Ute Krämer
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View article: CW Terahertz Spectroscopy of Heavy-Metal-Induced Alterations in Arabidopsis halleri
CW Terahertz Spectroscopy of Heavy-Metal-Induced Alterations in Arabidopsis halleri Open
Soil pollution and the resulting accumulation of heavy metals in plants represent an increasing challenge for food safety and environmental monitoring. Traditional detection techniques are often destructive, labor-intensive, and poorly sui…
View article: Difference and subordination – the epistemic struggles of collaborative knowledge production in the field of mental health
Difference and subordination – the epistemic struggles of collaborative knowledge production in the field of mental health Open
Background Collaborative or co-productive approaches in the field of mental health care research are often legitimized by the argument that researchers with lived experience of mental health crisis and disability (= LE) produce different k…
View article: Diverging <i>Arabidopsis</i> populations quickly accumulate pollen-acting genetic incompatibilities
Diverging <i>Arabidopsis</i> populations quickly accumulate pollen-acting genetic incompatibilities Open
The process by which species diverge from one another, gradually accumulate genetic incompatibilities, and eventually reach full-fledged reproductive isolation is a key question in evolutionary biology. However, the nature of reproductive …
View article: Difference and subordination – the epistemic struggles of collaborative knowledge production in the field of mental health
Difference and subordination – the epistemic struggles of collaborative knowledge production in the field of mental health Open
Background:Collaborative or co-productive approaches in the field of mental health care research are often legitimized by the argument that researchers with lived experience of mental health crisis and disability (= LE) produce different k…
View article: Comparative physiology of xylem nickel loading in the hyperaccumulator Odontarrhena inflata and a non-accumulator Aurinia saxatilis
Comparative physiology of xylem nickel loading in the hyperaccumulator Odontarrhena inflata and a non-accumulator Aurinia saxatilis Open
Background and Aims This study aimed to gain insight into the biochemical mechanisms of Ni movement in Odontarrhena inflata and Aurinia saxatilis. Methods We examined the effects of Ni exposure on the concentrations of histidine and nicoti…
View article: Population Genomics Reveals Demographic History and Climate Adaptation in Japanese <i>Arabidopsis halleri</i>
Population Genomics Reveals Demographic History and Climate Adaptation in Japanese <i>Arabidopsis halleri</i> Open
Climate oscillations in the Quaternary forced species to major latitudinal or altitudinal range shifts. It has been suggested that adaptation concomitant with range shifts plays key roles in species responses during climate oscillations, b…
View article: Diverging Arabidopsis populations quickly accumulate pollen-acting genetic incompatibilities
Diverging Arabidopsis populations quickly accumulate pollen-acting genetic incompatibilities Open
The process by which species diverge from one another, gradually accumulate genetic incompatibilities and eventually reach full-fledged reproductive isolation is a key question in evolutionary biology. However, the nature of reproductive b…
View article: The evolutionary history and functional specialization of microRNA genes in<i>Arabidopsis halleri</i>and<i>A. lyrata</i>
The evolutionary history and functional specialization of microRNA genes in<i>Arabidopsis halleri</i>and<i>A. lyrata</i> Open
MicroRNAs (miRNAs) are a class of small non-coding RNAs that play important regulatory roles in plant genomes. While some miRNA genes are deeply conserved, the majority appear to be species-specific, raising the question of how they emerge…
View article: Modifiers of genetic dominance at the Arabidopsis self-incompatibility locus retain proto-miRNA features and act through non-canonical gene silencing pathways
Modifiers of genetic dominance at the Arabidopsis self-incompatibility locus retain proto-miRNA features and act through non-canonical gene silencing pathways Open
Self-incompatibility in flowering plants is a common mechanism that prevents self-fertilization and promotes outcrossing. In Brassicaceae, the self-incompatibility locus is highly diverse, with many alleles arranged in a complex dominance …
View article: Population genomics reveals demographic history and climate adaptation in Japanese<i>Arabidopsis halleri</i>
Population genomics reveals demographic history and climate adaptation in Japanese<i>Arabidopsis halleri</i> Open
Climate oscillations in the Quaternary forced species to major latitudinal or altitudinal range shifts. It has been suggested that adaptation concomitant with range shifts plays key roles in species responses during climate oscillations, b…
View article: Plant colonizers of a mercury contaminated site: trace metals and associated rhizosphere bacteria
Plant colonizers of a mercury contaminated site: trace metals and associated rhizosphere bacteria Open
Background and aims Mercury (Hg) contamination poses severe human and environmental health risks. We aimed to evaluate the colonization of Hg-contaminated sites by native plants and the prokaryotic composition of rhizosphere soil communiti…
View article: Metal Homeostasis in Land Plants: A Perpetual Balancing Act Beyond the Fulfilment of Metalloproteome Cofactor Demands
Metal Homeostasis in Land Plants: A Perpetual Balancing Act Beyond the Fulfilment of Metalloproteome Cofactor Demands Open
One of life's decisive innovations was to harness the catalytic power of metals for cellular chemistry. With life's expansion, global atmospheric and biogeochemical cycles underwent dramatic changes. Although initially harmful, they permit…
View article: Auranofin induces disulfide bond-mimicking S-Au-S bonds in protein thiol pairs
Auranofin induces disulfide bond-mimicking S-Au-S bonds in protein thiol pairs Open
Auranofin is an inhibitor of human thioredoxin reductase, clinically used in the treatment of rheumatoid arthritis. More recently, it has been shown to possess strong antibacterial activity. Despite the structural dissimilarity and the ind…
View article: BRUTUS-LIKE (BTSL) E3 ligase-mediated fine-tuning of Fe regulation negatively affects Zn tolerance of Arabidopsis
BRUTUS-LIKE (BTSL) E3 ligase-mediated fine-tuning of Fe regulation negatively affects Zn tolerance of Arabidopsis Open
The mineral micronutrients zinc (Zn) and iron (Fe) are essential for plant growth and human nutrition, but interactions between the homeostatic networks of these two elements are not fully understood. Here we show that loss of function of …
View article: Towards Continuous Real-Time Plant and Insect Monitoring by Miniaturized THz Systems
Towards Continuous Real-Time Plant and Insect Monitoring by Miniaturized THz Systems Open
In this paper, new concepts for continuous 24/7 real-time monitoring of plants and insects with miniaturized terahertz (THz) systems are described and experimentally tested. Thus, for the first time, small-scale insights into the instantan…
View article: Arabidopsis nicotianamine synthases comprise a common core-NAS domain fused to a variable autoinhibitory C terminus
Arabidopsis nicotianamine synthases comprise a common core-NAS domain fused to a variable autoinhibitory C terminus Open
Nicotianamine synthase (NAS) catalyzes the biosynthesis of the low-molecular-mass metal chelator nicotianamine (NA) from the 2-aminobutyrate moieties of three SAM molecules. NA has central roles in metal nutrition and metal homeostasis of …
View article: Arabidopsis Nicotianamine Synthases (NAS) comprise a common core-NAS domain fused to a variable auto-inhibitory C-terminus
Arabidopsis Nicotianamine Synthases (NAS) comprise a common core-NAS domain fused to a variable auto-inhibitory C-terminus Open
Nicotianamine Synthase (NAS) catalyzes the biosynthesis of nicotianamine (NA) from the 2-aminobutyrate moieties of three S -adenosylmethionine molecules. NA has central roles in metal nutrition and metal homeostasis of flowering plants. De…
View article: Energy status-promoted growth and development of Arabidopsis require copper deficiency response transcriptional regulator SPL7
Energy status-promoted growth and development of Arabidopsis require copper deficiency response transcriptional regulator SPL7 Open
Copper (Cu) is a cofactor of around 300 Arabidopsis proteins, including photosynthetic and mitochondrial electron transfer chain enzymes critical for adenosine triphosphate (ATP) production and carbon fixation. Plant acclimation to Cu defi…
View article: Effects of 4‐Br‐A23187 on <i>Bacillus subtilis</i> cells and unilamellar vesicles reveal it to be a potent copper ionophore
Effects of 4‐Br‐A23187 on <i>Bacillus subtilis</i> cells and unilamellar vesicles reveal it to be a potent copper ionophore Open
Ionophores are small molecules or peptides that transport metal ions across biological membranes. Their transport capabilities are typically characterized in vitro using vesicles and single ion species. It is difficult to infer from these …
View article: A two-step adaptive walk rewires nutrient transport in a challenging edaphic environment
A two-step adaptive walk rewires nutrient transport in a challenging edaphic environment Open
Most well-characterized cases of adaptation involve single genetic loci. Theory suggests that multilocus adaptive walks should be common, but these are challenging to identify in natural populations. Here, we combine trait mapping with pop…
View article: Chloroplast Ribosomes Interact With the Insertase Alb3 in the Thylakoid Membrane
Chloroplast Ribosomes Interact With the Insertase Alb3 in the Thylakoid Membrane Open
Members of the Oxa1/YidC/Alb3 protein family are involved in the insertion, folding, and assembly of membrane proteins in mitochondria, bacteria, and chloroplasts. The thylakoid membrane protein Alb3 mediates the chloroplast signal recogni…
View article: Corrigendum: Involvement of Arabidopsis Multi-Copper Oxidase-Encoding LACCASE12 in Root-to-Shoot Iron Partitioning: A Novel Example of Copper-Iron Crosstalk
Corrigendum: Involvement of Arabidopsis Multi-Copper Oxidase-Encoding LACCASE12 in Root-to-Shoot Iron Partitioning: A Novel Example of Copper-Iron Crosstalk Open
[This corrects the article DOI: 10.3389/fpls.2021.688318.].
View article: Root‐to‐shoot iron partitioning in Arabidopsis requires IRON‐REGULATED TRANSPORTER1 (IRT1) protein but not its iron(II) transport function
Root‐to‐shoot iron partitioning in Arabidopsis requires IRON‐REGULATED TRANSPORTER1 (IRT1) protein but not its iron(II) transport function Open
SUMMARY IRON‐REGULATED TRANSPORTER1 (IRT1) is the root high‐affinity ferrous iron (Fe) uptake system and indispensable for the completion of the life cycle of Arabidopsis thaliana without vigorous Fe supplementation. Here we provide eviden…
View article: Constitutively enhanced genome integrity maintenance and direct stress mitigation characterize transcriptome of extreme stress‐adapted <i>Arabidopsis halleri</i>
Constitutively enhanced genome integrity maintenance and direct stress mitigation characterize transcriptome of extreme stress‐adapted <i>Arabidopsis halleri</i> Open
SUMMARY Heavy metal‐rich toxic soils and ordinary soils are both natural habitats of Arabidopsis halleri , a diploid perennial and obligate outcrosser in the sister clade of the genetic model plant Arabidopsis thaliana . The molecular dive…
View article: Involvement of Arabidopsis Multi-Copper Oxidase-Encoding LACCASE12 in Root-to-Shoot Iron Partitioning: A Novel Example of Copper-Iron Crosstalk
Involvement of Arabidopsis Multi-Copper Oxidase-Encoding LACCASE12 in Root-to-Shoot Iron Partitioning: A Novel Example of Copper-Iron Crosstalk Open
Numerous central biological processes depend on the participation of the essential elements iron (Fe) or copper (Cu), including photosynthesis, respiration, cell wall remodeling and oxidative stress protection. Yet, both Fe and Cu metal ca…
View article: Energy status-promoted growth and development of Arabidopsis require copper deficiency response transcriptional regulator SPL7
Energy status-promoted growth and development of Arabidopsis require copper deficiency response transcriptional regulator SPL7 Open
Copper (Cu) is a cofactor of around 300 Arabidopsis proteins including photosynthetic and mitochondrial electron transfer chain enzymes critical for ATP production and carbon fixation. Plant acclimation to Cu deficiency requires the transc…
View article: <i>Arabidopsis thaliana</i> Zn2+-efflux ATPases HMA2 and HMA4 are required for resistance to the necrotrophic fungus <i>Plectosphaerella cucumerina</i> BMM
<i>Arabidopsis thaliana</i> Zn2+-efflux ATPases HMA2 and HMA4 are required for resistance to the necrotrophic fungus <i>Plectosphaerella cucumerina</i> BMM Open
Zinc is an essential nutrient at low concentrations, but toxic at slightly higher ones. It has been proposed that hyperaccumulator plants may use the excess zinc to fend off pathogens and herbivores. However, there is little evidence of a …