Plant Channels for Arsenic Transport
Author Information
Author(s): Gerd P. Bienert, Michael Thorsen, Manuela D. Schüssler, Henrik R. Nilsson, Annemarie Wagner, Markus J. Tamás, Thomas P. Jahn
Primary Institution: University of Copenhagen
Hypothesis
Nodulin26-like Intrinsic Proteins (NIPs) may function as arsenite transporters in plants.
Conclusion
The study identifies specific plant aquaporins that facilitate the transport of arsenite and antimonite across cell membranes.
Supporting Evidence
- NIPs from Arabidopsis thaliana and Oryza sativa were shown to be bi-directional As(III) channels.
- Expression of specific NIPs improved yeast growth on medium containing As(V).
- NIPs can discriminate between similar substrates and may have different transport preferences.
Takeaway
Some plants have special channels that help them move harmful substances like arsenic in and out of their cells, which could help make safer crops.
Methodology
The study involved cloning various NIP isoforms from different plant species and expressing them in yeast to test their ability to transport arsenite and antimonite.
Limitations
The study primarily used yeast as a model system, which may not fully replicate plant physiology.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website