Cited by 547Plant Micronutrient Interactions and EffectsTrace Elements in HealthPlant Molecular Biology Research

Large Expression Differences in Genes for Iron and Zinc Homeostasis, Stress Response, and Lignin Biosynthesis Distinguish Roots of Arabidopsis thaliana and the Related Metal Hyperaccumulator Thlaspi caerulescens

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van de Mortel, Judith E., Almar Villanueva, Laia, Schat, Henk, Kwekkeboom, Jeroen, Coughlan, Sean, Moerland, Perry D., Ver Loren van Themaat, Emiel, Koornneef, Maarten +1 more·2006·Plant Physiology

Abstract

The micronutrient zinc has an essential role in physiological and metabolic processes in plants as a cofactor or structural element in 300 catalytic and noncatalytic proteins, but it is very toxic when available in elevated amounts. Plants tightly regulate their internal zinc concentrations in a process called zinc homeostasis. The exceptional zinc hyperaccumulator species Thlaspi caerulescens can accumulate up to 3% of zinc, but also high amounts of nickel and cadmium, without any sign of toxicity. This should have drastic effects on the zinc homeostasis mechanism. We examined in detail the transcription profiles of roots of Arabidopsis thaliana and T. caerulescens plants grown under deficient, sufficient, and excess supply of zinc. A total of 608 zinc-responsive genes with at least a 3-fold difference in expression level were detected in A. thaliana and 352 in T. caerulescens in response to changes in zinc supply. Only 14% of these genes were also zinc responsive in A. thaliana. When comparing A. thaliana with T. caerulescens at each zinc exposure, more than 2,200 genes were significantly differentially expressed (≥5-fold and false discovery rate < 0.05). While a large fraction of these genes are of yet unknown function, many genes with a different expression between A. thaliana and T. caerulescens appear to function in metal homeostasis, in abiotic stress response, and in lignin biosynthesis. The high expression of lignin biosynthesis genes corresponds to the deposition of lignin in the endodermis, of which there are two layers in T. caerulescens roots and only one in A. thaliana.

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Crossref · 10.1104/pp.106.082073

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  • HMA4 encoding Cd and Zn metal ion transporter is overexpressed in the roots and shoots of both A. halleri and T. caerulescens metal ion hyperaccumulators.

    “Moreover, it is reported that HMA4 encoding Cd and Zn metal ion transporter is overexpressed in the roots and shoots of both A. halleri and T. caerulescens metal ion hyperaccumulators (Bernard et al., 2004; van de Mortel et al., 2006; Courbot et al., 2007).”

    From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as van de Mortel et al., 2006

    The Discussion (page not provided) reports higher HMA4 expression in T. caerulescens roots and cites higher expression in A. halleri without specifying tissue. The Semiquantitative Reverse Transcription-PCR section (page not provided) also reports TcHMA4 expression in leaves. Our copy does not establish higher HMA4 expression in both roots and shoots of A. halleri, or identify HMA4 as a cadmium transporter; it identifies HMA4 as a zinc transporter. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • FDR3 is another transporter belonging to the MATE (Multidrug and Toxin Efflux) gene family of transporters overexpressed in the root pericycle of A. halleri and T. caerulescens to hyperaccumulate Fe.

    “FDR3 is another transporter belonging to the MATE (Multidrug and Toxin Efflux) gene family of transporters overexpressed in the root pericycle of A. halleri and T. caerulescens to hyperaccumulate Fe (Talke et al., 2006; van de Mortel et al., 2006).”

    From Plant hyperaccumulators: a state-of-the-art review on mechanism of heavy metal transport and sequestration (2025) · cites this paper as van de Mortel et al., 2006

    Table IV identifies FRD3 as a MATE efflux family protein, and the Discussion reports higher expression of its ortholog in T. caerulescens than in A. thaliana. The Discussion also reports higher expression in A. halleri, citing Talke et al. (2006), and links FRD3 to iron homeostasis. It does not establish expression specifically in the root pericycle or that FRD3 causes iron hyperaccumulation in either species; the cited finding concerns zinc-hyperaccumulating plants. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Overexpression of ZNT1 was further confirmed by microarray analysis.

    “The overexpression of ZNT1 was further confirmed by microarray analysis (Hammond et al., 2006; van de Mortel et al., 2006).”

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Research works printed but not linked: 2

  1. [6]6. Baker AJM, Proctor J, van Balgooy MMJ, Reeves RD (1992) Hyperaccu- mulation of nickel by the flora of the ultramafics of Palawan, Republic of the Philippines. In AJM Baker, J Proctor, RD Reeves, eds, The Vegetation of Ultramafic (Serpentine) Soils. Proceedings of the First International Conference on Serpentine Ecology. Intercept, Andover, Hampshire, UK, pp 291-304
  2. [82]82. Zelko I, Lux A, Czibula K (2005) What is so special about root of T. caerulescens? A comparative study of root anatomy. In 1st Scientific Workshop and Management Committee Meeting. Phytotechnologies to Promote Sustainable Land Use and Improve Food Safety. COST Action 859. http://www.gre.ac.uk/cost859/documents/Pisaabstractbook.pdf

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Authors
van de Mortel, J. E., Almar Villanueva, L., Schat, H., Kwekkeboom, J., Coughlan, S., Moerland, P. D., Ver Loren van Themaat, E., Koornneef, M., & Aarts, M. G. M.
Affiliations
  • Laboratory of Genetics, Wageningen University, 6703 BD Wageningen, The Netherlands (J.E.v.d.M., L.A.V., M.K., M.G.M.A.); Institute of Ecological Sciences, Faculty of Earth and Life Sciences, Vrije Universiteit, 1081 HV Amsterdam, The Netherlands (H.S.); ServiceXS BV, 2333 AL Leiden, The Netherlands (J.K.); Agilent Technologies, Little Falls Site, Wilmington, Delaware 19808–1644 (S.C.); and Bioinf
  • Amsterdam UMC Location University of Amsterdam (NL)
Venue
Plant Physiology
Published
2006-09-22
Volume
142
Issue
3
Pages
1127-1147
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W2162834837
Cited by
547
References
85
Citations by year
2026: 11 · 2025: 31 · 2024: 20 · 2023: 23 · 2022: 31 · 2021: 50 · 2020: 33 · 2019: 30 · 2018: 26 · 2017: 24 · 2016: 28 · 2015: 21 · 2014: 38 · 2013: 33 · 2012: 33
FWCI
24.29
Type
journal article
Language
en
Open access
Locations
  • PLANT PHYSIOLOGY (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • VU Research Portal (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • European Commission
  • Nederlandse Organisatie voor Wetenschappelijk Onderzoek
  • Arizona Biomedical Research Commission
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
Keywords
zinc homeostasis, Thlaspi caerulescens, Arabidopsis thaliana, metal hyperaccumulation, differential gene expression, root transcriptome, abiotic stress response, lignin biosynthesis, endodermis, micronutrient toxicity
MeSH terms
Biodegradation, Environmental, Homeostasis, Iron, Lignin, Plant Proteins, Species Specificity, Zinc, Arabidopsis, Gene Expression Regulation, Plant, Plant Roots, Gene Expression Profiling, Thlaspi

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