In de Hortus botanicus Leiden bloeit de Jadevine (Strongylodon macrobotrys). Drie weken geleden begon de plant meerdere bloeitrossen te produceren, waarvan de eersten intussen in volle bloei staan.

Planten zou je kunnen zien als kleine chemische fabrieken, die via fotosynthese chemische stoffen produceren. Als we fotosynthese kunnen nabootsen in een kunstmatig systeem, kunnen we schone brandstoffen en materialen maken uit zonlicht en CO2. Huub de Groot is heel dicht bij het ontwerpen van zo’n…

Promotie

Promotie

Promotie

Promotie

Ziekteverwekkende bacteriën zijn steeds vaker resistent voor de huidige antibiotica. De vraag naar nieuwe antibiotica wordt daarmee steeds groter. Professor Gilles van Wezel zoekt naar nieuwe vormen van antibiotica in goede bacteriën die in de grond leven.

Does a high quality prairie restoration in an urban/agricultural landscape provide invertebrates necessary for a sustainable ecosystem?

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

Mycorrhizas are symbiotic associations between soil fungi and most plant species.

Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

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.

Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.

Promotie

Promotie

Promotie

Promotie

Op 16 juni heeft Kirsten Leiss van de Universiteit Leiden de tweede Jan Ritzema Bosprijs gewonnen. Deze prijs werd door de Koninklijke Nederlandse Plantenziektekundige Vereniging (KNPV) uitgeloofd voor de beste presentatie van de dag, tijdens de voorjaarsbijeenkomst ‘Recente ontwikkelingen in de Gew…

De schatkamers van de Leidse Universiteitsbibliotheek en Naturalis hebben prachtige historische collecties met gedroogde planten en botanische tekeningen. Tinde van Andel, bijzonder hoogleraar Geschiedenis van botanie en tuinen, onderzoekt deze collecties.

Milieuwetenschapper Nadia Soudzilovskaia heeft de prestigieuze, internationale Bessel-Forschungs-prijs van de Von Humboldt-stichting gewonnen. Deze Duitse prijs wordt uitgereikt aan uitmuntende buitenlandse wetenschappers die middenin hun carrière staan en samenwerken met Duitse onderzoekers. ‘Het is…

Lezing

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).

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Is het mogelijk om oxytocine reacties bij gezonde personen farmacologisch te conditioneren en de neurale circuits te identificeren die aan deze conditionering ten grondslag liggen?

For questions and suggestions regarding the series, please contact prof. dr. Olaf van Vliet or dr. Max van Lent

The zebrafish is a promising vertebrate model organism in early drug discovery and development.

Promotor: Prof.dr. M. Danhof, Co-Promotor: J. de Jongh

This thesis discusses the physical and chemical processes than influence the composition of forming planets.

Promotor: Carel J. ten Cate, Co-Promotor: Hans W. Slabbekoorn

There is a need for alternative methods to replace, reduce and refine (3R) animal experimentation. Combining experimental data from high-throughput in vitro studies with in silico modeling is a promising approach to unravel the effect of chemicals on living cells and to gain a better understanding of…

Promotor: Prof.dr. D. Bouwmeester, Co-Promotor: M.J.A. de Dood

Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda

Promotor: A.P. IJzerman Co-promotor: L.H. Heitman

Promotor: V. Vitelli, Co-promotor: J. Paulose

The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.

1: What is the relative importance of alfa and beta biodiversity in polar ecosystems, and how does intraspecific variation influence this? 2: How can we use remote sensing to determine functional biodiversity (within communities) in polar ecosystems? 3: Temporal and spatial scales of functional biodiversity:…

Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink

Consequences for sediment stability and seston trapping

Promotores: Wim Jiskoot; Ferry Ossendorp

A plasma is an ionized gas with very low electrical resistivity. As such, magnetic field lines are 'frozen in' and move with the fluid. Magnetic field lines that are linked, knotted and tangled, cannot be undone by the fluid motions.

Cardiovascular disease is the leading cause of death worldwide.

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,…

Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.

Cardiovascular syndromes are the major cause of death in Western societies.

The aim is to discover where differently shaped metal nanoparticles distributes in Danio rerio, linking the distribution with genomic responses and so come up with a Mode of Action.