A5042982031- Plant Surface Properties and Treatments
- Postharvest Quality and Shelf Life Management
- Plant responses to water stress
- Plant Reproductive Biology
- Plant Stress Responses and Tolerance
- Tree Root and Stability Studies
- Plant biochemistry and biosynthesis
- Horticultural and Viticultural Research
- Plant Molecular Biology Research
- Insect and Pesticide Research
- Plant Pathogens and Fungal Diseases
- Plant nutrient uptake and metabolism
- Plant Water Relations and Carbon Dynamics
- Legume Nitrogen Fixing Symbiosis
- Insect and Arachnid Ecology and Behavior
- Lipid metabolism and biosynthesis
- Plant responses to elevated CO2
- Photosynthetic Processes and Mechanisms
- Surface Modification and Superhydrophobicity
- Plant Gene Expression Analysis
- Plant-Microbe Interactions and Immunity
- Forest Insect Ecology and Management
- Fungal Plant Pathogen Control
- Plant and animal studies
- Polysaccharides and Plant Cell Walls
University of Bonn
2016-2025
Fraunhofer Institute for Material Flow and Logistics
2020-2023
Wolfram Research (United Kingdom)
2023
Amsterdam University of Applied Sciences
2023
Popular University of Cesar
2023
TU Dortmund University
2023
Technical University of Munich
1990-2023
Karlsruhe Institute of Technology
2023
University of South Asia
2023
Universidad del Norte
2023
Abstract The anther cuticle and microspore exine act as protective barriers for the male gametophyte pollen grain, but relatively little is known about mechanisms underlying biosynthesis of monomers which they are composed. We report here isolation characterization a rice (Oryza sativa) sterile mutant, cyp704B2, exhibits swollen sporophytic tapetal layer, aborted grains without detectable exine, undeveloped cuticle. In addition, chemical composition analysis indicated that cutin were hardly...
Though central to our understanding of how roots perform their vital function scavenging water and solutes from the soil, no direct genetic evidence currently exists support foundational model that suberin acts form a chemical barrier limiting extracellular, or apoplastic, transport in plant roots. Using newly characterized enhanced suberin1 (esb1) mutant, we established connection Arabidopsis thaliana between root both movement through solute accumulation shoot. Esb1 mutants, by increased...
Abstract The cuticle fulfills multiple roles in the plant life cycle, including protection from environmental stresses and regulation of organ fusion. It is largely composed cutin, which consists C16-18 fatty acids. While cutin composition biosynthesis have been studied, export monomers out epidermis has remained elusive. Here, we show that DESPERADO (AtWBC11) (abbreviated DSO), encoding a plasma membrane-localized ATP-binding cassette transporter, required for transport to extracellular...
Abstract Aliphatic alcohols naturally exist in many organisms as important cellular components; however, their roles extracellular polymer biosynthesis are poorly defined. We report here the isolation and characterization of a rice (Oryza sativa) male-sterile mutant, defective pollen wall (dpw), which displays anther development degenerated grains with an irregular exine. Chemical analysis revealed that dpw anthers had dramatic reduction cutin monomers altered composition cuticular wax, well...
Mature pollen is covered by durable cell walls, principally composed of sporopollenin, an evolutionary conserved, highly resilient, but not fully characterized, biopolymer aliphatic and aromatic components. Here, we report that ABORTED MICROSPORES (AMS) acts as a master regulator coordinating wall development sporopollenin biosynthesis in Arabidopsis thaliana. Genome-wide coexpression analysis revealed 98 candidate genes with specific expression the anther 70 showed reduced ams. Among these...
Suberin, a polymer composed of both aliphatic and aromatic domains, is deposited as rough matrix upon plant surface damage during normal growth in the root endodermis, bark, specialized organs (e.g., potato [Solanum tuberosum] tubers), seed coats. To identify genes associated with developmental control suberin deposition, we investigated chemical composition transcriptomes suberized tomato (Solanum lycopersicum) russet apple (Malus x domestica) fruit surfaces. Consequently, gene expression...
Based on the characterization of chemical composition endodermal and hypodermal cell walls isolated from seven monocotyledonous three dicotyledonous plant species, a model apoplastic barriers in roots is proposed. Depending contained varying amounts biopolymers suberin, lignin, wall proteins, carbohydrates. Although analysis these now possible, it pointed out that conclusions data concerning functional properties can not easily be drawn. However, analogy to suberized periderms argued suberin...
The lipophilic biopolyester suberin forms important boundaries to protect the plant from its surrounding environment or separate different tissues within plant. In roots, can be found in cell walls of endodermis and hypodermis periderm. Apoplastic barriers composed accomplish challenge restrict water nutrient loss prevent invasion pathogens. Despite physiological importance knowledge composition many plants, very little is known about biosynthesis genes involved. Here, a detailed analysis...
Abstract The outermost epidermal cell wall is specialized to withstand pathogens and natural stresses, lipid-based cuticular polymers are the major barrier against incursions. Arabidopsis thaliana mutant bodyguard (bdg), which exhibits defects characteristic of loss cuticle structure not attributable a lack typical cutin monomers, unexpectedly accumulates significantly more wall–bound lipids epicuticular waxes than wild-type plants. Pleiotropic effects bdg mutation on growth, viability,...
In vegetative leaf tissues, cuticles including cuticular waxes are important for protection against nonstomatal water loss and pathogen infection as well adaptations to environmental stress. However, their roles in the anther wall rarely studied. The innermost layer of (the tapetum) is essential generating male gametes. Here, we report characterization a T-DNA insertional mutant Wax-deficient anther1 (Wda1) gene rice (Oryza sativa), which shows significant defects biosynthesis...
The cuticle covering plants' aerial surfaces is a unique structure that plays key role in organ development and protection against diverse stress conditions. A detailed analysis of the tomato colorless-peel y mutant was carried out framework studying outer surface reproductive organs. peel lacks yellow flavonoid pigment naringenin chalcone, which has been suggested to influence characteristics function cuticular layer. Large-scale metabolic transcript profiling revealed broad effects on both...
Floral organs display tremendous variation in their exterior that is essential for organogenesis and the interaction with environment. This diversity surface characteristics largely dependent on composition structure of coating cuticular layer. To date, mechanisms flower organ initiation identity have been studied extensively, while little known regarding regulation formation, cuticle composition, its developmental significance. Using a synthetic microRNA approach to simultaneously silence...
Rice is an important crop that very sensitive to salinity. However, some varieties differ greatly in this feature, making investigations of salinity tolerance mechanisms possible. The cultivar Pokkali tolerant and known have more extensive hydrophobic barriers its roots than does IR20, a cultivar. These located the root endodermis exodermis prevent direct entry external fluid into stele. it case rice, these are bypassed by most Na+ enters shoot. Exposing plants moderate stress 100 mM NaCl...
Abstract Male Sterile2 (MS2) is predicted to encode a fatty acid reductase required for pollen wall development in Arabidopsis (Arabidopsis thaliana). Transient expression of MS2 tobacco (Nicotiana benthamiana) leaves resulted the accumulation significant levels C16 and C18 alcohols. Expression fused with green fluorescent protein revealed that an amino-terminal transit peptide targets plastids. The plastidial localization biologically important because genetic complementation ms2 homozygous...
Suberin composition of various plants including Arabidopsis (Arabidopsis thaliana) has shown the presence very long chain fatty acid derivatives C20 in addition to C16 and C18 series. Phylogenetic studies plant genome mining have led identification putative aliphatic hydroxylases belonging CYP86B subfamily cytochrome P450 monooxygenases. In Arabidopsis, this is represented by CYP86B1 CYP86B2, which share about 45% identity with CYP86A1, a omega-hydroxylase implicated root suberin monomer...
Summary Suberin is a hydrophobic polyester found in the cell walls of various plant–environment interfaces, including shoot and root peridermal tissue, hypodermis endodermis. deposits form apoplastic barriers that control water nutrient transport, protect against pathogens seal wounded tissue. Despite this physiological importance, detailed information on suberin composition many plants, there great gap our knowledge molecular mechanism biosynthesis, caused part by lack mutants formation....