174 zoekresultaten voor “soil bacteria” in de Publieke website
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Effect of Nanoparticles on Microbial Catabolism and Community Structure using Biolog techniques
1. To what extent do metallic NPs added to soil extractions change the activity, abundance, or community composition of microbes? 2. How do the effects of metallic NPs on soil microbes differ from the effects of the ions shedding from corresponding NPs?
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Understanding the role of mycorrhizas in global carbon cycle processes
How the global distribution of vegetation stands dominated by arbuscular and ectomycorrhizal plants relate to principle aspects of belowground carbon accumulation processes?
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Impact of plant domestication on spermosphere and rhizosphere microbiome composition
Microbiome composition of the spermosphere and the rhizosphere of wild and modern bean accessions grown in an agricultural and a native soil from Colombia was characterized by metagenomics and cultivation-dependent approaches.
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Signalling pathways that control development and antibiotic production in streptomyces
Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.
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Fungi of the greening Arctic: compositional and functional shifts in response to climatic changes
Promotor: E.F. Smets Co-promotor: J. Geml
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Peeking into the future: Fungi in the greening Arctic
Promotor: E.F. Smets, Co-promotor: J. Geml
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Soil and Crop Management Options to Improve N Cycling on Dairy Farms on Peat Soil
Promotie
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De nieuwe baan van hoogleraar Microbioom-ecologie Ákos Kovács voelt als thuiskomen
‘Werken in Leiden is een droom die uitkomt.’ Ákos Kovács studeerde in zijn geboorteland Hongarije en werkte in Duitsland, Denemarken en Groningen. Sinds september is hij hoogleraar Microbioom-ecologie bij het Instituut Biologie Leiden en hij werkt meteen volop met collega’s samen om ontdekkingen te…
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'Een op de vijf geteste bacteriën bleek in staat om plastic af te breken'
De Leidse promovenda Jo-Anne Verschoor ontdekte dat bijna twintig procent van de bacteriële stammen die ze onderzocht, plastic kon afbreken. Al hadden ze daar wel wat aanmoediging voor nodig. ‘Want bacteriën zijn net als mensen’, zegt Verschoor. Haar onderzoek verscheen in het tijdschrift Communications…
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Nano shapes micro : Impacts of metallic nanoparticles on microbial communities
This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.
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Off the wall: characterisation and exploitation of a cell wall deficient life style in filamentous actinomycetes
Almost all bacteria are enveloped by a cell wall that provides cellular protection.
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Semisynthetic glycopeptide antibiotics
Vancomycin is a last-resort antibiotic for the treatment of many Gram-positive bacterial infections, while remaining inactive against Gram-negative strains.
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Synthesis of Ribitol Phosphate based Wall Teichoic acids
Antibiotic resistance, caused by widespread use of antibiotics, leads to bacterial infections that are difficult, if not impossible, to treat and is a major worldwide health concern.
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Cellular Forces: Adhering, Shaping, Sensing and Dividing
Promotor: Prof.dr. T. Schmidt
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Group benefits from genomic instability: a tale of antibiotic warriors in Streptomyces
Streptomyces are filamentous bacteria that produce more than two-thirds of known antibiotics.
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Trans-kingdom DNA transfer
The type-IV secretion system (T4SS) is a machinery able to transfer DNA and proteins between bacteria and in certain cases also to eukaryotic cells.
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Development of life cycle assessment for residue-based bioenergy
Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs
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Improving Nature’s Antibiotics to Overcome Resistant Bacteria
Lezing, NGL-lezing
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Another Brick in the Wall: The role of the actinobacterial cell wall in antibiotic resistance, phylogeny and development
Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.
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Mechanisms and consequences of horizontal gene transfer in cell wall-deficient cells of Kitasatospora viridifaciens
The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…
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Evolutionary adaptability of β-lactamase: a study of inhibitor susceptibility in various model systems
β-Lactamases are enzymes that can break down β-lactam substrates, such as antibiotics, preventing the use of these antibiotics for the treatment of various infectious diseases. However, some compounds, β-lactamase inhibitors, can block these enzymes allowing for possible treatments using a combination…
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Multi-omics studies of the control of growth and antibiotic production of Streptomyces
Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).
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Cryo Electron Tomography Studies On Bacterial Chemosensory Arrays
Bacterial chemosensory arrays are protein assemblies that are the key structural and functional component for motile bacteria to sense their internal or environmental chemical signals.
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Spatial populations with seed-bank
In populations with a seed-bank, individuals can temporarily become dormant and refrain from reproduction until they can become active again. The repository of all dormant individuals in the population is called the seed-bank. Seed-banks are observed in many taxa, including plants, bacteria and other…
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Emilia Hannula
Wiskunde en Natuurwetenschappen
s.e.hannula@cml.leidenuniv.nl | +31 71 527 7489
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Modelling the role of mycorrhizal associations in soil carbon cycling
Promotie
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Een artistieke kijk op verborgen bodemschimmels
Muziek van een composteerbare cello, foto’s en geurtjes van schimmels en een geweven wandkleed. Het zijn een aantal voorbeelden uit Super Organism, het kunstproject van Suzette Bousema waarin je de ondergrondse schimmelwereld met al je zintuigen kunt beleven. Leids milieuwetenschapper Nadia Soudzolovskaia…
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Ook planten hebben wel eens burenruzie
Herstel van de natuur op uitgeputte landbouwgrond en in natuurgebieden verloopt moeizaam. ‘Bodemtransplantatie’ kan mogelijk uitkomst bieden. Dat betoogt Martijn Bezemer, hoogleraar Ecologie van Plant-Microbe-Insect interacties. Oratie op 18 december.
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David Zetland in Biznews about watershortage in California
Gisteren verscheen er een artikel in Biznews over het watertekort in California. David Zetland, universitair docent aan het Leiden University College The Hague, gaf zijn mening over dit probleem.
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Control of Western flower thrips through jasmonate-triggered plant immunity
We showed that constitutive and inducible chemical and morphological defenses against Western flower thrips differ between tomato and chrysanthemum plants.
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Microcoil MRI of Plants and Algae at Ultra-High Field: An exploration of metabolic imaging
This thesis investigates the relations between metabolism and anatomy through the use of Magnetic Resonance Imaging (MRI).
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Centrum voor milieuwetenschappen: beste instituut voor kwantitatieve milieuvraagstukken
Een leefbare aarde. Meer biodiversiteit. En verstandig omgaan met resources. Bij het CML willen we impact maken met ons onderzoek én onderwijs. Op deze website lees je hoe we dat doen.
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Environmental and metabolomic study of antibiotic production by actinomycetes
Promotor: Prof.dr. G.P. van Wezel
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Wetenschappers ontdekken meeliftende bacteriën
Stel: je moet reizen, maar je hebt geen auto en je bent volledig blut. Wat doe je? Liften natuurlijk! Leidse biologen hebben ontdekt dat bepaalde bacteriën precies deze tactiek toepassen: hun sporen springen op beweeglijke bacteriën en gebruiken die als taxi. Zo kunnen ze de juiste omgeving bereiken…
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Beter inzicht in concurrentiestrijd tussen microben in bodems en oceanen
Vooral neerslag en bodemzuurgraad bepalen welke microben in een bepaalde habitat overleven en welke niet. Deze kennis is van belang om de biodiversiteit in stand te houden. Leidse milieukundigen werkten mee aan het onderzoek. Publicatie in Nature op 1 augustus.
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Mireadili Kuerban
Wiskunde en Natuurwetenschappen
m.kuerban@biology.leidenuniv.nl | +31 71 527 2727
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Weilin Huang
Wiskunde en Natuurwetenschappen
w.huang@cml.leidenuniv.nl | +31 71 527 2727
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Eman Elbadry
Wiskunde en Natuurwetenschappen
e.m.elbadry@cml.leidenuniv.nl | +31 71 527 7486
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Anniek Kortleve
Wiskunde en Natuurwetenschappen
a.j.kortleve@cml.leidenuniv.nl | +31 71 527 2727
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Dirk-Jan Kok
Wiskunde en Natuurwetenschappen
d.d.kok@cml.leidenuniv.nl | +31 71 527 2727
- The soil resource – The nexus of climate, rocks, life, food, and water (The Hague)
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Plant-soil interactions determine ecosystem aboveground and belowground processes in primary dune ecosystems
Promotie
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Discovery of Antibiotics and Their Targets in Multidrug-Resistant Bacteria
Promotie
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Potentiation of Gram-positive specific antibiotics against Gram-negative bacteria through outer membrane disruption
Promotie
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The innate immune response against mycobacterial infection: analysis by a combination of light and electron microscopy
Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn Co-promotor: Dr. M.J.M. Schaaf
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Analysis of the angucycline biosynthetic gene cluster in Streptomyces sp. QL37 and implications for lugdunomycin production
Streptomyces bacteria are a valuable source of natural products, many of which are used in the clinic or in biotechnology.
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Synthesis of phosphodiester-containing bacterial cell wall components: teichoic acids, capsular polysaccharides and phosphatidyl glycerol analogues
Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée
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Exploring and exploiting the mechanism of mycelial pellet formation by Streptomyces
Promotor: G.P. van Wezel
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Key innate immune components controlling intracellular infection
Promotor: H.P. Spaink, Co-Promotor: A.H. Meijer
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Identification and characterization of developmental genes in streptomyces
Promotor: Prof.dr. G.P. van Wezel