533 search results for “soil bacteria” in the Public website
-
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…
-
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…
-
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.
-
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).
-
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.
-
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…
-
Annual report CML 2016
In 2016, CML published over 90 papers, successfully crowdfunded the Living Lab project, celebrated a royal honour for associate professor Hans de Iongh and contributed to the Global Soil Biodiversity Atlas. CML awarded five PhDs and taught students from all over the world how to contribute to sustainability.…
-
Ecotox
Ecotox is a stimulating top-facility that provides an integrative research environment around the topic of ecotoxicological testing and experimental research. Research focus: Dose-response modelling Mode-of-actions and mechanism-of-actions Test method development, in view of targets in AOPs (adverse…
-
Participants
The CMCB comprises research groups from the Institute of Biology Leiden (IBL), the Leiden Institute of Chemistry (LIC) and the Leiden University Medical Center (LUMC).
-
Evolution & Biodiversity in Microbial Sciences
Microbial Sciences' contribution to the Evolution & Biodiversity research theme focuses on understanding how bacteria sense and respond to their environment, and how bacterial diversity and evolution is influenced by cooperative and antagonistic interactions taking place between microbes.
-
Advanced Pre-clinical Evaluation of the Guanidino Lipoglycopeptides: A Novel Family of Glycopeptide Antibiotics with Best-in-Class Potential
Can we make a better vancomycin?
-
'A garden on Mars' crowdfunding campaign starts today
Today, 13 students at Leiden University have started a crowdfunding campaign to collect money for research into the possibilities of growing crops on Mars. Their research will contribute to the knowledge of our galaxy. The project is in the context of the iGEM competition.
-
Knowledge from now
Osteoarchaeologists help forensic scientists solve crimes. They also study bone material from the Second World War in order to identify victims.
-
Institute of Environmental Sciences (CML): best institute for quantitative environmental issues
A liveable planet. More biodiversity. And resources which are being managed wisely. At the CML, we want to make an impact with our research and education. On this website you can read what we do to achieve that.
-
Plant Sciences
The mission of the Plant Science research programme is to contribute to the sustainable production of high quality crops, flowers and high-value bio-based products. This is realised by generating fundamental knowledge of basic biological processes related to development of plants and their interaction…
-
Dating with electrodes struck to your skin
Four thousand visitors immersed themselves in art and science during Leiden's Night of Art and Science on 17 September. They could choose from dozens of lectures, experiments, interactive events and a lot of art.
-
Layers of dental tartar
Bacteria in the teeth tell us a lot about nutrition and disease in our ancestors. It also tells us more about the immune system. This provides clues for treating modern diseases and allergies. For a long time archaeologists were irritated by tartar on the teeth of excavated skulls. They thought that…
-
Formulation and Characterization of Vaccines
Vaccines are an extraordinary category of biopharmaceuticals. They are usually prophylactic and come in many types, from whole bacteria to peptides and nucleic acids. They are very cost effective and almost every human on the planet is vaccinated. The latter mandates that vaccines have to be extremely…
-
Chromatin organisation & dynamics
The genomic DNA of every organism is organized and compacted in order to fit inside the cell. This is achieved by the joint action of numerous architectural proteins that aid in folding the genome. Genome folding is tightly interconnected with transcription, with genes in certain regions being silenced,…
-
The use of animal manure by prehistoric and early medieval farmers
Did early farmers deliberately use animal manure on their fields?
-
Tilling and manuring prehistoric and early historic fields in western Europe
Since the adoption of agriculture people have cultivated fields. The project concerns all kinds of aspects related to raising crops.
-
Environmental and metabolomic study of antibiotic production by actinomycetes
Promotor: Prof.dr. G.P. van Wezel
-
COMMUNITY: unraveling the regulatory networks in Streptomyces that switch on antibiotic production on demand
Through his project we will unravel the global regulatory networks that control gene expression in Streptomyces bacteria and allow them to properly respond to major changes in the environment; we will then harness this knowledge to activate and identify novel antibiotics
-
News
A selection of news from Leiden University.
-
Efficient and flexible platform to isolate and study bacteriophages
We aim to develop a microfluidic platform that can parallelize testing the performance and characteristics of pure, mixed and environmental bacteriophage samples.
-
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.
-
Conquering the fortress: New strategies for the treatment of tuberculosis
Can we exploit the cell death machinery of the host to develop new host-directed anti-TB treatments?
-
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).
-
Cum laude physicist Tom O’Brien to research quantum chemistry by quantum computers
With defending his thesis ‘Applications of topology to Weyl semimetals and quantum computing’, the Leiden theoretical physicist Tom O'Brien has gained the rare 'cum laude' qualification. The freshly minted PhD has started a five year research programme on quantum algorithms for quantum chemistry, funded…
-
Development of life cycle assessment for residue-based bioenergy
What are the key issues in conducting LCA of bioenergy systems? What is the environmental sustainability status of second generation bioethanol? How much would the final results of biogenic carbon neutrality assumptions deviate from the true values based on a complete inventory? How to assess the impact…
-
Immunity, Infection and Tolerance
Our immune system protects us against disease, but every now and then, something goes wrong: an enemy invades our bodies or our immune system attacks our own cells and we become ill. Doctors and researchers at the Leiden University Medical Center (LUMC) want to be able to manipulate the immune system…
-
Metagenomics for community ecology; a next generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
-
Common Practice: a livelihood perspective of economic development in the post-Roman world.
Today’s socio-economic challenges aren’t new. In the centuries after the retreat of the Roman state people with different backgrounds and with different ways of life somehow managed to build and maintain a complex economic system in northern Gaul that would produce the ruling dynasties of Europe. By…
-
Monitoring drought and salinity stress in agriculture by remote sensing for a sustainable future
Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…
-
Institute of Biology Leiden
The Institute of Biology Leiden (IBL) is an internationally oriented institute for research and education in biology. We are part of the Faculty of Science at Leiden University.
-
Functional analysis of agrobacterium tumefaciens virulence protein VirD5
Supervisor: P.J.J. Hooykaas
- Institute of Urban Environment
-
Nature and human interactions
It is well-known that humans have significantly transformed ecosystems since their adoption of agriculture. However, in a deeper past, prehistoric hunter-gatherers may already have altered and modified their niche in ways that had major impacts on ecosystems.
-
Molecular engineering of plant development using Agrobacterium-mediated protein translocation
Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa
-
Pesticides and the Environment
The book ‘Pesticides and the Environment’ gives a transparent overview of facts and figures concerning pesticide use in the Netherlands and the impact of pesticides on the environment.
-
Global distribution patterns of mycorrhizal associations
Mycorrhizas are symbiotic associations between soil fungi and most plant species.
-
Fieldwork
Fieldwork is an essential part of this research and of course this part of the project is also a joint effort by citizen scientists and professional archaeologists. Discover when fieldwork will take place and how you can participate.
-
The mechanism of Agrobacterium-mediated transformation of eukaryotic cells
We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.
-
Fire and grazers in the West African savanna
Promotores: H.A. Udo de Haes, H.H.T. Prins, Co-promotor: H.H. de Iongh
-
Terrestrial field trials for side-effects of pesticides
The thesis describes terrestrial field trials aimed to detect side-effects of pesticides within the framework of pesticide registration procedures. Field trials were developed using vascular plants Brassica napus and Poa annua, caterpillars Pieris brassicae and effects on decomposition were studied…
-
Flooding and Management of Large Fluvial Lowlands
Paul Hudson, Associate Professor of Physical Geography at Leiden University College, examines human impacts on lowland rivers in his new book.
-
Francophone Literature in the Low Countries (1200-1600)
In late medieval and early modern times, books, as well as the people who produced and read (or listened to) them, moved between regions, social circles, and languages with relative ease. Yet, in the multilingual Low Countries, francophone literature was both internationally mobile and firmly rooted…
-
Institutional trust
Trust in public institutions in the Tata Steel case and beyond
-
Cheating belowground interactions
Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.
-
Analecta Praehistorica Leidensia 41
Corrie Bakels & Hans Kamermans (eds) (2009)