References of "Hanikenne, Marc"
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See detailTransition metal transport
Krämer, Ute; Talke, Ina N.; Hanikenne, Marc ULg

in FEBS Letters (2007), 581(12 Sp. Iss. SI), 2263-2272

Transition metal transporters are of central importance in the plant metal homeostasis network which maintains internal metal concentrations within physiological limits. An overview is given of the ... [more ▼]

Transition metal transporters are of central importance in the plant metal homeostasis network which maintains internal metal concentrations within physiological limits. An overview is given of the functions of known transition metal transporters in the context of the unique chemical properties of their substrates. The modifications of the metal homeostasis network associated with the adaptation to an extreme metalliferous environment are illustrated in two Brassicaceae metal hyperaccumulator model plants based on cross-species transcriptomics studies. In a comparison between higher plants and unicellular algae, hypotheses are generated for evolutionary changes in metal transporter complements associated with the transition to multicellularity. (c) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. [less ▲]

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See detailThe Chlamydomonas genome reveals the evolution of key animal and plant functions.
Merchant, Sabeeha S.; Prochnik, Simon E.; Vallon, Olivier et al

in Science (2007), 318(5848), 245-50

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as the ... [more ▼]

Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as the structure, assembly, and function of eukaryotic flagella (cilia), which were inherited from the common ancestor of plants and animals, but lost in land plants. We sequenced the approximately 120-megabase nuclear genome of Chlamydomonas and performed comparative phylogenomic analyses, identifying genes encoding uncharacterized proteins that are likely associated with the function and biogenesis of chloroplasts or eukaryotic flagella. Analyses of the Chlamydomonas genome advance our understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella. [less ▲]

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See detailGene regulation in Arabidopsis halleri, a model system to understand zinc homeostasis in plants.
Hanikenne, Marc ULg; Talke, Ina N.; Lanz, Christa et al

Conference (2006, December 18)

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See detailRegulation of metal homeostasis genes in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2006, October 19)

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See detailZinc-dependent global transcriptional control, transcriptional deregulation, and higher gene copy number for genes in metal homeostasis of the hyperaccumulator Arabidopsis halleri
Talke, Ina N.; Hanikenne, Marc ULg; Krämer, Ute

in Plant Physiology (2006), 142(1), 148-167

The metal hyperaccumulator Arabidopsis halleri exhibits naturally selected zinc (Zn) and cadmium (Cd) hypertolerance and accumulates extraordinarily high Zn concentrations in its leaves. With these ... [more ▼]

The metal hyperaccumulator Arabidopsis halleri exhibits naturally selected zinc (Zn) and cadmium (Cd) hypertolerance and accumulates extraordinarily high Zn concentrations in its leaves. With these extreme physiological traits, A. halleri phylogenetically belongs to the sister clade of Arabidopsis thaliana. Using a combination of genome-wide cross species microarray analysis and real-time reverse transcription-PCR, a set of candidate genes is identified for Zn hyperaccumulation, Zn and Cd hypertolerance, and the adjustment of micronutrient homeostasis in A. halleri. Eighteen putative metal homeostasis genes are newly identified to be more highly expressed in A. halleri than in A. thaliana, and 11 previously identified candidate genes are confirmed. The encoded proteins include HMA4, known to contribute to root-shoot transport of Zn in A. thaliana. Expression of either AtHMA4 or AhHMA4 confers cellular Zn and Cd tolerance to yeast (Saccharomyces cerevisiae). Among further newly implicated proteins are IRT3 and ZIP10, which have been proposed to contribute to cytoplasmic Zn influx, and FRD3 required for iron partitioning in A. thaliana. In A. halleri, the presence of more than a single genomic copy is a hallmark of several highly expressed candidate genes with possible roles in metal hyperaccumulation and metal hypertolerance. Both A. halleri and A. thaliana exert tight regulatory control over Zn homeostasis at the transcript level. Zn hyperaccumulation in A. halleri involves enhanced partitioning of Zn from roots into shoots. The transcriptional regulation of marker genes suggests that in the steady state, A. halleri roots, but not the shoots, act as physiologically Zn deficient under conditions of moderate Zn supply. [less ▲]

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See detailPromoter-driven high expression of metal homeostasis genes in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2005, December 08)

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See detailStudy of metal regulation in Arabidopsis halleri, a model system to understand zinc homeostasis in plants
Hanikenne, Marc ULg; Talke, Ina N.; Galante, Carolina et al

Poster (2005, July 03)

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See detailStudy of metal regulation in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2005, May 19)

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See detailStudy of metal regulation in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2005, January 06)

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See detailA mitochondrial half-size ABC transporter is involved in cadmium tolerance in Chlamydomonas reinhardtii
Hanikenne, Marc ULg; Motte, Patrick ULg; Wu, Madeline C.S. et al

in Plant Cell and Environment (2005), 28(7), 863-873

Five cadmium-sensitive insertional mutants, all affected at the CDS1 ('cadmium-sensitive 1') locus, have been previously isolated in the unicellular green alga Chlamydomonas reinhardtii. We here describe ... [more ▼]

Five cadmium-sensitive insertional mutants, all affected at the CDS1 ('cadmium-sensitive 1') locus, have been previously isolated in the unicellular green alga Chlamydomonas reinhardtii. We here describe the cloning of the Cds1 gene (8314 bp with 26 introns) and the corresponding cDNA. The Cds1 gene, strongly induced by cadmium, encodes a putative protein (CrCds1) of 1062 amino acid residues that belongs to the ATM/HMT subfamily of half-size ABC transporters. This subfamily includes both vacuolar HMT-type proteins transporting phytochelatin-cadmium complexes from the cytoplasm to the vacuole and mitochondrial ATM-type proteins involved in the maturation of cytosolic Fe/S proteins. Unlike the Delta sphmt1 cadmium-sensitive mutant of Schizosaccharomyces pombe that lacks a vacuolar HMT-type transporter, the cds1 mutant accumulates a high amount of phytochelatin-cadmium complexes. By epitope tagging, the CrCds1 protein was localized in the mitochondria. Even though mitochondria of cds1 do not accumulate important amounts of 'free' iron, the mutant cells are hypersensitive to high iron concentrations. Our data show for the first time that a mitochondrial ATM-like transporter plays a major role in tolerance to cadmium. [less ▲]

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See detailStudy of metal regulation in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2004, January 22)

Detailed reference viewed: 5 (1 ULg)