A long way ahead: understanding and engineering plant metal accumulation
Abstract
Some plants can hyperaccumulate metal ions that are toxic to virtually all other organisms at low dosages. This trait could be used to clean up metal-contaminated soils. Moreover, the accumulation of heavy metals by plants determines both the micronutrient content and the toxic metal content of our food. Complex interactions of transport and chelating activities control the rates of metal uptake and storage. In recent years, several key steps have been identified at the molecular level, enabling us to initiate transgenic approaches to engineer the transition metal content of plants.
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Hyperaccumulators employ at least four mechanisms to accumulate metal ions: transport of metals through roots from the soil, radial metal ion transport in roots, root-to-shoot metal accumulation, and detoxification at storage sites.
“They employ at least four mechanisms to accumulate metal ions, viz. transport of metals through roots from the soil, radial metal ion transport in roots, root to shoot metal accumulation, and detoxification at storage sites (Clemens, 2001; Clemens et al., 2002; Mari and Lebrun, 2005; Merlot et al., 2018; Corso and de la Torre, 2020).”
From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as Clemens et al., 2002
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- Authors
- Clemens, S., Palmgren, M. G., & Krämer, U.
- Affiliations
- Leibniz Institute of Plant Biochemistry (DE)
- Max Planck Institute of Molecular Plant Physiology (DE)
- Corresponding author
- Clemens, Stephan
- Venue
- Trends in Plant Science
- Publisher
- Elsevier BV
- Published
- 2002-07
- Volume
- 7
- Issue
- 7
- Pages
- 309-315
- ISSN
- 1360-1385 (ISSN-L)
- OpenAlex
- W1991564945
- Cited by
- 1,265
- References
- 66
- Citations by year
- 2026: 17 · 2025: 37 · 2024: 45 · 2023: 48 · 2022: 44 · 2021: 60 · 2020: 76 · 2019: 69 · 2018: 65 · 2017: 54 · 2016: 71 · 2015: 60 · 2014: 60 · 2013: 75 · 2012: 57
- FWCI
- 3.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Trends in Plant Science (publishedVersion)
- PubMed (publishedVersion)
- Max Planck Institute for Plasma Physics (submittedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
- Keywords
- hyperaccumulation, heavy metal accumulation, metal-contaminated soil remediation, phytoremediation, metal transport, metal chelation, micronutrient content, transgenic plants, metal homeostasis
- MeSH terms
- Biodegradation, Environmental, Biological Transport, Environmental Pollution, Genetic Engineering, Plants, Metals, Heavy, Plants, Genetically Modified
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