title: Variation in accumulation and translocation of di-n-butyl phthalate (DBP) among rice (Oryza sativa L.) genotypes and selection of cultivars for low DBP exposure.
abstract: Di-n-butyl phthalate (DBP) is a typical endocrine-disrupting chemical with higher detection frequency and concentration in agricultural soil (particularly in paddy-field soil of Guangdong Province) of China. In this study, a greenhouse experiment was conducted to investigate variation in uptake and accumulation of DBP by 20 rice cultivars and to screen low DBP-accumulating cultivars. DBP concentrations in plants varied greatly with rice cultivars, growth stages, and tissues. The highest DBP concentrations in both roots and shoots were observed at the ripening stage, with concentrations 2-100-fold higher than those at tillering, jointing, and flowering stages. At the ripening stage, DBP concentrations decreased in the order of leaf > root > stem > grain, and significant differences of DBP concentrations were observed among various rice cultivars. Moreover, the magnitude of variation in DBP concentrations among various cultivars was greater in stems and grains than in roots and leaves. The translocation factors of DBP from roots to stems and from shoots to grains were <1.0, and those from stems to leaves were almost >1.0. Overall, cultivars Yuxiangyouzhan, Jinnongsimiao, Tianyou 122, and Wuyou 380 accumulated relatively lower DBP in grains, resulting in lower DBP exposure. The DBP uptake and translocation pathways in rice require further investigation. Graphical abstract ᅟ.
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Quan-Ying
authors.initials: QY
authors.lastname: Cai
authors.affiliation: Management School, Jinan University, Guangzhou, 510632, China.
authors.forename: Pei-Yun
authors.initials: PY
authors.lastname: Xiao
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Hai-Ming
authors.initials: HM
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Soil Environment and Waste Reuse in Agriculture of Guangdong Higher Education Institutions, College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China. huixiongl@scau.edu.cn.
authors.forename: Huixiong
authors.initials: H
authors.lastname: Lü
authors.affiliation: Key Laboratory of Soil Environment and Waste Reuse in Agriculture of Guangdong Higher Education Institutions, College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.
authors.forename: Qiao-Yun
authors.initials: QY
authors.lastname: Zeng
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Yan-Wen
authors.initials: YW
authors.lastname: Li
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xiang
authors.affiliation: Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, School of Environment, Jinan University, Guangzhou, 510632, China. tchmo@jnu.edu.cn.
authors.forename: Ce-Hui
authors.initials: CH
authors.lastname: Mo
mesh_terms: D003993:Dibutyl Phthalate / Q000032:analysis / Q000378:metabolism / Q000493:pharmacokinetics; D005838:Genotype; D012275:Oryza / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism / Q000493:pharmacokinetics
chemical_list: D012989:Soil Pollutants; D003993:Dibutyl Phthalate
keywords: Accumulation; Cultivar; Di-n-butyl phthalate; Rice; Translocation; Variation