Cultivar-dependent accumulation and translocation of perfluorooctanesulfonate among lettuce (Lactuca sativa L.) cultivars grown on perfluorooctanesulfonate-contaminated soil

Peng-Fei YU, Lei XIANG, Xin-Hong LI, Zi-Rong DING, Ce-Hui MO, Yan-Wen LI, Hui LI, Quan-Ying CAI, Dong-Mei ZHOU, Ming Hung WONG

Research output: Contribution to journalArticles

6 Citations (Scopus)

Abstract

Perfluorooctanesulfonate (PFOS) is a toxic and persistent organic pollutant that can be widely detected in agricultural soils. In this study, two lettuce cultivars with low PFOS accumulation were screened out to reduce the exposure of PFOS to the human body via vegetable consumption. The screened low-PFOS cultivars may help to ensure food safety, despite planting in highly PFOS-polluted soils (1.0 mg/kg), due to their high tolerance to PFOS and 4.4–5.7 times lower shoot PFOS concentration than the high-PFOS cultivars. Protein content and protein-mediated transpiration played key roles in regulating PFOS accumulation in the lettuce cultivars tested. Lower protein content, lower stomatal conductance, and lower transpiration rate resulted in low PFOS accumulation. This study reveals the mechanism of forming low-PFOS accumulation of lettuce cultivars at physiological and biochemical levels and lays a foundation for developing a cost-effective and safe approach to grow vegetables in PFOS-polluted soils. Copyright © 2018 American Chemical Society.
Original languageEnglish
Pages (from-to)13096-13106
JournalJournal of Agricultural and Food Chemistry
Volume66
Issue number50
Early online dateNov 2018
DOIs
Publication statusPublished - 2018

Citation

Yu, P.-F., Xiang, L., Li, X.-H., Ding, Z.-R., Mo, C.-H., Li, Y.-W., . . . Wong, M.-H. (2018). Cultivar-dependent accumulation and translocation of perfluorooctanesulfonate among lettuce (Lactuca sativa L.) cultivars grown on perfluorooctanesulfonate-contaminated soil. Journal of Agricultural and Food Chemistry, 66(50), 13096-13106. doi: 10.1021/acs.jafc.8b04548

Keywords

  • Cultivar variation
  • Lettuce (Lactuca sativa L.)
  • Low-PFOS accumulator
  • Perfluorooctanesulfonate (PFOS)
  • Protein
  • Transpiration

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