A5006070085- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Plant Molecular Biology Research
- Plant Micronutrient Interactions and Effects
- Photosynthetic Processes and Mechanisms
- Aluminum toxicity and tolerance in plants and animals
- Plant Gene Expression Analysis
- Plant Reproductive Biology
- Fungal and yeast genetics research
- Neurological diseases and metabolism
- Polysaccharides and Plant Cell Walls
- Legume Nitrogen Fixing Symbiosis
- Polyamine Metabolism and Applications
- Enzyme-mediated dye degradation
- Mitochondrial Function and Pathology
- Plant-Microbe Interactions and Immunity
- Transgenic Plants and Applications
- Metabolism, Diabetes, and Cancer
- Lignin and Wood Chemistry
- Plant and Biological Electrophysiology Studies
- Metabolism and Genetic Disorders
Martin Luther University Halle-Wittenberg
2020-2023
TU Dresden
2019
Centre National de la Recherche Scientifique
2017-2018
Instituto de Biología Molecular y Celular de Plantas
2006-2018
Universitat Politècnica de València
2004-2018
Sorbonne Paris Cité
2018
Université Paris Cité
2018
Institut des Sciences des Plantes de Paris Saclay
2018
Université Paris-Sud
2018
Université Paris-Saclay
2018
Drought and salt are major abiotic stresses that adversely affect crop productivity. Thus, identification of factors confer resistance to these would pave way increasing agricultural When grown on soil in green house longer than 5 weeks, transgenic Arabidopsis plants overexpress an ATP-binding cassette (ABC) transporter, AtABCG36/AtPDR8, produced higher shoot biomass less chlorotic leaves the wild-type. We investigated whether improved growth AtABCG36-overexpressing was due their stresses,...
Plants require trace levels of manganese (Mn) for survival, as it is an essential cofactor in oxygen metabolism, especially O2 production via photosynthesis and the disposal superoxide radicals. These processes occur specialized organelles, requiring membrane-bound intracellular transporters to partition Mn between cell compartments. We identified Arabidopsis thaliana member NRAMP family divalent metal transporters, NRAMP2, which functions distribution Mn. Two knockdown alleles NRAMP2 showed...
The stress hormone abscisic acid (ABA) induces expression of defence genes in many organs, modulates ion homeostasis and metabolism guard cells, inhibits germination seedling growth. Concerning the latter effect, several mutants Arabidopsis thaliana with improved capability for H+ efflux (wat1-1D, overexpression AKT1 ost2-1D) are less sensitive to inhibition by ABA than wild type. This suggested that could inhibit (H+-ATPase) induce cytosolic acidification as a mechanism growth inhibition....
Summary In order to investigate the effects of a permanent increase in cellular H 2 O on cation homeostasis we have studied T‐DNA insertion mutant Arabidopsis CATALASE gene. This ( cat2‐1 ) exhibits 20% wild‐type leaf catalase activity and accumulates more than wild type under normal growth conditions. addition reduced size, pale green color great reduction secondary roots, exhibited increased sensitivity , NaCl, norspermidine, high light cold stress. On other hand, germination is tolerant...
The Trihelix Transcription factor GT2-like 1 (GTL1) was previously shown to be a key regulator of ploidy-dependent trichome growth and drought tolerance. Here, we report that GTL1 plays an important role in coordinating plant immunity. We show gtl1 mutants are compromised the regulation basal immunity, microbial pattern-triggered immunity (PTI) effector-triggered RIN4-mediated Transcriptome analysis revealed positively regulates defense genes inhibits factors mediate development. By...
The PDR-type ABCG transporter, ABCG36/PDR8/PEN3, is thought to be implicated in the export of a few structurally unrelated substrates, including auxin precursor, indole-3-butyric acid (IBA), although clear-cut proof transport lacking. An outward facing, lateral root (LR) location for ABCG36 fuelled speculations that it might secrete IBA into rhizosphere. Here, we provide strong evidence catalyzes - but not indole-3-acetic through plasma membrane. seems function redundantly with closely...
Abstract Once the plant coenzyme A (CoA) biosynthetic pathway has been elucidated by comparative genomics, it is feasible to analyze physiological relevance of CoA biosynthesis in life. To this end, we have identified and characterized Arabidopsis (Arabidopsis thaliana) T-DNA knockout mutants two genes, HAL3A HAL3B. The gene encodes a 4′-phosphopantothenoyl-cysteine decarboxilase that generates 4′-phosphopantetheine. second gene, HAL3B, whose product 86% identical HAL3A, present genome....
Abstract Trk, encoded by the partially redundant genes TRK1 and TRK2 , is major potassium transporter of Saccharomyces cerevisiae . This system specific for rubidium but, reducing electrical membrane potential plasma membrane, Trk decreases uptake toxic cations such as lithium, calcium, aminoglycosides polyamines, which are transported other systems. Gain‐ loss‐of‐function studies indicate that TPS1 a gene encoding trehalose‐6‐phosphate synthase known to modulate glucose metabolism,...
Summary Intracellular p H (p i ) is a crucial parameter in cellular physiology but its mechanisms of homeostasis are only partially understood. To uncover novel roles and participants the regulatory system, we have screened an Arabidopsis mutant collection for resistance seed germination to intracellular acidification induced by weak organic acids (acetic, propionic, sorbic). The phenotypes one identified mutant, acid‐tolerant 1‐1D ( wat1‐1 D due expression truncated form AP ‐3 β‐adaptin...
Manganese (Mn) is an essential microelement, but overaccumulation harmful to many plant species. Most plants have similar minimal Mn requirements, the tolerance elevated varies considerably. Mobilization of phosphate (P) by roots leads increased uptake, and shoot levels been reported serve as indicator for P mobilization efficiency in presence deficiency. White lupin (Lupinus albus L.) mobilizes with outstanding due formation determinate cluster that release carboxylates. The high L. goes...
Spermidine is a polyamine present in eukaryotes with essential functions protein synthesis. At high concentrations spermidine and norspermidine inhibit growth by unknown mechanisms. Transcriptomic analysis of the effect on plant Arabidopsis thaliana indicates upregulation response to heat stress denatured proteins. Accordingly, these polyamines ubiquitylation, both vivo (in yeast, Arabidopsis, human Hela cells) vitro (with recombinant ubiquitin ligase). This interferes degradation...
Abstract Manganese (Mn), iron (Fe), and zinc (Zn) are essential for diverse processes in plants, but their availability is often limiting or excessive. Cation diffusion facilitator (CDF) proteins have been implicated the allocation of those metals whereby most our mechanistic understanding has obtained Arabidopsis. It unclear to what extent this can be generalized other dicots. We characterized all CDFs/metal tolerance sugar beet ( Beta vulgaris spp. ), which phylogenetically distant from...