A5014332078- Dental materials and restorations
- Photopolymerization techniques and applications
- Plant Molecular Biology Research
- Plant Reproductive Biology
- Phosphorus compounds and reactions
- Dental Implant Techniques and Outcomes
- Advanced Polymer Synthesis and Characterization
- Polysaccharides and Plant Cell Walls
- Plant Stress Responses and Tolerance
- Synthetic Organic Chemistry Methods
- Cyclopropane Reaction Mechanisms
- Plant Gene Expression Analysis
- Organometallic Complex Synthesis and Catalysis
- Plant nutrient uptake and metabolism
- Organophosphorus compounds synthesis
- Building materials and conservation
- Dental Trauma and Treatments
- Endodontics and Root Canal Treatments
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Catalytic Alkyne Reactions
- Chemical Synthesis and Characterization
- Plant Parasitism and Resistance
- Bone Tissue Engineering Materials
- Dental Erosion and Treatment
- X-ray Diffraction in Crystallography
Ivoclar Vivadent (Liechtenstein)
2010-2020
Umeå Plant Science Centre
2007-2019
Swedish University of Agricultural Sciences
2006-2019
KWS Saat (Germany)
2019
University of Göttingen
2004-2015
Ivoclar Vivadent (Germany)
2004-2012
The plant hormone auxin (indole-3-acetic acid, IAA) has a crucial role in development. Its spatiotemporal distribution is controlled by combination of biosynthetic, metabolic and transport mechanisms. Four families transporters have been identified that mediate across the plasma or endoplasmic reticulum membrane. Here we report discovery functional characterization first vacuolar transporter. We demonstrate WALLS ARE THIN1 (WAT1), plant-specific protein dictates secondary cell wall thickness...
Trees represent the largest terrestrial carbon sink and a renewable source of ligno-cellulose. There is significant scope for yield quality improvement in these largely undomesticated species, efforts to engineer elite varieties will benefit from improved understanding transcriptional network underlying cambial growth wood formation. We generated high-spatial-resolution RNA sequencing data spanning secondary phloem, vascular cambium, wood-forming tissues Populus tremula The transcriptome...
Truffles are symbiotic fungi that form ectomycorrhizas with plant roots. Here we present evidence at an early stage of the interaction, i.e. prior to physical contact, mycelia white truffle Tuber borchii and black melanopsorum induce alterations in root morphology host Cistus incanus nonhost Arabidopsis (Arabidopsis thaliana; primary shortening, lateral formation, hair stimulation). This was most likely due production indole-3-acetic acid (IAA) ethylene by mycelium. Application a mixture...
As bisacylphosphine oxides are highly efficient, cleavable photoinitiators for visible light curing, we were interested in preparing diacylgermane 2. The UV–vis absorption maximum of the n−π* transition was red-shifted up to 50 nm. Photo-DSC results 2 showed similar reactivity under broadband irradiation experiments. Irradiation with a dental LED lamp gave significantly improved initiation behavior compared and camphorquinone, especially aqueous acidic primer formulations....
The class I KNOX transcription factors SHOOT MERISTEMLESS (STM) and KNAT1 are important regulators of meristem maintenance in shoot apices, with a dual role promoting cell proliferation inhibiting differentiation. We examined whether they control stem the cambium Arabidopsis hypocotyls, wood-forming lateral meristem, similar fashion as apical meristem. Weak loss-of-function alleles STM led to reduced formation xylem fibers - highly differentiated cambial derivatives whereas was only mildly...
Abstract New dibenzoylgermanium derivatives are synthesized starting from various dithioacetal protected benzaldehydes by a coupling reaction with different dialkyldichlorogermanes and subsequent oxidative cleavage of the protecting group. The germanium compounds show significantly stronger blue light absorption than camphorquinone. During irradiation, undergo photodecomposition under formation radicals. Therefore, used as amine‐free visible‐light photoinitiators for dental cements...
Wood formation in higher plants is a complex and costly developmental process regulated by network of transcription factors, short peptide signals hormones. Correct spatiotemporal initiation differentiation downstream stages vital for proper wood formation. Members the NAC (NAM, ATAF1/2 CUC) family factors are described as top level regulators xylem cell fate secondary wall (SCW) deposition, but initiating their have yet to be elucidated. We found that treatment Populus stems with auxin...
The peptide INFLORESCENCE DEFICIENT IN ABSCISSION (IDA), which signals through the leucine-rich repeat receptor-like kinases HAESA (HAE) and HAESA-LIKE2 (HSL2), controls different cell separation events in Arabidopsis thaliana. We hypothesize involvement of this signaling module abscission processes other plant species even though they may shed organs than A. As first step towards testing hypothesis from an evolutionarily perspective we have identified genes encoding putative orthologues IDA...
Abstract As highly reactive acylphosphine oxide‐based photoinitiators (PIs) are limited in the application for dental materials by their absorption behavior, we were interested to prepare acylgermane 1 . UV‐Vis maximum of important n – π * transition was red shifted about 30 nm compared monoacylphosphine oxides. Photo‐DSC results with a LED lamp showed nearly same reactivity camphorquinone (CQ), while oxides not reactive. In broadband irradiation experiments, significantly higher CQ found....
AUXIN-BINDING PROTEIN 1 (ABP1) is not easily accessible for molecular studies because the homozygous T-DNA insertion mutant embryo-lethal. We found that heterozygous abp1/ABP1 has defects in auxin physiology-related responses: higher root slanting angles, longer hypocotyls, agravitropic roots and aphototropic decreased apical dominance. Heterozygous plants flowered earlier than wild-type under short-day conditions. The length of main root, lateral density hypocotyl were little altered...
Timing of leaf abscission is an important trait for biomass production and seasonal acclimation in deciduous trees. The signaling leading to organ separation, from the external cue (decreasing photoperiod) ethylene-regulated hydrolysis middle lamellae zone, only poorly understood. Data annual species indicate that formation auxin gradient spanning zone regulates timing abscission. We established experimental system Populus induce shedding synchronously under controlled greenhouse conditions...
Thiol‐ene photopolymerizations combine the unique features of step‐growth reactions and photoinitiated polymerizations, so that they experience a growing interest for applications such as coatings or dental restoratives. Most studies have making use relatively flexible ester hydrolytically labile derivative pentaerythritoltetra(3‐mercaptopropionate) ( PETMP ) thiol component in common. In this study, performance stable 1,3,5‐tris(3‐mercaptopropyl)‐1,3,5‐triazine‐2,4,6‐trione 4a ),...
Acrylic groups containing phosphonic acids were synthesised by ether formation of ethyl a-chloromethylacrylate with hydroxyalkylphosphonates and subsequent hydrolysis to the corresponding acid a-methyl-substituted acrylates. The structure monomers was confirmed elemental analysis, IR, 1 H NMR, 13 C NMR 31 P spectroscopy. are stable in aqueous ethanol. radical polymerisation monoacrylates tetrahydrofuran 2,2'-azobisisobutyronitrile (AIBN) results soluble polymers, whereas a diacrylate...
Abstract Hydrolytically stable, crosslinking bis(acrylamide)s 1a – 1l or bis(methacrylamide)s 2a 2c were synthesized by reaction of acryloyl methacryloyl chloride using primary secondary amines. In addition, monomers 3a and 3b obtained amidation 2,6‐dimethylene‐4‐oxaheptane‐1,7‐dicarboxylic acid (DMOHDA) with propylamine diethylamine, respectively. The structures the characterized IR, 1 H, 13 C NMR spectroscopy. All containing N,N′ ‐monosubstituted carbamide groups solids. Those...