Plant exudates appeared long time ago in the history line of life in the early Devonian. They are typical saps produced by specialized cells.

Maak een reis door de geschiedenis en de toekomst van het leven op aarde.

De missie van het Plant Sciences onderzoeksprogramma is om bij te dragen aan de duurzame productie van gewassen van hoge kwaliteit, bloemen en hoogwaardige producten met een biologische basis. Dit wordt gerealiseerd door het opdoen van fundamentele kennis over biologische processen omtrent de ontwikkeling…

Voor groep 4/5 basisschool.

In this thesis, the role of plant-mediated soil legacy effects in shaping aboveground plant-insect interactions was investigated.

Biodiversity enables ecosystems to thrive through the synergy of functional differences among organisms. While human well-being strongly depends on biodiversity-driven ecosystem services, human actions are also at the root of current unprecedented biodiversity declines.

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

Plant diversity is essential for us and our planet as it sustains the stability of our ecosystems, provides vital materials and food to us and supports many ecosystem services.

The overall objectives of my thesis are to investigate the dynamics of the sorghum root microbiome and to explore the beneficial effects of the root microbiome on sorghum growth and stress tolerance.

Plant-microbe interaction resulted in different physio/chemical responses by host plant and interacting rhizobacteria.

In light of climate change, it is crucial to determine whether plant species can adapt to future climates to avoid extinction. Plants adapt to various conditions by altering their functional traits, such as leaf size or photosynthetic rate. Some traits appear linked and vary together between species,…

Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Promotor: Prof.dr. P. Hooykaas, Co-promotor: R. Offringa

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

Agrobacterium-mediated transformation (AMT) has abundantly been used for scientific research for identifying valuable traits.

Promotor: G.R. de Snoo, Co-promotor: C.J.M. Muster

This thesis describes how different colours of light affect various aspects of the growth and development of Arabidopsis and tomato plants⁠.

The endophytic microbiota is a community of various microorganisms that reside in plant tissue. These microbes are known to promote plant health and resilience, and their members do not simply exist side by side.

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

In this thesis, I focused on studying the above- and belowground interactions of J. vulgaris from a plant-soil feedback (hereafter, PSF) perspective. I investigated the temporal variation of negative PSF and examined the effects of root-associated bacteria on plant performance and aboveground herbiv…

The plant hormone auxin regulates plant growth and development through polar cell-to-cell transport-generated maxima and minima. PIN FORMED (PIN) auxin efflux carriers determine the direction of this auxin flow through their asymmetric placement on the plasma membrane (PM).

Trigonostemon Blume is a plant genus in the family Euphorbiaceae comprising 59 species.

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.

We showed that constitutive and inducible chemical and morphological defenses against Western flower thrips differ between tomato and chrysanthemum plants.

Salicylic acid (SA) is a plant hormone, which is involved in the defense responses to pathogens and to abiotic stress, and in the regulation of plant growth and development.

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

Promotor: G.R. de Snoo, Co-promotor: H.H. de Iongh, C.J.M. Musters

Een lezing over de drive, dynamiek én dilemma's van onze centrale bank/toezichthouder. Joanne Kellermann zal ingaan op de rol die DNB als centrale bank al 200 jaar vervult in ons land en op de dilemma's waar een toezichthouder mee te maken kan krijgen. Hoe kan er een juiste balans worden gevonden tussen…

Rutger Schimmelpenninck en Ben Knüppe, de curatoren van DSB en beiden alumni van de Universiteit Leiden, delen hun ervaringen over een van de meest spraakmakende faillissementen van deze tijd: de val van DSB.

'Ik ga het waarschijnlijk hebben over wat er de dag ervoor is gebeurd.'

Nout Wellink sprak over de rol van de centrale bank in het huidige roerige financiële klimaat. Daarbij gaat hij ook in op de gewijzigde kapitaaleisen die voor banken gelden.

Prof.dr. J. Memelink

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

Rutsel Martha, voormalig minister van Justitie van de Nederlandse Antillen, voormalig General Council van Interpol en bovendien alumnus van de Universiteit Leiden, sprak over op de positie van Staten en intergouvernementele organisaties (IGO’s) binnen het internationaal financieel recht.

Minister van Financiën Jan Kees de Jager sprak op 6 september over de huidige, roerige Europese ontwikkelingen op monetair en financieel gebied.

Wanneer niet alle monniken gelijk zijn: problemen van internationaal publiekrecht in de geld- en kapitaalmarkt.

Deze lezing was de zesde in de reeks Hazelhoff Guest Lectures.

Jacques Sevat gaf inzicht in de praktische en juridische aspecten van global collateral management: het constante beheer van zekerheden om de risico’s te beperken die een wereldwijd opererende bank als ING dagelijks loopt.

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.

De Leiden Slavery Studies Association (LSSA) is toegewijd aan het bevorderen van een beter begrip van slavernij en post-slavernij in elke periode en elk geografisch gebied.

Wim Mijs, Chief Executive van de Europese Bankenfederatie (EBF) reflecteerde 11 februari 2016 op de vraag 'Een toekomst zonder banken?' tijdens de tiende Hazelhoff Guest Lecture.

Op 11 mei 2016 ontving het Hazelhoff Centre for Financial Law Robert Pickel voor de elfde Hazelhoff Guest Lecture, getiteld ‘The Deadliest Sin of the Financial Crisis’.

Promotor: J.M. Memelink

Plants, are sessile organisms, have developed strategies to adapt to changes in their environment, in part by altering their growth and development.

Between the early thirteenth and early sixteenth centuries CE, the Sultanate of Cairo affected the balances of power elites across and beyond the regions of Egypt, Syria and the Eastern Mediterranean. Modern historiography has for a long time been determined by the idea of this sultanate as a highly…

In een wervelende mix van wetenschap, natuur en kunst brengt de expositie Planten & Planeten beide werelden samen. De expositie is vanaf 7 februari vijf jaar lang te zien in de Oude Sterrewacht in de Hortus botanicus.