Cited by 55Plant Stress Responses and ToleranceHeavy metals in environmentPlant Micronutrient Interactions and Effects

Isolation of Zn-responsive genes from two accessions of the hyperaccumulator plant Thlaspi caerulescens

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Hassinen, V. H., Tervahauta, A. I., Halimaa, P., Plessl, M., Peräniemi, S., Schat, H., Aarts, M. G. M., Servomaa, K. +1 more·2007·Planta

Abstract

Several populations with different metal tolerance, uptake and root-to-shoot transport are known for the metal hyperaccumulator plant Thlaspi caerulescens. In this study, genes differentially expressed under various Zn exposures were identified from the shoots of two T. caerulescens accessions (calaminous and non-calaminous) using fluorescent differential display RT-PCR. cDNA fragments from 16 Zn-responsive genes, including those encoding metallothionein (MT) type 2 and type 3, MRP-like transporter, pectin methylesterase (PME) and Ole e 1-like gene as well as several unknown genes, were eventually isolated. The full-length MT2 and MT3 sequences differ from those previously isolated from other Thlaspi accessions, possibly representing new alleles or isoforms. Besides the differential expression in Zn exposures, the gene expression was dependent on the accession. Thlaspi homologues of ClpP protease and MRP transporter were induced at high Zn concentrations. MT2 and PME were expressed at higher levels in the calaminous accession. The MTs and MRP transporter expressed in transgenic yeasts were capable of conferring Cu and Cd tolerance, whereas the Ole e 1-like gene enhanced toxicity to these metals. The MTs increased yeast intracellular Cd content. As no significant differences were found between Arabidopsis and Thlaspi MTs, they apparently do not differ in their capacity to bind metals. However, the higher levels of MT2 in the calaminous accession may contribute to the Zn-adapted phenotype.

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Crossref · 10.1007/s00425-006-0403-0

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Authors
Hassinen, V. H., Tervahauta, A. I., Halimaa, P., Plessl, M., Peräniemi, S., Schat, H., Aarts, M. G. M., Servomaa, K., & Kärenlampi, S. O.
Affiliations
  • University of Eastern Finland (FI)
  • Vrije Universiteit Amsterdam (NL)
  • Wageningen University & Research (NL)
Corresponding author
Kärenlampi, S. O.
Venue
Planta
Published
2006-09-30
Volume
225
Issue
4
Pages
977-989
ISSN
  • 0032-0935 (ISSN-L)
  • 1432-2048
OpenAlex
W2159190314
Cited by
55
References
53
Citations by year
2026: 1 · 2025: 2 · 2022: 1 · 2021: 4 · 2020: 4 · 2018: 1 · 2017: 2 · 2016: 3 · 2014: 3 · 2013: 5 · 2012: 9
FWCI
4.91
Type
journal article
Language
en
Open access
Locations
  • Planta (publishedVersion)
  • PubMed (publishedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • Site cant be reached (submittedVersion)
  • VU Research Portal (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
Keywords
Thlaspi caerulescens, zinc hyperaccumulation, metal hyperaccumulator plants, metallothionein, MRP transporters, pectin methylesterase, differential gene expression, zinc tolerance, cadmium tolerance, copper tolerance
MeSH terms
Amino Acid Sequence, Carboxylic Ester Hydrolases, Metallothionein, Molecular Sequence Data, Zinc, Gene Expression Regulation, Plant, Plant Shoots, ATP-Binding Cassette Transporters, Gene Expression Profiling, Thlaspi, Endopeptidase Clp

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