Cited by 71Plant Micronutrient Interactions and EffectsHeavy Metals in PlantsHeavy metals in environment

A proteomics approach to investigate the process of Z n hyperaccumulation in N occaea caerulescens ( J & C . P resl) F . K . M eyer

Open access
Schneider, Thomas, Persson, Daniel Pergament, Husted, Søren, Schellenberg, Maja, Gehrig, Peter, Lee, Youngsook, Martinoia, Enrico, Schjoerring, Jan K. +1 more·2013·The Plant Journal

Abstract

Summary: Zinc ( Z n) is an essential trace element in all living organisms, but is toxic in excess. Several plant species are able to accumulate Z n at extraordinarily high concentrations in the leaf epidermis without showing any toxicity symptoms. However, the molecular mechanisms of this phenomenon are still poorly understood. A state‐of‐the‐art quantitative 2 D liquid chromatography/tandem mass spectrometry (2 D ‐ LC ‐ MS / MS ) proteomics approach was used to investigate the abundance of proteins involved in Z n hyperaccumulation in leaf epidermal and mesophyll tissues of N occaea caerulescens . Furthermore, the Z n speciation in planta was analyzed by a size‐exclusion chromatography/inductively coupled plasma mass spectrometer ( SEC ‐ ICP ‐ MS ) method, in order to identify the Z n‐binding ligands and mechanisms responsible for Z n hyperaccumulation. Epidermal cells have an increased capability to cope with the oxidative stress that results from excess Z n, as indicated by a higher abundance of glutathione S ‐transferase proteins. A Z n importer of the ZIP family was more abundant in the epidermal tissue than in the mesophyll tissue, but the vacuolar Z n transporter MTP 1 was equally distributed. Almost all of the Z n located in the mesophyll was stored as Z n–nicotianamine complexes. In contrast, a much lower proportion of the Z n was found as Z n–nicotianamine complexes in the epidermis. However, these cells have higher concentrations of malate and citrate, and these organic acids are probably responsible for complexation of most epidermal Z n. Here we provide evidence for a cell type‐specific adaptation to excess Z n conditions and an increased ability to transport Z n into the epidermal vacuoles.

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.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/tpj.12022

Cites

90 of 90 references verified0 citation errors · 0 not checkable

Statistics

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.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The hyperaccumulation of metal ions is directly related to a higher number of ZIP transporters in the plasma membrane of leaf epidermal cells and transpiration termination in these cells.

    “The hyperaccumulation of metal ions is directly related to a higher number of ZIP transporters in the plasma membrane of leaf epidermal cells and transpiration termination in these cells (Küpper et al., 2009; Schneider et al., 2013).”

    From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as Schneider et al., 2013

    In “Transport of Zn in the epidermal tissue” (p. 5), the paper reports an epidermal plasma-membrane protein resembling a ZIP transporter that was not detected in the mesophyll, and suggests it likely helps leaf cells take up Zn. It does not establish a direct causal relationship between ZIP abundance and metal hyperaccumulation, or say that transpiration terminates in epidermal cells; the Introduction (p. 2) instead describes root-to-shoot transport along the transpiration stream. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Schneider, T., Persson, D. P., Husted, S., Schellenberg, M., Gehrig, P., Lee, Y., Martinoia, E., Schjoerring, J. K., & Meyer, S.
Affiliations
  • University of Zurich (CH)
  • University of Copenhagen (DK)
  • Department of Plant and Environmental Sciences Faculty of Science University of Copenhagen Thorvaldsensvej 40 DK‐1871 Frederiksberg C Copenhagen Denmark
  • ETH Zurich (CH)
  • Pohang University of Science and Technology (KR)
Corresponding author
  • Schneider, Thomas
  • Schjoerring, Jan K.
Venue
The Plant Journal
Publisher
Wiley
Published
2012-10-26
Volume
73
Issue
1
Pages
131-142
ISSN
  • 0960-7412 (ISSN-L)
  • 1365-313X
OpenAlex
W2115231532
Cited by
71
References
90
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 7 · 2019: 4 · 2018: 10 · 2017: 2 · 2016: 12 · 2015: 4 · 2014: 6 · 2013: 6 · 2012: 1
FWCI
6.22
Type
journal article
Language
en
Open access
Locations
  • The Plant Journal (publishedVersion)
  • PubMed (publishedVersion)
  • Open Access System for Information Sharing (Pohang University of Science and Technology) (submittedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
Funders
  • COST Fellowship (C08.0138)
  • Danish Ministry of Science, Innovation and Higher Education (DSF-10-093498-NUTRIEFFICIENT, FTP-10-100087, FTP-10-082111-Sapere Aude)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
  • Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
Keywords
zinc hyperaccumulation, Noccaea caerulescens, leaf epidermis, mesophyll, zinc speciation, glutathione S-transferase, vacuolar sequestration, oxidative stress, plant metal tolerance
MeSH terms
Gas Chromatography-Mass Spectrometry, Plant Proteins, Zinc, Plant Leaves, Plant Epidermis, Brassicaceae, Proteomics, Mesophyll Cells

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