This thesis describes the functional analysis of the Arabidopsis AHL15 gene.

Understanding DNA repair mechanisms is essential for advancing plant biotechnology and crop improvement. This study investigates how double-strand breaks (DSBs), induced by CRISPR/Cas systems, are repaired in the model plant Arabidopsis thaliana, and how these processes influence Agrobacterium tumefaciens…

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.

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.

This article describes the creation of an app that can help raise climate awareness and the action globally.

Professor at the Department of Pharmaceutical Sciences, Tshwane University of Technology, Pretoria - South Africa

Pectin is a plant cell wall polysaccharide made of mainly D-galacturonic acid (GA) subunits. The potency of the filamentous fungus Aspergillus niger to naturally secrete high amounts of pectinases to degrade pectin has been utilized for the industrial production of pectinases.

The name ‘Jambi flora’ refers to fossil plants found as part of a rock formation from the Early Permian (296 million years old), located in the Jambi Province of Sumatra, Indonesia.

The study of orchid flowers, fruits, and inflorescences is crucial due to the remarkable diversity of orchid species and their unique adaptations to pollinators and seed dispersers. However, our understanding of the evolution and development of these organs within the orchid family remains limited.

Collaborators and advisors of the Plant BioDynamics Laboratory

Factors affecting galanthamine production in Narcissus

For information about the programme, please contact one of the following persons.

How do archaeologists test ideas about the evolution of the modern brain? Veni-researcher Geeske Langejans and then Master student Paul Kozowyk (Leiden University) prepared different Prehistoric glue recipes and tested these for strength in modern test machines at the Delft University of Technology.

We aim to understand ion homeostasis in the model eukaryote S. cerevisiae.

This thesis presents the systematics, epidermal defense, and bioprospecting of wild orchids.

The research aims to understand how did Cuban and Dominican landscape encapsulate historical conceptual transformations about human –nature spiritual interaction after the Spanish conquest? More specifically, what are the present day cultural associations with Cuban and Dominican natural landscape?…

The Old Observatory is located on the grounds of the Hortus. This is the oldest surviving university observatory in the world. Since 1633, the University of Leiden has used the various rooms for the education of students. The Visitor Center on the ground floor of the Old Observatory is part of the Hortus…

We live in a world of things and people in the past must have been as closely entangled with their material surroundings as we are now. In the Laboratory for Artefact Studies Van Gijn takes a close look at the biographies of objects: what kind of raw material an object is made off and what is its provenience,…

Climate change is a challenge for both current and future generations. New biological resources have to be developed in order to meet the demand for energy as well as the demand for food.

In September 2023, we will be transforming a under-utilised outdoor space into a greener and more biodiverse garden in which all students and staff of the Schouwburgstraat can relax and enjoy.

The Metabolomics Facility of the University of Leiden has brought together two research groups from the Faculty of Science that are well-known for their expertise in two different fields: the Biomedical Metabolomics Facility Leiden, experts in clinical metabolomics and the Natural Products Laboratory,…

The Advisory Board of the IBL consists of five eminent scientists with specialist expertise in complementary disciplines. They all have prominent positions for the field of Biology in the Netherlands outside our own institute.

Publication of Johann Natterer's (1787-1843) word lists of Amazonian languages.

Our facilities cover:

In the Life Science & Technology (LST) degree programme you study the functioning and applications of the living cell: the building block of all plants, humans, animals and micro-organisms. This can be your contribution to a clean and healthy world.

Investigating the intercultural connections that shaped practices of knowledge production in colonial Dutch Brazil.

Pathogenic bacteria are increasingly resistant to today’s antibiotics. Professor Gilles van Wezel seeks new forms of antibiotics in good bacteria that live in the soil.

The oldest university in the Netherlands has produced many well-known scientists. Some of them are known to the wider public; others are perhaps less well known, but their achievements are no less impressive.

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…

Leiden has the oldest botanical garden in the Netherlands, founded in 1590.

PhD defence

PhD defence

A multi-disciplinary approach to past lifestyles and cultural practices

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.

Steering soil microbiomes for better crop quality: the holy grail to improve human health?

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

PhD defence