Genotypic variation in the uptake, accumulation, and translocation of di-(2-ethylhexyl) phthalate by twenty cultivars of rice (Oryza sativa L.)

Ecotoxicology and Environmental Safety
Quanying CaiCehui Mo

Abstract

Agricultural soil in China contains high levels of di-(2-ethylhexyl) phthalate (DEHP), especially in paddy-field soil of Guangdong province of China, but the accumulation and translocation of DEHP by rice (Oryza sativa L.) remains unknown. In the present study, twenty rice cultivars were cultivated in paddy soil spiked with DEHP, and variations in DEHP accumulation and translocation among various cultivars were investigated. Our results showed that DEHP concentrations in roots and shoots of different rice cultivars at four growth stages (i.e., ripening, tillering, jointing, and flowering stages) varied greatly from 0.26 to 11.8 mg/kg (dry weight, dw) and 0.40 to 7.58 mg/kg (dw), respectively. No obvious change over time was observed. The greatest variation in DEHP concentrations among the rice cultivars occurred at ripening stage, whereas the lowest variation at flowering stage. During ripening stage, the largest variation in DEHP concentrations among cultivars were observed in stems (varying from 0.35 to 13.2 mg/kg), whereas the least one was observed in roots (ranging from 1.01 to 5.72 mg/kg). Significant differences in DEHP concentrations in the roots, stems, leaves and grains of most rice cultivars were found. The transloca...Continue Reading

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Citations

Jul 8, 2017·Environmental Science and Pollution Research International·He WangDa-Wen Gao
Sep 7, 2020·The Science of the Total Environment·Yuan ChenJinhui Li
May 16, 2020·The Science of the Total Environment·Wenjie RenYing Teng
Jan 31, 2021·Environmental Science and Pollution Research International·Yingying SunZhaohui Wang
Apr 9, 2019·Journal of Agricultural and Food Chemistry·Lei XiangQing X Li
Dec 10, 2019·Journal of Agricultural and Food Chemistry·Yi ZhaoJin-Long Li

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