5 years ago

The accumulation and fractionation of Rare Earth Elements in hydroponically grown Phytolacca americana L.

Ye-Tao Tang, Mei-Na Guo, Wen-Shen Liu, Xian-Ge Wei, Rong-Liang Qiu, Wan-Ying Zhao, Chang Liu, Jean Louis Morel, Antony van der Ent, Ming Yuan, Hermine Huot


Background and Aims

The widespread use of Rare Earth Elements (REEs) has resulted in localized soil pollution. Phytolacca americana L. has potential for REE phyto-extraction, but the related mechanism is not clear.


In this study, the uptake and fractionation of REEs, and the influence of REEs on biomass production was investigated in hydroponically grown plants. Furthermore, the effects of Ca2+ and Al3+ on REE uptake, and the role of organic acids in REE translocation were also examined.


Results showed that biomass and accumulation of REEs in P. americana were enhanced at low REE concentrations, but inhibited at higher concentrations in solution. Significant heavy REE (HREE) enrichment was observed during the stem-to-leaf transport, with a quotient of ∑LREE/∑HREE decreasing from 0.75 to 0.23. Ca2+ and Al3+ treatments diminished REE accumulation. The ∑LREE/∑HREE ratio decreased from 0.84 to 0.62 with increasing input of Ca2+, but increased from 0.83 to 0.92 with higher Al addition.


LREEs appear to enter into the root of P. americana through Ca2+ ion channels, whereas HREEs may share pathways with Al3+. Finally, citrate plays an important role in the translocation of REEs in P. americana.

Publisher URL: https://link.springer.com/article/10.1007/s11104-017-3426-3

DOI: 10.1007/s11104-017-3426-3

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.