title: Variations in phthalate ester (PAE) accumulation and their formation mechanism in Chinese flowering cabbage (Brassica parachinensis L.) cultivars grown on PAE-contaminated soils.
abstract: 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.
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Hai-Ming
authors.initials: HM
authors.lastname: Zhao
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Du
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xiang
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Yi-Liang
authors.initials: YL
authors.lastname: Chen
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Lei-An
authors.initials: LA
authors.lastname: Lu
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Yan-Wen
authors.initials: YW
authors.lastname: Li
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China. Electronic address: yingqy@126.com.
authors.forename: Quan-Ying
authors.initials: QY
authors.lastname: Cai
authors.affiliation: School of Environment, Jinan University, Guangzhou 510632, China. Electronic address: tchmo@jnu.edu.cn.
authors.forename: Ce-Hui
authors.initials: CH
authors.lastname: Mo
mesh_terms: D001937:Brassica / Q000378:metabolism*; D018556:Crops, Agricultural / Q000378:metabolism; D003993:Dibutyl Phthalate / Q000032:analysis / Q000378:metabolism*; D004952:Esters; D006801:Humans; D010795:Phthalic Acids / Q000032:analysis / Q000378:metabolism*; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*
chemical_list: D004952:Esters; D010795:Phthalic Acids; D012987:Soil; D012989:Soil Pollutants; D003993:Dibutyl Phthalate; C032279:phthalic acid
keywords: Accumulation variations; Chinese flowering cabbage (Brassica parachinensis L.); Organic contamination; Phthalate esters; Pollution-safe cultivar