica parachinensis L.) cultivars grown on PAE-contaminated soils.
Variations in phthalate ester (PAE) accumulation and their formation mechanism in Chinese flowering cabbage (Brassica parachinensis L.) cultivars grown on PAE-contaminated soils.
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DOI：
10.1016/j.envpol.2015.06.008
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发表时间：
2015-11
影响因子：
8.9
通讯作者：
Hai-Ming Zhao;Huan Du;L. Xiang;Yi-Liang Chen;Lei Lu;Yan-Wen Li;Hui Li;Q. Cai;C. Mo
中科院分区：
文献类型：
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作者：
Hai-Ming Zhao;Huan Du;L. Xiang;Yi-Liang Chen;Lei Lu;Yan-Wen Li;Hui Li;Q. Cai;C. Mo
邻苯二甲酸酯（PAE）在作物中的积累给人类健康带来了巨大的风险，引起了人们的高度关注。本文研究了不同白菜品种邻苯二甲酸二丁酯（DBP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）积累量的变化，并揭示了其变化机制。28个品种地上部PAE浓度差异显著（p< 0.05）。此外，各品种茎部DBP和DEHP浓度呈极显著正相关，表明它们可以被不同品种同时吸收。由于低pae积累体转运因子较低，其茎部PAEs浓度远低于高pae积累体的根部。此外，亚细胞分布表明，低PAE积累器的根细胞壁和细胞器的PAE浓度远高于茎。因此，较低的根向茎转移量和更多的PAEs在根细胞壁和细胞器中的积累可能是低pae积累物的主要形成机制。
Phthalate ester (PAE) accumulation in crops poses great risks to human health and has aroused great concern. Here, we investigated variations in di-n-butylphthalate (DBP) and di-(2-ethylhexyl) phthalate (DEHP) accumulation by various Chinese flowering cabbage cultivars and revealed their variation mechanism. There were significant differences (p< 0.05) in shoot PAE concentrations of 28 cultivars. Moreover, significant positive correlations between DBP and DEHP concentrations in shoots of all cultivars indicated that they could be taken up simultaneously by various cultivars. Due to the lower translocation factor of low-PAE accumulator, its shoot PAEs concentrations were much lower than root compared to high-PAE accumulator. Further, subcellular distribution showed that PAE concentrations of root cell walls and organelles were much higher than those of shoots in low-PAE accumulator. Therefore, lower translocation from root to shoot and more PAEs accumulating in cell walls and organelles of root might act as main formation mechanism of low-PAE accumulator.