A5022617095- Plant Micronutrient Interactions and Effects
- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Legume Nitrogen Fixing Symbiosis
- Plant responses to water stress
- Photosynthetic Processes and Mechanisms
- Iron Metabolism and Disorders
- Phytase and its Applications
- Plant Molecular Biology Research
- Protein Kinase Regulation and GTPase Signaling
- Cellular transport and secretion
- Aluminum toxicity and tolerance in plants and animals
- Plant Reproductive Biology
- Calcium signaling and nucleotide metabolism
- Receptor Mechanisms and Signaling
- Soybean genetics and cultivation
- Plant Genetic and Mutation Studies
- CRISPR and Genetic Engineering
- Genetic and Environmental Crop Studies
- Genetics, Aging, and Longevity in Model Organisms
- Agronomic Practices and Intercropping Systems
- Plant tissue culture and regeneration
- Plant Virus Research Studies
- Agricultural pest management studies
- Bacteriophages and microbial interactions
Cluster of Excellence on Plant Sciences
2015-2025
Heinrich Heine University Düsseldorf
2016-2025
Czech Academy of Sciences, Institute of Botany
2019-2024
Julius Kühn-Institut
2024
Durham University
2022
Johannes Gutenberg University Mainz
2020
Saarland University
2007-2019
Plant (United States)
2012
Praxis für Humangenetik Tübingen
2011
Leibniz Institute of Plant Genetics and Crop Plant Research
2002-2009
Nicotianamine chelates and transports micronutrient metal ions in plants. It has been speculated that nicotianamine is involved seed loading with micronutrients. A tomato (Solanum lycopersicum) mutant (chloronerva) a tobacco (Nicotiana tabacum) transgenic line have utilized to analyze the effects of loss. These mutants showed early leaf chlorosis had sterile flowers. Arabidopsis (Arabidopsis thaliana) four NICOTIANAMINE SYNTHASE (NAS) genes. We constructed two quadruple nas mutants: one full...
Abstract Understanding the regulation of key genes involved in plant iron acquisition is crucial importance for breeding micronutrient-enriched crops. The basic helix-loop-helix protein FER-LIKE FE DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT), a central regulator Fe roots, regulated by environmental cues and internal requirements at transcriptional posttranscriptional levels. stress hormone ethylene promotes acquisition, but molecular basis this remained unknown. Here, we demonstrate direct...
Iron deficiency is among the most common nutritional disorders in plants. To cope with low iron supply, plants exception of Gramineae increase solubility and uptake by inducing physiological developmental alterations including reduction, soil acidification, Fe(II) transport root-hair proliferation (strategy I). The chlorotic tomato fer mutant fails to activate strategy I. It was shown previously that gene required root. Here, we show exhibit root phenotypes after sufficient nutrition...
Iron mobilization responses are induced by low iron supply at transcriptional level. In tomato, the basic helix‐loop‐helix gene FER is required for induction of mobilization. Using molecular‐genetic techniques, we analyzed function BHLH029 , named FRU ( ‐like regulator uptake), Arabidopsis thaliana homolog tomato gene. The was mainly expressed in roots a cell‐specific pattern and deficiency. mutant plants were chlorotic, found necessary essential genes FRO2 (ferric chelate reductase gene)...
Genetic analysis of the wound response pathway in tomato indicates that systemin and its precursor protein, prosystemin, are upstream components a defensive signaling cascade involves synthesis subsequent action octadecatrienoic acid (18:3)–derived plant hormone jasmonic (JA). The suppressor prosystemin-mediated responses2 (spr2) mutation, which was isolated previously as (pro)systemin-mediated signaling, impairs wound-induced JA biosynthesis production long-distance signal for expression...
Metal transporters regulated by iron can transport a variety of divalent metals, suggesting that regulation is important for specificity transport. In plants, the iron-regulated broad-range metal transporter IRT1 required uptake into root epidermis. Functions other plant are not yet established. To deduce novel functions we studied four tomato genes belonging to nramp and irt families with respect environmental genetic factors influencing uptake. We isolated Lenramp1 Lenramp3 from...
The metal chelator nicotianamine promotes the bioavailability of Fe and reduces cellular toxicity. For breeding Fe-efficient crops, we need to explore fundamental impact on plant development physiology. quadruple nas4x-2 mutant Arabidopsis thaliana cannot synthesize any nicotianamine, shows strong leaf chlorosis, is sterile. To date, these phenotypes have not been fully explained. Here, show that sink organs this were deficient, while aged leaves sufficient. Upper also Zn deficient. We...
Plants grown under iron (Fe)-deficient conditions induce a set of genes that enhance the efficiency Fe uptake by roots. In Arabidopsis (Arabidopsis thaliana), central regulator this response is basic helix-loop-helix transcription factor FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT). FIT activity regulated protein-protein interactions, which also serve to integrate external signals stimulate and possibly inhibit uptake. search signaling components regulating function, we...
Understanding iron (Fe) sensing and regulation is important for targeting key genes nutritional traits like Fe content. The basic helix-loop-helix transcription factor FIT (for FER-LIKE FE DEFICIENCY-INDUCED TRANSCRIPTION FACTOR) controls acquisition in dicot roots. Posttranscriptional of factors allows rapid adaptation to cellular changes was also described FIT. However, the mechanisms behind this were a long time not known. Here, we studied posttranscriptional control Arabidopsis...
Abstract Dicotyledonous plants growing under limited iron availability initiate a response resulting in the solubilization, reduction, and uptake of soil iron. The protein factors responsible for these steps are transmembrane proteins, suggesting that intracellular trafficking machinery may be involved acquisition. In search components regulation Arabidopsis thaliana deficiency responses, we identified members SORTING NEXIN (SNX) family. SNX loss-of-function display enhanced susceptibility...
Summary Under nitrogen limitation, Rhizobium meliloti Nod factors induce cell divisions in the inner cortex of alfalfa roots a still unknown way. These division clusters subsequently develop into symbiotically nitrogen‐fixing nodules. To study involvement plant signals nodule initiation transgenic carrying promoter early nodulin gene MsEnod12A fused to reporter gusA were generated. In untreated plants, low level GUS staining was only found lateral root primordia and front apices. After...
The economic importance of cereals such as barley, and the demand for improved yield quality require a better understanding genetic components that modulate biologically commercially relevant traits. While Arabidopsis thaliana is premiere model plant system, spectrum its traits cannot address all fundamental questions crop development. Unlike Arabidopsis, barley both system scientific research, it increasingly being used molecular investigations into conserved biological processes cereals. A...
FIT (FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR) is the central regulator of iron uptake in Arabidopsis thaliana roots. We performed transcriptome analyses six day-old seedlings and roots week-old plants using wild type, a fit knock-out mutant over-expression line grown under iron-sufficient or iron-deficient conditions. compared genes regulated FIT-dependent manner depending on developmental stage plants. assembled high likelihood dataset which we used to perform co-expression...