The DOI matches its Crossref record.
Hyperaccumulation of arsenic in the shoots of Arabidopsis silenced for arsenate reductase (ACR2)
Abstract
Endogenous plant arsenate reductase (ACR) activity converts arsenate to arsenite in roots, immobilizing arsenic below ground. By blocking this activity, we hoped to construct plants that would mobilize more arsenate aboveground. We have identified a single gene in the Arabidopsis thaliana genome, ACR2 , with moderate sequence homology to yeast arsenate reductase. Expression of ACR2 cDNA in Escherichia coli complemented the arsenate-resistant and arsenate-sensitive phenotypes of various bacterial ars operon mutants. RNA interference reduced ACR2 protein expression in Arabidopsis to as low as 2% of wild-type levels. The various knockdown plant lines were more sensitive to high concentrations of arsenate, but not arsenite, than wild type. The knockdown lines accumulated 10- to 16-fold more arsenic in shoots (350–500 ppm) and retained less arsenic in roots than wild type, when grown on arsenate medium with <8 ppm arsenic. Reducing expression of ACR2 homologs in tree, shrub, and grass species should play a vital role in the phytoremediation of environmental arsenic contamination.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Zhao, F.-J., McGrath, S. P., & Meharg, A. A. (2010) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-042809-112152 · Cited by 1,246
Arsenic uptake and metabolism in plants
Zhao, F. J., Ma, J. F., Meharg, A. A., & McGrath, S. P. (2009) · New Phytologist · doi:10.1111/j.1469-8137.2008.02716.x · Cited by 1,185
The biochemistry of environmental heavy metal uptake by plants: implications for the food chain.
Peralta-Videa, J. R., Lopez, M. L., Narayan, M., Saupe, G., & Gardea-Torresdey, J. (2009) · The International Journal of Biochemistry & Cell Biology · doi:10.1016/j.biocel.2009.03.005 · Cited by 926
Zhang, L., Jing, F., Li, F., Li, M., Wang, Y., Wang, G., Sun, X., & Tang, K. (2009) · Biotechnology and Applied Biochemistry · doi:10.1042/ba20080068 · Cited by 206
Physiological and molecular mechanisms of metal accumulation in hyperaccumulator plants
Sytar, O., Ghosh, S., Malinska, H., Zivcak, M., & Brestic, M. (2020) · Physiologia Plantarum · doi:10.1111/ppl.13285 · Cited by 192
Metadata
- Authors
- Dhankher, O. P., Rosen, B. P., McKinney, E. C., & Meagher, R. B.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2006-04-04
- Volume
- 103
- Issue
- 14
- Pages
- 5413-5418
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2109776249
- Cited by
- 258
- References
- 0
- FWCI
- 11.74
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Hyperaccumulation of arsenic in the shoots of Arabidopsis silenced for arsenate reductase (ACR2). https://app.cochat.ai/papers/10.1073/pnas.0509770102
- The paper
- Dhankher, O. P., Rosen, B. P., McKinney, E. C., & Meagher, R. B. (2006). Hyperaccumulation of arsenic in the shoots of Arabidopsis silenced for arsenate reductase (ACR2). Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0509770102
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
