A5079634247- Plant nutrient uptake and metabolism
- Legume Nitrogen Fixing Symbiosis
- Mycorrhizal Fungi and Plant Interactions
- Plant Micronutrient Interactions and Effects
- Plant Molecular Biology Research
- Plant-Microbe Interactions and Immunity
- Plant Parasitism and Resistance
- Plant Stress Responses and Tolerance
- Photosynthetic Processes and Mechanisms
- Plant Pathogens and Fungal Diseases
- Phytase and its Applications
- Potato Plant Research
- Plant tissue culture and regeneration
- Plant Reproductive Biology
- Fungal Biology and Applications
- Plant responses to water stress
- Genetic Mapping and Diversity in Plants and Animals
- Nematode management and characterization studies
- Polysaccharides and Plant Cell Walls
- Phosphorus and nutrient management
- Agricultural Science and Fertilization
- Plant Pathogens and Resistance
- Bioenergy crop production and management
- Plant Gene Expression Analysis
- Polyamine Metabolism and Applications
University of Cologne
2016-2025
Cluster of Excellence on Plant Sciences
2016-2025
European Telecommunications Standards Institute
2016
Interactions Arbres-Microorganismes
2011
ETH Zurich
1998-2008
Ghent University
2007
University of Zurich
2007
University of Basel
2007
Timiryazev Institute of Plant Physiology
2004
École Polytechnique Fédérale de Lausanne
2000-2004
Highlights•Colletotrichum tofieldiae (Ct) is a fungal root endophyte of Arabidopsis•Ct transfers the macronutrient phosphorus to Arabidopsis shoots•Ct-mediated plant growth promotion needs an intact phosphate starvation response•A branch innate immune system essential for beneficial Ct activitiesSummaryA staggering diversity endophytic fungi associate with healthy plants in nature, but it usually unclear whether these represent stochastic encounters or provide host fitness benefits. Although...
This paper reviews the possibility and limits for increasing content bioavailability of iron (Fe), zinc (Zn) calcium (Ca) in edible parts staple crops, such as cereals, pulses, roots tubers a way to combat mineral deficiencies human populations. Theoretically, this could be achieved by total level Fe, Zn Ca plant foods, while at same time concentration compounds which promote their uptake (ascorbic acid), and/or decreasing inhibit absorption (phytic acid or phenolic compounds). The grains...
Most terrestrial plants form arbuscular mycorrhiza (AM), mutualistic associations with soil fungi of the order Glomeromycota. The obligate biotrophic trade mineral nutrients, mainly phosphate (Pi), for carbohydrates from plants. Under conditions high exogenous supply, when plant can meet its own P requirements without fungus, AM are suppressed, an effect which could be interpreted as active strategy to limit carbohydrate consumption fungus by inhibiting proliferation in roots. However,...
Petunia hybrida is a popular bedding plant that has long history as genetic model system. We report the whole-genome sequencing and assembly of inbred derivatives its two wild parents, P. axillaris N inflata S6. The assemblies include 91.3% 90.2% coverage their diploid genomes (1.4 Gb; 2n = 14) containing 32,928 36,697 protein-coding genes, respectively. reveal lineage experienced at least rounds hexaploidization: older gamma event, which shared with most Eudicots, more recent Solanaceae...
Most land plants live in association with arbuscular mycorrhizal (AM) fungi and rely on this symbiosis to scavenge phosphorus (P) from soil. The ability establish partnership has been lost some plant lineages like the Brassicaceae, which raises question of what alternative nutrition strategies such have grow P-impoverished soils. To understand contribution plant-microbiota interactions, we studied root-associated fungal microbiome
Fungal symbiosis with early land plants Hundreds of millions years ago, evolved descendants aquatic began showing up on dry land. These newly terrestrialized species had to deal increased ultraviolet light exposure, desiccation, and less accessible nutrients. Rich et al. show how mutualist fungi may have helped these nascent plant lineages adaptation their challenging environment (see the Perspective by Bouwmeester). Genetic metabolic analysis a liverwort as representative such suggests that...
Phosphorus (P) is an essential macronutrient for all living organisms. It serves various basic biological functions as a structural element in nucleic acids and phospholipids, energy metabolism, the activation of metabolic intermediates, component signal transduction cascades, regulation enzymes. Of major nutrients, P most dilute least mobile soil. High sorbing capacity soil (e.g. sorbtion to metal oxides), mineralization calcium phosphates such apatite), and/or fixation organic matter...
Solanaceous species are among the >200 000 plant worldwide forming a mycorrhiza, that is, root living in symbiosis with soil-borne arbuscular-mycorrhizal (AM) fungi. An important parameter of this symbiosis, which is vital for ecosystem productivity, agriculture, and horticulture, transfer phosphate (Pi) from AM fungus to plant, facilitated by plasma membrane-spanning Pi transporter proteins. The first mycorrhiza-specific be identified, was StPT3 potato [Nature414 (2004) 462]. Here, we...
Root hairs as specialized epidermal cells represent part of the outermost interface between a plant and its soil environment. They make up to 70% root surface and, therefore, are likely contribute significantly nutrient uptake. To study uptake systems for mineral nitrogen, three genes homologous Arabidopsis nitrate ammonium transporters (AtNrt1 AtAmt1) were isolated from hair-specific tomato cDNA library. Accumulation LeNrt1-1, LeNrt1-2, LeAmt1 transcripts was root-specific, with no...
An Arabidopsis genomic sequence was recently shown to share similarity with bacterial and eukaryotic phosphate (Pi) transporters. We have cloned the corresponding cDNA, which we named Pht2;1, subsequently performed gene expression studies functional analysis of protein product. The cDNA encodes a 61-kD putative topology 12 transmembrane (TM) domains interrupted by large hydrophilic loop between TM8 TM9. Two boxes eight nine amino acids, located in N- C-terminal domains, respectively, are...
Abstract: Maize is one of the most important crops in developing world, where adverse soil conditions and low fertilizer input are two main constraints for stable food supply. Understanding molecular biochemical mechanisms involved nutrient uptake expected to support development future breeding strategies aimed at improving maize productivity on infertile soils. Phosphorus least mobile macronutrient soils it often limiting plant growth. In this work, five genes encoding Pht1 phosphate...
• Plants colonized by arbuscular mycorrhizal (AM) fungi take up phosphate (Pi) via the and direct Pi uptake pathway. Our understanding of molecular mechanisms involved in regulation these pathways is just emerging. Here, we have analyzed physiology tomato (Solanum lycopersicum) variety Micro-Tom integrated data obtained with studies on chemical signaling mycorrhiza-inducible transporter gene regulation. At high plant phosphorus (P) status, pathway was almost completely repressed genes were...
Arbuscular mycorrhizae are ancient symbioses that thought to have originated >400 million years ago in the roots of plants, pioneering colonization terrestrial habitats. In these associations, a key process is transfer phosphorus as inorganic phosphate host plant across fungus–plant interface. Mycorrhiza-specific transporter genes and their regulation conserved phylogenetically distant species, they activated selectively by fungal species from phylum Glomeromycota . The potato gene StPT3...
Abstract Arbuscular mycorrhizal (AM) fungi, in symbiosis with plants, facilitate acquisition of nutrients from the soil to their host. After penetration, intracellular hyphae form fine-branched structures cortical cells termed arbuscules, representing major site where bidirectional nutrient exchange takes place between host plant and fungus. Transcriptional mechanisms underlying this cellular reprogramming are still poorly understood. GRAS proteins an important family transcriptional...
The arbuscular mycorrhizal (AM) symbiosis represents the most widely distributed mutualistic root symbiosis. We report that extracts of plants contain a lipophilic signal capable inducing phosphate transporter genes StPT3 and StPT4 potato (Solanum tuberosum L.), are specifically induced in roots colonized by AM fungi. same caused rapid extracellular alkalinization suspension-cultured tomato lycopersicum L.) cells induction mycorrhiza-specific gene LePT4 these cells. active principle was...
Gene networks involved in inorganic phosphate (Pi) acquisition and homeostasis woody perennial species able to form mycorrhizal symbioses are poorly known. Here, we describe the features of 12 genes coding for Pi transporters Pht1 family poplar (Populus trichocarpa). Individual play distinct roles acquiring translocating different tissues nonmycorrhizal during growth conditions developmental stages. starvation triggered up-regulation most members family, especially PtPT9 PtPT11. PtPT12...
Abstract A key feature of arbuscular mycorrhizal symbiosis is improved phosphorus nutrition the host plant via pathway, i.e., fungal uptake Pi from soil and its release arbuscules within root cells. Efficient transport fungus to cells thought require a proton gradient across periarbuscular membrane (PAM) that separates cell cytoplasm. Previous studies showed H+-ATPase gene HA1 expressed specifically in arbuscule-containing Medicago truncatula. We isolated ha1-2 mutant M. truncatula found it...
Abstract Background Abiotic stress causes disturbances in the cellular homeostasis. Re-adjustment of balance carbon, nitrogen and phosphorus metabolism therefore plays a central role adaptation. However, it is currently unknown which parts primary cell follow common patterns under different conditions represent specific responses. Results To address these questions, changes transcriptome, metabolome ionome were analyzed maize source leaves from plants suffering low temperature, (N) (P)...