Cited by 191Heavy Metals in PlantsHeavy metals in environmentPlant Micronutrient Interactions and Effects

Distribution of cadmium in leaves of Thlaspi caerulescens

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Cosio, C.·2005·Journal of Experimental Botany

Abstract

Knowledge of the intracellular distribution of Cd in leaves is necessary in order to understand the mechanisms of hyperaccumulation in Thlaspi caerulescens. Ganges and Prayon, two ecotypes accumulating Cd to different levels, were grown in nutrient medium containing varying concentrations (0, 5, 10, 50, and 100 microM) of Cd. Several different approaches were combined in this study to (i) validate the results obtained by a specific method and (ii) establish the link between observations and measurements performed at different scales. In both ecotypes, Cd, localized by autoradiography, was found mainly at the edges of the leaves, but also in points of higher concentration spread over the whole limb surface. This localization was clearly correlated with the necrotic spots observed on Prayon leaves. Scanning electron microscopy coupled with energy dispersive X-ray microanalysis (cryo-SEM-EDXMA) and tissue fractionation (apoplasm, cell walls, mesophyll protoplasts, and lower epidermis) showed that Cd had similar patterns of distribution in leaf cells of both ecotypes. Cadmium was found both inside the cells and in the cell walls, mainly in the large epidermal cells but also in small epidermal cells. All the methods used agreed well and the results indicated that metal storage in the plants studied involves more than one compartment and that Cd is stored principally in the less metabolically active parts of leaf cells.

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  • Several hyperaccumulator species have accumulated Cd, including A. halleri, B. juncea, Lactuca orientalis, N. caerulescens, Tragopogon collinus, and S. hohenackeriana.

    “Several hyperaccumulator species have accumulated Cd, including A. halleri, B. juncea, Lactuca orientalis Boiss., N. caerulescens, Tragopogon collinus DC., and S. hohenackeriana (Cosio et al., 2005; Küpper and Kochian, 2010; Moameri et al., 2017).”

    From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as Cosio et al., 2005

    The Introduction reports Cd accumulation in A. halleri and B. juncea, and Plant material and culture identifies a Cd-hyperaccumulating T. caerulescens ecotype. The paper does not establish Cd hyperaccumulation for every species in the cited list: it does not name Lactuca orientalis, Tragopogon collinus, S. hohenackeriana, or N. caerulescens, and it does not identify B. juncea as a hyperaccumulator. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Cadmium is accumulated in the edges of leaves, epidermal cells, cell walls, and metabolically less active parts of leaves in Noccaea caerulescens.

    “Cadmium is accumulated in the edges of leaves, epidermal cells, cell walls, and metabolically less active parts of leaves in Noccaea caerulescens (Cosio et al., 2005).”

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Research works printed but not linked: 1

  1. Christie WW. 2003. Lipid analysis, 3rd edn. Bridgwater: Oily Press.

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Authors
Cosio, C.
Affiliations
École Polytechnique Fédérale de Lausanne (CH)
Corresponding author
Cosio, C.
Venue
Journal of Experimental Botany
Published
2005-01-10
Volume
56
Issue
412
Pages
765-775
ISSN
  • 0022-0957 (ISSN-L)
  • 1460-2431
OpenAlex
W2153945507
Cited by
191
References
60
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 7 · 2021: 6 · 2020: 18 · 2019: 9 · 2018: 8 · 2017: 10 · 2016: 5 · 2015: 17 · 2014: 5 · 2013: 10 · 2012: 17
FWCI
11.50
Type
journal article
Language
en
Open access
Locations
  • Journal of Experimental Botany (publishedVersion)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion, other-oa)
  • reroDoc Digital Library (submittedVersion)
  • DORA WSL (Swiss Federal Institute for Forest, Snow and Landscape Research) (submittedVersion, other-oa)
  • HAL (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Topics
  • Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
Keywords
cadmium, Thlaspi caerulescens, hyperaccumulation, ecotypes, cell wall, epidermal cells, autoradiography, tissue fractionation
MeSH terms
Autoradiography, Cadmium, Cell Wall, Genotype, Plant Leaves, Thlaspi

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