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

A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…

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

This book provides the answers, presenting clear insights into the current state of affairs and exploring future prospects.

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

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 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.

Sorghum (Sorghum bicolor) is a major cereal crop that millions of subsistence farmers in Sub-Saharan Africa (SSA) rely on. However, the scourging impact of the root parasitic weed Striga (Striga hermonthica, a.k.a. “witch-weed”) has remained a major constraint hampering the productivity of sorghum in…

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.

This thesis explores how bees and hoverflies are distributed across the Dutch landscape and how ecological and landscape factors shape their occurrence.

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 thesis is about how auxin and AGC kinases regulate male fertility. The main AGC kinases studied in this thesis is PDK1, PDK2 and AGC1.5, AGC1.7.

AI has huge societal and economic potential and is widely used. But it also brings challenges: how do we combine human values with AI, how do we make AI more transparent and understandable, and what can AI and human cognition learn from each other, for example about language learning?

On 14 February, the second student edition of Mediaforum, journal of media and communication law, was festively launched with a symposium in the Academy Building of Leiden University. During the symposium, the student authors, some of them from our own ranks (Roosmarijn Altink, Roosmarijn Niesing and…

On 19 September 2023 Tabitha Speelman successfully defended a doctoral thesis and graduated.

Heloisa’s doctoral research examines classical music performance from a curatorial perspective, reflecting upon and challenging the traditional configuration of performance environments.

The rise of the digital age affects public governance in many ways. Digitalisation and data impact every aspect of public governance and policy. Within Leiden University’s Public Administration institute, based in The Hague -the administrative capital of the Netherlands- our centre seeks to understand…

In the present-day United States, to what degree(s) are far-right men and women similar and/or dissimilar in their motivating factors for engaging in far-right social movement activism?

Although sexual abstinence before marriage is no longer the central message in The Netherlands the affective relationship as a criterion for professionals within criminal justice can be seen as a more contemporary version of marriage.

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You’ve been accepted! Leiden University looks forward to welcoming you as a new student. Your next step is to prepare for your studies. Below you can find some tips to help you get a head start as you embark on your studies at Leiden University.

From 2 to 6 June 2014, Prof. dr. Frank den Hollander has provided 2 lectures during the workshop ‘Recent Models in Random Media’ at the Centre International de Rencontres Mathematique in Marseille (CIRM). This center facilitates workshops for mathematicians throughout the year.

How interest groups, differences in policy issues and institutional differences between countries affect whether public opinion is translated into policy?

Factors affecting galanthamine production in Narcissus

Collaborators and advisors of the Plant BioDynamics Laboratory

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

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.

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,…

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.

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

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?…

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

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…

Our facilities cover:

In this thesis I examine how soil biotic and abiotic characteristics change and interact throughout the course of afforestation and how they subsequently impact tree performance.

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.

One way for governments to conduct foreign policy and promote national interests is through direct outreach and communication with the population of a foreign country. This is called public diplomacy. Historians such as Helmer Helmers and William T. Rossiter have shown that printed media were already…

Leiden has been selected as one of ten cities in the European BiodiverCities project. The aim of the project is to increase the quality of life in these cities, for instance by developing a green infrastructure and enhancing biodiversity. The Municipality of Leiden will work together with Naturalis…

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.