An arsenic‐accumulating, hypertolerant brassica, Isatis capadocica
Open accessAbstract
Isatis capadocica, a brassica collected from Iranian arsenic-contaminated mine spoils and control populations, was examined to determine arsenate tolerance, metabolism and accumulation. I. cappadocica exhibited arsenate hypertolerance in both mine and nonmine populations, actively growing at concentrations of > 1 mm arsenate in hydroponic solution. I. cappadocica had an ability to accumulate high concentrations of arsenic in its shoots, in excess of 100 mg kg(-1) DW, with a shoot : root transfer ratio of > 1. The ability to accumulate arsenic was exhibited in both hydroponics and contaminated soils. Tolerance in this species was not achieved through suppression of high-affinity phosphate/arsenate root transport, in contrast to other monocotyledons and dicotyledons. A high percentage (> 50%) of arsenic in the tissues was phytochelatin complexed; however, it is argued that this is a constitutive, rather than an adaptive, mechanism of tolerance.
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Two species of Brassicaceae also hyperaccumulate arsenic.
“Similarly, two species of Brassicaceae also hyperaccumulate arsenic (As) (Karimi et al., 2009).”
From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as Karimi et al., 2009
The Introduction (page unavailable) identifies two mustard species that can attain high shoot arsenic levels, and the paper reports arsenic accumulation in Isatis capadocica. It does not establish that two Brassicaceae species hyperaccumulate arsenic; the Discussion (page unavailable) cautions that a high reported concentration in one mustard may reflect necrotic plants. (LLM, conf=0.84)
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- Authors
- Karimi, N., Ghaderian, S. M., Raab, A., Feldmann, J., & Meharg, A. A.
- Affiliations
- University of Aberdeen (GB)
- University of Isfahan (IR)
- Venue
- New Phytologist
- Publisher
- Wiley
- Published
- 2009-07-27
- Volume
- 184
- Issue
- 1
- Pages
- 41-47
- ISSN
- 0028-646X (ISSN-L)
- 1469-8137
- OpenAlex
- W1523257741
- Cited by
- 107
- References
- 18
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 12 · 2020: 11 · 2019: 10 · 2018: 8 · 2017: 8 · 2016: 8 · 2015: 3 · 2014: 3 · 2013: 8 · 2012: 2
- FWCI
- 3.55
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- New Phytologist (publishedVersion, other-oa)
- PubMed (publishedVersion)
- Research Portal (Queen's University Belfast) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chromium effects and bioremediation
- Keywords
- arsenic accumulation, arsenate tolerance, hyperaccumulation, arsenate transport, phytochelatins, arsenic metabolism, Brassica
- MeSH terms
- Adaptation, Physiological, Arsenates, Arsenic, Kinetics, Soil, Time Factors, Arsenites, Plant Roots, Hydroponics, Biomass, Isatis
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